Your message dated Sat, 21 Feb 2026 22:56:13 +0100
with message-id <[email protected]>
and subject line Re: Bug#1128540: eegdev: FTBFS with glibc 2.43 due to ISO C23 
const return types
has caused the Debian Bug report #1128540,
regarding eegdev: FTBFS with glibc 2.43 due to ISO C23 const return types
to be marked as done.

This means that you claim that the problem has been dealt with.
If this is not the case it is now your responsibility to reopen the
Bug report if necessary, and/or fix the problem forthwith.

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-- 
1128540: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1128540
Debian Bug Tracking System
Contact [email protected] with problems
--- Begin Message ---
Source: eegdev
Version: 0.2-12
Severity: important
Tags: ftbfs upstream
Justification: fails to build from source
User: [email protected]
Usertags: glibc-2.43

Dear maintainer(s),

eegdev fails to build from source with glibc 2.43, currently in
experimental. From the build log:

| libtool: compile:  gcc -DHAVE_CONFIG_H -I. -I../config 
-I/usr/include/libusb-1.0 -Wdate-time -D_FORTIFY_SOURCE=2 -fvisibility=hidden 
-Wno-cast-qual -Wno-conversion -Wno-float-equal -Wno-sign-compare -Wno-undef 
-Wno-unused-function -Wno-unused-parameter -Wno-float-conversion 
-Wimplicit-fallthrough -Wno-pedantic -Wno-sign-conversion -Wno-type-limits 
-Wno-unused-const-variable -Wno-unsuffixed-float-constants -Wno-error -g -O2 
-Werror=implicit-function-declaration 
-ffile-prefix-map=/build/reproducible-path/eegdev-0.2=. 
-fstack-protector-strong -fstack-clash-protection -Wformat 
-Werror=format-security -mbranch-protection=standard -O3 -Wall -Wextra -c 
mbsnlen.c  -fPIC -DPIC -o .libs/libgnu_la-mbsnlen.o
| In file included from /usr/include/features.h:539,
|                  from /usr/include/uchar.h:26,
|                  from ./uchar.h:45,
|                  from c32isalpha.c:21:
| ./wchar.h:856:23: error: expected identifier or '(' before '_Generic'
|   856 | _GL_EXTERN_C wchar_t *wmemchr (const wchar_t *__s, wchar_t __wc, 
size_t __n)
|       |                       ^~~~~~~
| In file included from /usr/include/features.h:539,
|                  from /usr/include/uchar.h:26,
|                  from ./uchar.h:45,
|                  from c32width.c:23:
| ./wchar.h:856:23: error: expected identifier or '(' before '_Generic'
|   856 | _GL_EXTERN_C wchar_t *wmemchr (const wchar_t *__s, wchar_t __wc, 
size_t __n)
|       |                       ^~~~~~~
| In file included from /usr/include/features.h:539,
|                  from /usr/include/uchar.h:26,
|                  from ./uchar.h:45,
|                  from c32isalnum.c:21:
| ./wchar.h:856:23: error: expected identifier or '(' before '_Generic'
|   856 | _GL_EXTERN_C wchar_t *wmemchr (const wchar_t *__s, wchar_t __wc, 
size_t __n)
|       |                       ^~~~~~~
| In file included from /usr/include/features.h:539,
|                  from /usr/include/uchar.h:26,
|                  from ./uchar.h:45,
|                  from c32isblank.c:21:
| ./wchar.h:856:23: error: expected identifier or '(' before '_Generic'
|   856 | _GL_EXTERN_C wchar_t *wmemchr (const wchar_t *__s, wchar_t __wc, 
size_t __n)
|       |                       ^~~~~~~
| In file included from /usr/include/features.h:539,
|                  from /usr/include/uchar.h:26,
|                  from ./uchar.h:45,
|                  from c32isxdigit.c:21:
| ./wchar.h:856:23: error: expected identifier or '(' before '_Generic'
|   856 | _GL_EXTERN_C wchar_t *wmemchr (const wchar_t *__s, wchar_t __wc, 
size_t __n)
|       |                       ^~~~~~~
| In file included from /usr/include/features.h:539,
|                  from 
/usr/include/aarch64-linux-gnu/bits/libc-header-start.h:33,
|                  from /usr/include/stdlib.h:26,
|                  from ./stdlib.h:51,
|                  from fd-hook.c:23:
| ./stdlib.h:820:20: error: expected identifier or '(' before '_Generic'
|   820 | _GL_EXTERN_C void *bsearch (const void *__key,
|       |                    ^~~~~~~
| libtool: compile:  gcc -DHAVE_CONFIG_H -I. -I../config 
-I/usr/include/libusb-1.0 -Wdate-time -D_FORTIFY_SOURCE=2 -fvisibility=hidden 
-Wno-cast-qual -Wno-conversion -Wno-float-equal -Wno-sign-compare -Wno-undef 
-Wno-unused-function -Wno-unused-parameter -Wno-float-conversion 
-Wimplicit-fallthrough -Wno-pedantic -Wno-sign-conversion -Wno-type-limits 
-Wno-unused-const-variable -Wno-unsuffixed-float-constants -Wno-error -g -O2 
-Werror=implicit-function-declaration 
-ffile-prefix-map=/build/reproducible-path/eegdev-0.2=. 
-fstack-protector-strong -fstack-clash-protection -Wformat 
-Werror=format-security -mbranch-protection=standard -O3 -Wall -Wextra -c 
sockets.c  -fPIC -DPIC -o .libs/libgnu_la-sockets.o
| In file included from /usr/include/features.h:539,
|                  from /usr/include/uchar.h:26,
|                  from ./uchar.h:45,
|                  from c32isprint.c:21:
| ./wchar.h:856:23: error: expected identifier or '(' before '_Generic'
|   856 | _GL_EXTERN_C wchar_t *wmemchr (const wchar_t *__s, wchar_t __wc, 
size_t __n)
|       |                       ^~~~~~~
| In file included from /usr/include/features.h:539,
|                  from /usr/include/uchar.h:26,
|                  from ./uchar.h:45,
|                  from c32tolower.c:21:
| ./wchar.h:856:23: error: expected identifier or '(' before '_Generic'
|   856 | _GL_EXTERN_C wchar_t *wmemchr (const wchar_t *__s, wchar_t __wc, 
size_t __n)
|       |                       ^~~~~~~
| In file included from /usr/include/features.h:539,
|                  from /usr/include/uchar.h:26,
|                  from ./uchar.h:45,
|                  from c32isgraph.c:21:
| ./wchar.h:856:23: error: expected identifier or '(' before '_Generic'
|   856 | _GL_EXTERN_C wchar_t *wmemchr (const wchar_t *__s, wchar_t __wc, 
size_t __n)
|       |                       ^~~~~~~
| libtool: compile:  gcc -DHAVE_CONFIG_H -I. -I../config 
-I/usr/include/libusb-1.0 -Wdate-time -D_FORTIFY_SOURCE=2 -fvisibility=hidden 
-Wno-cast-qual -Wno-conversion -Wno-float-equal -Wno-sign-compare -Wno-undef 
-Wno-unused-function -Wno-unused-parameter -Wno-float-conversion 
-Wimplicit-fallthrough -Wno-pedantic -Wno-sign-conversion -Wno-type-limits 
-Wno-unused-const-variable -Wno-unsuffixed-float-constants -Wno-error -g -O2 
-Werror=implicit-function-declaration 
-ffile-prefix-map=/build/reproducible-path/eegdev-0.2=. 
-fstack-protector-strong -fstack-clash-protection -Wformat 
-Werror=format-security -mbranch-protection=standard -O3 -Wall -Wextra -c 
time.c  -fPIC -DPIC -o .libs/libgnu_la-time.o
| In file included from /usr/include/features.h:539,
|                  from /usr/include/uchar.h:26,
|                  from ./uchar.h:45,
|                  from c32isspace.c:21:
| ./wchar.h:856:23: error: expected identifier or '(' before '_Generic'
|   856 | _GL_EXTERN_C wchar_t *wmemchr (const wchar_t *__s, wchar_t __wc, 
size_t __n)
|       |                       ^~~~~~~
| In file included from /usr/include/features.h:539,
|                  from /usr/include/uchar.h:26,
|                  from ./uchar.h:45,
|                  from c32islower.c:21:
| ./wchar.h:856:23: error: expected identifier or '(' before '_Generic'
|   856 | _GL_EXTERN_C wchar_t *wmemchr (const wchar_t *__s, wchar_t __wc, 
size_t __n)
|       |                       ^~~~~~~
| In file included from /usr/include/features.h:539,
|                  from /usr/include/locale.h:25,
|                  from ./locale.h:41,
|                  from hard-locale.c:23:
| ./stdlib.h:820:20: error: expected identifier or '(' before '_Generic'
|   820 | _GL_EXTERN_C void *bsearch (const void *__key,
|       |                    ^~~~~~~
| In file included from /usr/include/features.h:539,
|                  from /usr/include/uchar.h:26,
|                  from ./uchar.h:45,
|                  from c32isupper.c:21:
| ./wchar.h:856:23: error: expected identifier or '(' before '_Generic'
|   856 | _GL_EXTERN_C wchar_t *wmemchr (const wchar_t *__s, wchar_t __wc, 
size_t __n)
|       |                       ^~~~~~~
| libtool: compile:  gcc -DHAVE_CONFIG_H -I. -I../config 
-I/usr/include/libusb-1.0 -Wdate-time -D_FORTIFY_SOURCE=2 -fvisibility=hidden 
-Wno-cast-qual -Wno-conversion -Wno-float-equal -Wno-sign-compare -Wno-undef 
-Wno-unused-function -Wno-unused-parameter -Wno-float-conversion 
-Wimplicit-fallthrough -Wno-pedantic -Wno-sign-conversion -Wno-type-limits 
-Wno-unused-const-variable -Wno-unsuffixed-float-constants -Wno-error -g -O2 
-Werror=implicit-function-declaration 
-ffile-prefix-map=/build/reproducible-path/eegdev-0.2=. 
-fstack-protector-strong -fstack-clash-protection -Wformat 
-Werror=format-security -mbranch-protection=standard -O3 -Wall -Wextra -c 
setlocale_null-unlocked.c  -fPIC -DPIC -o 
.libs/libgnu_la-setlocale_null-unlocked.o
| libtool: compile:  gcc -DHAVE_CONFIG_H -I. -I../config 
-I/usr/include/libusb-1.0 -Wdate-time -D_FORTIFY_SOURCE=2 -fvisibility=hidden 
-Wno-cast-qual -Wno-conversion -Wno-float-equal -Wno-sign-compare -Wno-undef 
-Wno-unused-function -Wno-unused-parameter -Wno-float-conversion 
-Wimplicit-fallthrough -Wno-pedantic -Wno-sign-conversion -Wno-type-limits 
-Wno-unused-const-variable -Wno-unsuffixed-float-constants -Wno-error -g -O2 
-Werror=implicit-function-declaration 
-ffile-prefix-map=/build/reproducible-path/eegdev-0.2=. 
-fstack-protector-strong -fstack-clash-protection -Wformat 
-Werror=format-security -mbranch-protection=standard -O3 -Wall -Wextra -c 
mbszero.c  -fPIC -DPIC -o .libs/libgnu_la-mbszero.o
| libtool: compile:  gcc -DHAVE_CONFIG_H -I. -I../config 
-I/usr/include/libusb-1.0 -Wdate-time -D_FORTIFY_SOURCE=2 -fvisibility=hidden 
-Wno-cast-qual -Wno-conversion -Wno-float-equal -Wno-sign-compare -Wno-undef 
-Wno-unused-function -Wno-unused-parameter -Wno-float-conversion 
-Wimplicit-fallthrough -Wno-pedantic -Wno-sign-conversion -Wno-type-limits 
-Wno-unused-const-variable -Wno-unsuffixed-float-constants -Wno-error -g -O2 
-Werror=implicit-function-declaration 
-ffile-prefix-map=/build/reproducible-path/eegdev-0.2=. 
-fstack-protector-strong -fstack-clash-protection -Wformat 
-Werror=format-security -mbranch-protection=standard -O3 -Wall -Wextra -c 
stdlib.c  -fPIC -DPIC -o .libs/libgnu_la-stdlib.o
| In file included from /usr/include/features.h:539,
|                  from /usr/include/uchar.h:26,
|                  from ./uchar.h:45,
|                  from c32iscntrl.c:21:
| ./wchar.h:856:23: error: expected identifier or '(' before '_Generic'
|   856 | _GL_EXTERN_C wchar_t *wmemchr (const wchar_t *__s, wchar_t __wc, 
size_t __n)
|       |                       ^~~~~~~
| libtool: compile:  gcc -DHAVE_CONFIG_H -I. -I../config 
-I/usr/include/libusb-1.0 -Wdate-time -D_FORTIFY_SOURCE=2 -fvisibility=hidden 
-Wno-cast-qual -Wno-conversion -Wno-float-equal -Wno-sign-compare -Wno-undef 
-Wno-unused-function -Wno-unused-parameter -Wno-float-conversion 
-Wimplicit-fallthrough -Wno-pedantic -Wno-sign-conversion -Wno-type-limits 
-Wno-unused-const-variable -Wno-unsuffixed-float-constants -Wno-error -g -O2 
-Werror=implicit-function-declaration 
-ffile-prefix-map=/build/reproducible-path/eegdev-0.2=. 
-fstack-protector-strong -fstack-clash-protection -Wformat 
-Werror=format-security -mbranch-protection=standard -O3 -Wall -Wextra -c 
sys_socket.c  -fPIC -DPIC -o .libs/libgnu_la-sys_socket.o
| In file included from /usr/include/features.h:539,
|                  from /usr/include/uchar.h:26,
|                  from ./uchar.h:45,
|                  from c32ispunct.c:21:
| ./wchar.h:856:23: error: expected identifier or '(' before '_Generic'
|   856 | _GL_EXTERN_C wchar_t *wmemchr (const wchar_t *__s, wchar_t __wc, 
size_t __n)
|       |                       ^~~~~~~
| In file included from /usr/include/features.h:539,
|                  from ./wchar.h:69,
|                  from btowc.c:21:
| ./wchar.h:856:23: error: expected identifier or '(' before '_Generic'
|   856 | _GL_EXTERN_C wchar_t *wmemchr (const wchar_t *__s, wchar_t __wc, 
size_t __n)
|       |                       ^~~~~~~
| make[4]: *** [Makefile:2812: libgnu_la-fd-hook.lo] Error 1
| make[4]: *** Waiting for unfinished jobs....
| In file included from /usr/include/features.h:539,
|                  from /usr/include/uchar.h:26,
|                  from ./uchar.h:45,
|                  from c32isdigit.c:21:
| ./wchar.h:856:23: error: expected identifier or '(' before '_Generic'
|   856 | _GL_EXTERN_C wchar_t *wmemchr (const wchar_t *__s, wchar_t __wc, 
size_t __n)
|       |                       ^~~~~~~
| make[4]: *** [Makefile:2791: libgnu_la-c32width.lo] Error 1
| libtool: compile:  gcc -DHAVE_CONFIG_H -I. -I../config 
-I/usr/include/libusb-1.0 -Wdate-time -D_FORTIFY_SOURCE=2 -fvisibility=hidden 
-Wno-cast-qual -Wno-conversion -Wno-float-equal -Wno-sign-compare -Wno-undef 
-Wno-unused-function -Wno-unused-parameter -Wno-float-conversion 
-Wimplicit-fallthrough -Wno-pedantic -Wno-sign-conversion -Wno-type-limits 
-Wno-unused-const-variable -Wno-unsuffixed-float-constants -Wno-error -g -O2 
-Werror=implicit-function-declaration 
-ffile-prefix-map=/build/reproducible-path/eegdev-0.2=. 
-fstack-protector-strong -fstack-clash-protection -Wformat 
-Werror=format-security -mbranch-protection=standard -O3 -Wall -Wextra -c 
glthread/threadlib.c  -fPIC -DPIC -o glthread/.libs/libgnu_la-threadlib.o
| libtool: compile:  gcc -DHAVE_CONFIG_H -I. -I../config 
-I/usr/include/libusb-1.0 -Wdate-time -D_FORTIFY_SOURCE=2 -fvisibility=hidden 
-Wno-cast-qual -Wno-conversion -Wno-float-equal -Wno-sign-compare -Wno-undef 
-Wno-unused-function -Wno-unused-parameter -Wno-float-conversion 
-Wimplicit-fallthrough -Wno-pedantic -Wno-sign-conversion -Wno-type-limits 
-Wno-unused-const-variable -Wno-unsuffixed-float-constants -Wno-error -g -O2 
-Werror=implicit-function-declaration 
-ffile-prefix-map=/build/reproducible-path/eegdev-0.2=. 
-fstack-protector-strong -fstack-clash-protection -Wformat 
-Werror=format-security -mbranch-protection=standard -O3 -Wall -Wextra -c 
unistd.c  -fPIC -DPIC -o .libs/libgnu_la-unistd.o
| make[4]: *** [Makefile:2707: libgnu_la-c32isalpha.lo] Error 1
| In file included from /usr/include/features.h:539,
|                  from 
/usr/include/aarch64-linux-gnu/bits/libc-header-start.h:33,
|                  from /usr/include/stdio.h:28,
|                  from ./stdio.h:55,
|                  from localcharset.c:26:
| ./stdlib.h:820:20: error: expected identifier or '(' before '_Generic'
|   820 | _GL_EXTERN_C void *bsearch (const void *__key,
|       |                    ^~~~~~~
| make[4]: *** [Makefile:2714: libgnu_la-c32isblank.lo] Error 1
| make[4]: *** [Makefile:2700: libgnu_la-c32isalnum.lo] Error 1
| libtool: compile:  gcc -DHAVE_CONFIG_H -I. -I../config 
-I/usr/include/libusb-1.0 -Wdate-time -D_FORTIFY_SOURCE=2 -fvisibility=hidden 
-Wno-cast-qual -Wno-conversion -Wno-float-equal -Wno-sign-compare -Wno-undef 
-Wno-unused-function -Wno-unused-parameter -Wno-float-conversion 
-Wimplicit-fallthrough -Wno-pedantic -Wno-sign-conversion -Wno-type-limits 
-Wno-unused-const-variable -Wno-unsuffixed-float-constants -Wno-error -g -O2 
-Werror=implicit-function-declaration 
-ffile-prefix-map=/build/reproducible-path/eegdev-0.2=. 
-fstack-protector-strong -fstack-clash-protection -Wformat 
-Werror=format-security -mbranch-protection=standard -O3 -Wall -Wextra -c 
wctype-h.c  -fPIC -DPIC -o .libs/libgnu_la-wctype-h.o
| libtool: compile:  gcc -DHAVE_CONFIG_H -I. -I../config 
-I/usr/include/libusb-1.0 -Wdate-time -D_FORTIFY_SOURCE=2 -fvisibility=hidden 
-Wno-cast-qual -Wno-conversion -Wno-float-equal -Wno-sign-compare -Wno-undef 
-Wno-unused-function -Wno-unused-parameter -Wno-float-conversion 
-Wimplicit-fallthrough -Wno-pedantic -Wno-sign-conversion -Wno-type-limits 
-Wno-unused-const-variable -Wno-unsuffixed-float-constants -Wno-error -g -O2 
-Werror=implicit-function-declaration 
-ffile-prefix-map=/build/reproducible-path/eegdev-0.2=. 
-fstack-protector-strong -fstack-clash-protection -Wformat 
-Werror=format-security -mbranch-protection=standard -O3 -Wall -Wextra -c 
vsnzprintf.c  -fPIC -DPIC -o .libs/libgnu_la-vsnzprintf.o
| make[4]: *** [Makefile:2777: libgnu_la-c32isxdigit.lo] Error 1
| make[4]: *** [Makefile:2784: libgnu_la-c32tolower.lo] Error 1
| make[4]: *** [Makefile:2903: libgnu_la-hard-locale.lo] Error 1
| libtool: compile:  gcc -DHAVE_CONFIG_H -I. -I../config 
-I/usr/include/libusb-1.0 -Wdate-time -D_FORTIFY_SOURCE=2 -fvisibility=hidden 
-Wno-cast-qual -Wno-conversion -Wno-float-equal -Wno-sign-compare -Wno-undef 
-Wno-unused-function -Wno-unused-parameter -Wno-float-conversion 
-Wimplicit-fallthrough -Wno-pedantic -Wno-sign-conversion -Wno-type-limits 
-Wno-unused-const-variable -Wno-unsuffixed-float-constants -Wno-error -g -O2 
-Werror=implicit-function-declaration 
-ffile-prefix-map=/build/reproducible-path/eegdev-0.2=. 
-fstack-protector-strong -fstack-clash-protection -Wformat 
-Werror=format-security -mbranch-protection=standard -O3 -Wall -Wextra -c 
asnprintf.c  -fPIC -DPIC -o .libs/libgnu_la-asnprintf.o
| make[4]: *** [Makefile:2735: libgnu_la-c32isgraph.lo] Error 1
| make[4]: *** [Makefile:2742: libgnu_la-c32islower.lo] Error 1
| make[4]: *** [Makefile:2770: libgnu_la-c32isupper.lo] Error 1
| make[4]: *** [Makefile:2763: libgnu_la-c32isspace.lo] Error 1
| make[4]: *** [Makefile:2749: libgnu_la-c32isprint.lo] Error 1
| make[4]: *** [Makefile:2721: libgnu_la-c32iscntrl.lo] Error 1
| In file included from /usr/include/features.h:539,
|                  from /usr/include/uchar.h:26,
|                  from ./uchar.h:45,
|                  from mbrtoc32.c:22:
| ./wchar.h:856:23: error: expected identifier or '(' before '_Generic'
|   856 | _GL_EXTERN_C wchar_t *wmemchr (const wchar_t *__s, wchar_t __wc, 
size_t __n)
|       |                       ^~~~~~~
| make[4]: *** [Makefile:2756: libgnu_la-c32ispunct.lo] Error 1
| libtool: compile:  gcc -DHAVE_CONFIG_H -I. -I../config 
-I/usr/include/libusb-1.0 -Wdate-time -D_FORTIFY_SOURCE=2 -fvisibility=hidden 
-Wno-cast-qual -Wno-conversion -Wno-float-equal -Wno-sign-compare -Wno-undef 
-Wno-unused-function -Wno-unused-parameter -Wno-float-conversion 
-Wimplicit-fallthrough -Wno-pedantic -Wno-sign-conversion -Wno-type-limits 
-Wno-unused-const-variable -Wno-unsuffixed-float-constants -Wno-error -g -O2 
-Werror=implicit-function-declaration 
-ffile-prefix-map=/build/reproducible-path/eegdev-0.2=. 
-fstack-protector-strong -fstack-clash-protection -Wformat 
-Werror=format-security -mbranch-protection=standard -O3 -Wall -Wextra -c 
printf-args.c  -fPIC -DPIC -o .libs/libgnu_la-printf-args.o
| make[4]: *** [Makefile:2728: libgnu_la-c32isdigit.lo] Error 1
| In file included from /usr/include/features.h:539,
|                  from /usr/include/errno.h:25,
|                  from setlocale_null.c:24:
| ./stdlib.h:820:20: error: expected identifier or '(' before '_Generic'
|   820 | _GL_EXTERN_C void *bsearch (const void *__key,
|       |                    ^~~~~~~
| libtool: compile:  gcc -DHAVE_CONFIG_H -I. -I../config 
-I/usr/include/libusb-1.0 -Wdate-time -D_FORTIFY_SOURCE=2 -fvisibility=hidden 
-Wno-cast-qual -Wno-conversion -Wno-float-equal -Wno-sign-compare -Wno-undef 
-Wno-unused-function -Wno-unused-parameter -Wno-float-conversion 
-Wimplicit-fallthrough -Wno-pedantic -Wno-sign-conversion -Wno-type-limits 
-Wno-unused-const-variable -Wno-unsuffixed-float-constants -Wno-error -g -O2 
-Werror=implicit-function-declaration 
-ffile-prefix-map=/build/reproducible-path/eegdev-0.2=. 
-fstack-protector-strong -fstack-clash-protection -Wformat 
-Werror=format-security -mbranch-protection=standard -O3 -Wall -Wextra -c 
malloc/dynarray_at_failure.c  -fPIC -DPIC -o 
malloc/.libs/libgnu_la-dynarray_at_failure.o
| In file included from /usr/include/features.h:539,
|                  from 
/usr/include/aarch64-linux-gnu/bits/libc-header-start.h:33,
|                  from /usr/include/limits.h:26,
|                  from /usr/lib/gcc/aarch64-linux-gnu/15/include/limits.h:210,
|                  from ./limits.h:31,
|                  from /usr/lib/gcc/aarch64-linux-gnu/15/include/syslimits.h:9,
|                  from /usr/lib/gcc/aarch64-linux-gnu/15/include/limits.h:34,
|                  from ./limits.h:41,
|                  from mbchar.c:21:
| ./wchar.h:856:23: error: expected identifier or '(' before '_Generic'
|   856 | _GL_EXTERN_C wchar_t *wmemchr (const wchar_t *__s, wchar_t __wc, 
size_t __n)
|       |                       ^~~~~~~
| In file included from /usr/include/features.h:539,
|                  from ./wchar.h:69,
|                  from mbrtowc.c:21:
| ./wchar.h:856:23: error: expected identifier or '(' before '_Generic'
|   856 | _GL_EXTERN_C wchar_t *wmemchr (const wchar_t *__s, wchar_t __wc, 
size_t __n)
|       |                       ^~~~~~~
| make[4]: *** [Makefile:2966: libgnu_la-localcharset.lo] Error 1
| ./stdlib.h:820:20: error: expected identifier or '(' before '_Generic'
|   820 | _GL_EXTERN_C void *bsearch (const void *__key,
|       |                    ^~~~~~~
| libtool: compile:  gcc -DHAVE_CONFIG_H -I. -I../config 
-I/usr/include/libusb-1.0 -Wdate-time -D_FORTIFY_SOURCE=2 -fvisibility=hidden 
-Wno-cast-qual -Wno-conversion -Wno-float-equal -Wno-sign-compare -Wno-undef 
-Wno-unused-function -Wno-unused-parameter -Wno-float-conversion 
-Wimplicit-fallthrough -Wno-pedantic -Wno-sign-conversion -Wno-type-limits 
-Wno-unused-const-variable -Wno-unsuffixed-float-constants -Wno-error -g -O2 
-Werror=implicit-function-declaration 
-ffile-prefix-map=/build/reproducible-path/eegdev-0.2=. 
-fstack-protector-strong -fstack-clash-protection -Wformat 
-Werror=format-security -mbranch-protection=standard -O3 -Wall -Wextra -c 
printf-parse.c  -fPIC -DPIC -o .libs/libgnu_la-printf-parse.o
| In file included from /usr/include/features.h:539,
|                  from 
/usr/include/aarch64-linux-gnu/bits/libc-header-start.h:33,
|                  from /usr/include/string.h:26,
|                  from ./string.h:41,
|                  from mbsnlen.c:21:
| ./stdlib.h:820:20: error: expected identifier or '(' before '_Generic'
|   820 | _GL_EXTERN_C void *bsearch (const void *__key,
|       |                    ^~~~~~~
| In file included from /usr/include/features.h:539,
|                  from /usr/include/assert.h:35,
|                  from mbiterf.h:82,
|                  from mbiterf.c:21:
| ./wchar.h:856:23: error: expected identifier or '(' before '_Generic'
|   856 | _GL_EXTERN_C wchar_t *wmemchr (const wchar_t *__s, wchar_t __wc, 
size_t __n)
|       |                       ^~~~~~~
| In file included from /usr/include/features.h:539,
|                  from /usr/include/nl_types.h:21,
|                  from /usr/include/langinfo.h:23,
|                  from ./langinfo.h:32,
|                  from nl_langinfo.c:21:
| ./stdlib.h:820:20: error: expected identifier or '(' before '_Generic'
|   820 | _GL_EXTERN_C void *bsearch (const void *__key,
|       |                    ^~~~~~~
| libtool: compile:  gcc -DHAVE_CONFIG_H -I. -I../config 
-I/usr/include/libusb-1.0 -Wdate-time -D_FORTIFY_SOURCE=2 -fvisibility=hidden 
-Wno-cast-qual -Wno-conversion -Wno-float-equal -Wno-sign-compare -Wno-undef 
-Wno-unused-function -Wno-unused-parameter -Wno-float-conversion 
-Wimplicit-fallthrough -Wno-pedantic -Wno-sign-conversion -Wno-type-limits 
-Wno-unused-const-variable -Wno-unsuffixed-float-constants -Wno-error -g -O2 
-Werror=implicit-function-declaration 
-ffile-prefix-map=/build/reproducible-path/eegdev-0.2=. 
-fstack-protector-strong -fstack-clash-protection -Wformat 
-Werror=format-security -mbranch-protection=standard -O3 -Wall -Wextra -c 
vasnprintf.c  -fPIC -DPIC -o .libs/libgnu_la-vasnprintf.o
| libtool: compile:  gcc -DHAVE_CONFIG_H -I. -I../config 
-I/usr/include/libusb-1.0 -Wdate-time -D_FORTIFY_SOURCE=2 -fvisibility=hidden 
-Wno-cast-qual -Wno-conversion -Wno-float-equal -Wno-sign-compare -Wno-undef 
-Wno-unused-function -Wno-unused-parameter -Wno-float-conversion 
-Wimplicit-fallthrough -Wno-pedantic -Wno-sign-conversion -Wno-type-limits 
-Wno-unused-const-variable -Wno-unsuffixed-float-constants -Wno-error -g -O2 
-Werror=implicit-function-declaration 
-ffile-prefix-map=/build/reproducible-path/eegdev-0.2=. 
-fstack-protector-strong -fstack-clash-protection -Wformat 
-Werror=format-security -mbranch-protection=standard -O3 -Wall -Wextra -c 
xsize.c  -fPIC -DPIC -o .libs/libgnu_la-xsize.o
| ./stdlib.h:820:20: error: expected identifier or '(' before '_Generic'
|   820 | _GL_EXTERN_C void *bsearch (const void *__key,
|       |                    ^~~~~~~
| libtool: compile:  gcc -DHAVE_CONFIG_H -I. -I../config 
-I/usr/include/libusb-1.0 -Wdate-time -D_FORTIFY_SOURCE=2 -fvisibility=hidden 
-Wno-cast-qual -Wno-conversion -Wno-float-equal -Wno-sign-compare -Wno-undef 
-Wno-unused-function -Wno-unused-parameter -Wno-float-conversion 
-Wimplicit-fallthrough -Wno-pedantic -Wno-sign-conversion -Wno-type-limits 
-Wno-unused-const-variable -Wno-unsuffixed-float-constants -Wno-error -g -O2 
-Werror=implicit-function-declaration 
-ffile-prefix-map=/build/reproducible-path/eegdev-0.2=. 
-fstack-protector-strong -fstack-clash-protection -Wformat 
-Werror=format-security -mbranch-protection=standard -O3 -Wall -Wextra -c 
malloc/dynarray_resize.c  -fPIC -DPIC -o 
malloc/.libs/libgnu_la-dynarray_resize.o
| In file included from /usr/include/features.h:539,
|                  from 
/usr/include/aarch64-linux-gnu/bits/libc-header-start.h:33,
|                  from /usr/include/stdlib.h:26,
|                  from ./stdlib.h:51,
|                  from stdlib.c:21:
| ./stdlib.h:820:20: error: expected identifier or '(' before '_Generic'
|   820 | _GL_EXTERN_C void *bsearch (const void *__key,
|       |                    ^~~~~~~
| make[4]: *** [Makefile:3008: libgnu_la-mbrtowc.lo] Error 1
| In file included from /usr/include/features.h:539,
|                  from /usr/include/time.h:25,
|                  from ./time.h:54,
|                  from time.c:22:
| ./stdlib.h:820:20: error: expected identifier or '(' before '_Generic'
|   820 | _GL_EXTERN_C void *bsearch (const void *__key,
|       |                    ^~~~~~~
| libtool: compile:  gcc -DHAVE_CONFIG_H -I. -I../config 
-I/usr/include/libusb-1.0 -Wdate-time -D_FORTIFY_SOURCE=2 -fvisibility=hidden 
-Wno-cast-qual -Wno-conversion -Wno-float-equal -Wno-sign-compare -Wno-undef 
-Wno-unused-function -Wno-unused-parameter -Wno-float-conversion 
-Wimplicit-fallthrough -Wno-pedantic -Wno-sign-conversion -Wno-type-limits 
-Wno-unused-const-variable -Wno-unsuffixed-float-constants -Wno-error -g -O2 
-Werror=implicit-function-declaration 
-ffile-prefix-map=/build/reproducible-path/eegdev-0.2=. 
-fstack-protector-strong -fstack-clash-protection -Wformat 
-Werror=format-security -mbranch-protection=standard -O3 -Wall -Wextra -c 
glthread/lock.c  -fPIC -DPIC -o glthread/.libs/libgnu_la-lock.o
| libtool: compile:  gcc -DHAVE_CONFIG_H -I. -I../config 
-I/usr/include/libusb-1.0 -Wdate-time -D_FORTIFY_SOURCE=2 -fvisibility=hidden 
-Wno-cast-qual -Wno-conversion -Wno-float-equal -Wno-sign-compare -Wno-undef 
-Wno-unused-function -Wno-unused-parameter -Wno-float-conversion 
-Wimplicit-fallthrough -Wno-pedantic -Wno-sign-conversion -Wno-type-limits 
-Wno-unused-const-variable -Wno-unsuffixed-float-constants -Wno-error -g -O2 
-Werror=implicit-function-declaration 
-ffile-prefix-map=/build/reproducible-path/eegdev-0.2=. 
-fstack-protector-strong -fstack-clash-protection -Wformat 
-Werror=format-security -mbranch-protection=standard -O3 -Wall -Wextra -c 
unictype/ctype_blank.c  -fPIC -DPIC -o unictype/.libs/libgnu_la-ctype_blank.o
| libtool: compile:  gcc -DHAVE_CONFIG_H -I. -I../config 
-I/usr/include/libusb-1.0 -Wdate-time -D_FORTIFY_SOURCE=2 -fvisibility=hidden 
-Wno-cast-qual -Wno-conversion -Wno-float-equal -Wno-sign-compare -Wno-undef 
-Wno-unused-function -Wno-unused-parameter -Wno-float-conversion 
-Wimplicit-fallthrough -Wno-pedantic -Wno-sign-conversion -Wno-type-limits 
-Wno-unused-const-variable -Wno-unsuffixed-float-constants -Wno-error -g -O2 
-Werror=implicit-function-declaration 
-ffile-prefix-map=/build/reproducible-path/eegdev-0.2=. 
-fstack-protector-strong -fstack-clash-protection -Wformat 
-Werror=format-security -mbranch-protection=standard -O3 -Wall -Wextra -c 
malloc/dynarray_emplace_enlarge.c  -fPIC -DPIC -o 
malloc/.libs/libgnu_la-dynarray_emplace_enlarge.o
| libtool: compile:  gcc -DHAVE_CONFIG_H -I. -I../config 
-I/usr/include/libusb-1.0 -Wdate-time -D_FORTIFY_SOURCE=2 -fvisibility=hidden 
-Wno-cast-qual -Wno-conversion -Wno-float-equal -Wno-sign-compare -Wno-undef 
-Wno-unused-function -Wno-unused-parameter -Wno-float-conversion 
-Wimplicit-fallthrough -Wno-pedantic -Wno-sign-conversion -Wno-type-limits 
-Wno-unused-const-variable -Wno-unsuffixed-float-constants -Wno-error -g -O2 
-Werror=implicit-function-declaration 
-ffile-prefix-map=/build/reproducible-path/eegdev-0.2=. 
-fstack-protector-strong -fstack-clash-protection -Wformat 
-Werror=format-security -mbranch-protection=standard -O3 -Wall -Wextra -c 
glthread/once.c  -fPIC -DPIC -o glthread/.libs/libgnu_la-once.o
| make[4]: *** [Makefile:3099: libgnu_la-setlocale_null.lo] Error 1
| make[4]: *** [Makefile:2679: libgnu_la-btowc.lo] Error 1
| In file included from /usr/include/features.h:539,
|                  from ./wchar.h:69,
|                  from mbszero.c:23:
| ./wchar.h:856:23: error: expected identifier or '(' before '_Generic'
|   856 | _GL_EXTERN_C wchar_t *wmemchr (const wchar_t *__s, wchar_t __wc, 
size_t __n)
|       |                       ^~~~~~~
| make[4]: *** [Makefile:2987: libgnu_la-mbchar.lo] Error 1
| libtool: compile:  gcc -DHAVE_CONFIG_H -I. -I../config 
-I/usr/include/libusb-1.0 -Wdate-time -D_FORTIFY_SOURCE=2 -fvisibility=hidden 
-Wno-cast-qual -Wno-conversion -Wno-float-equal -Wno-sign-compare -Wno-undef 
-Wno-unused-function -Wno-unused-parameter -Wno-float-conversion 
-Wimplicit-fallthrough -Wno-pedantic -Wno-sign-conversion -Wno-type-limits 
-Wno-unused-const-variable -Wno-unsuffixed-float-constants -Wno-error -g -O2 
-Werror=implicit-function-declaration 
-ffile-prefix-map=/build/reproducible-path/eegdev-0.2=. 
-fstack-protector-strong -fstack-clash-protection -Wformat 
-Werror=format-security -mbranch-protection=standard -O3 -Wall -Wextra -c 
malloc/dynarray_resize_clear.c  -fPIC -DPIC -o 
malloc/.libs/libgnu_la-dynarray_resize_clear.o
| libtool: compile:  gcc -DHAVE_CONFIG_H -I. -I../config 
-I/usr/include/libusb-1.0 -Wdate-time -D_FORTIFY_SOURCE=2 -fvisibility=hidden 
-Wno-cast-qual -Wno-conversion -Wno-float-equal -Wno-sign-compare -Wno-undef 
-Wno-unused-function -Wno-unused-parameter -Wno-float-conversion 
-Wimplicit-fallthrough -Wno-pedantic -Wno-sign-conversion -Wno-type-limits 
-Wno-unused-const-variable -Wno-unsuffixed-float-constants -Wno-error -g -O2 
-Werror=implicit-function-declaration 
-ffile-prefix-map=/build/reproducible-path/eegdev-0.2=. 
-fstack-protector-strong -fstack-clash-protection -Wformat 
-Werror=format-security -mbranch-protection=standard -O3 -Wall -Wextra -c 
unictype/ctype_alpha.c  -fPIC -DPIC -o unictype/.libs/libgnu_la-ctype_alpha.o
| ./wchar.h:856:23: error: expected identifier or '(' before '_Generic'
|   856 | _GL_EXTERN_C wchar_t *wmemchr (const wchar_t *__s, wchar_t __wc, 
size_t __n)
|       |                       ^~~~~~~
| libtool: compile:  gcc -DHAVE_CONFIG_H -I. -I../config 
-I/usr/include/libusb-1.0 -Wdate-time -D_FORTIFY_SOURCE=2 -fvisibility=hidden 
-Wno-cast-qual -Wno-conversion -Wno-float-equal -Wno-sign-compare -Wno-undef 
-Wno-unused-function -Wno-unused-parameter -Wno-float-conversion 
-Wimplicit-fallthrough -Wno-pedantic -Wno-sign-conversion -Wno-type-limits 
-Wno-unused-const-variable -Wno-unsuffixed-float-constants -Wno-error -g -O2 
-Werror=implicit-function-declaration 
-ffile-prefix-map=/build/reproducible-path/eegdev-0.2=. 
-fstack-protector-strong -fstack-clash-protection -Wformat 
-Werror=format-security -mbranch-protection=standard -O3 -Wall -Wextra -c 
unictype/ctype_xdigit.c  -fPIC -DPIC -o unictype/.libs/libgnu_la-ctype_xdigit.o
| libtool: compile:  gcc -DHAVE_CONFIG_H -I. -I../config 
-I/usr/include/libusb-1.0 -Wdate-time -D_FORTIFY_SOURCE=2 -fvisibility=hidden 
-Wno-cast-qual -Wno-conversion -Wno-float-equal -Wno-sign-compare -Wno-undef 
-Wno-unused-function -Wno-unused-parameter -Wno-float-conversion 
-Wimplicit-fallthrough -Wno-pedantic -Wno-sign-conversion -Wno-type-limits 
-Wno-unused-const-variable -Wno-unsuffixed-float-constants -Wno-error -g -O2 
-Werror=implicit-function-declaration 
-ffile-prefix-map=/build/reproducible-path/eegdev-0.2=. 
-fstack-protector-strong -fstack-clash-protection -Wformat 
-Werror=format-security -mbranch-protection=standard -O3 -Wall -Wextra -c 
malloc/dynarray_finalize.c  -fPIC -DPIC -o 
malloc/.libs/libgnu_la-dynarray_finalize.o
| libtool: compile:  gcc -DHAVE_CONFIG_H -I. -I../config 
-I/usr/include/libusb-1.0 -Wdate-time -D_FORTIFY_SOURCE=2 -fvisibility=hidden 
-Wno-cast-qual -Wno-conversion -Wno-float-equal -Wno-sign-compare -Wno-undef 
-Wno-unused-function -Wno-unused-parameter -Wno-float-conversion 
-Wimplicit-fallthrough -Wno-pedantic -Wno-sign-conversion -Wno-type-limits 
-Wno-unused-const-variable -Wno-unsuffixed-float-constants -Wno-error -g -O2 
-Werror=implicit-function-declaration 
-ffile-prefix-map=/build/reproducible-path/eegdev-0.2=. 
-fstack-protector-strong -fstack-clash-protection -Wformat 
-Werror=format-security -mbranch-protection=standard -O3 -Wall -Wextra -c 
unictype/ctype_punct.c  -fPIC -DPIC -o unictype/.libs/libgnu_la-ctype_punct.o
| libtool: compile:  gcc -DHAVE_CONFIG_H -I. -I../config 
-I/usr/include/libusb-1.0 -Wdate-time -D_FORTIFY_SOURCE=2 -fvisibility=hidden 
-Wno-cast-qual -Wno-conversion -Wno-float-equal -Wno-sign-compare -Wno-undef 
-Wno-unused-function -Wno-unused-parameter -Wno-float-conversion 
-Wimplicit-fallthrough -Wno-pedantic -Wno-sign-conversion -Wno-type-limits 
-Wno-unused-const-variable -Wno-unsuffixed-float-constants -Wno-error -g -O2 
-Werror=implicit-function-declaration 
-ffile-prefix-map=/build/reproducible-path/eegdev-0.2=. 
-fstack-protector-strong -fstack-clash-protection -Wformat 
-Werror=format-security -mbranch-protection=standard -O3 -Wall -Wextra -c 
unictype/ctype_lower.c  -fPIC -DPIC -o unictype/.libs/libgnu_la-ctype_lower.o
| make[4]: *** [Makefile:3169: libgnu_la-stdlib.lo] Error 1
| make[4]: *** [Makefile:2994: libgnu_la-mbiterf.lo] Error 1
| libtool: compile:  gcc -DHAVE_CONFIG_H -I. -I../config 
-I/usr/include/libusb-1.0 -Wdate-time -D_FORTIFY_SOURCE=2 -fvisibility=hidden 
-Wno-cast-qual -Wno-conversion -Wno-float-equal -Wno-sign-compare -Wno-undef 
-Wno-unused-function -Wno-unused-parameter -Wno-float-conversion 
-Wimplicit-fallthrough -Wno-pedantic -Wno-sign-conversion -Wno-type-limits 
-Wno-unused-const-variable -Wno-unsuffixed-float-constants -Wno-error -g -O2 
-Werror=implicit-function-declaration 
-ffile-prefix-map=/build/reproducible-path/eegdev-0.2=. 
-fstack-protector-strong -fstack-clash-protection -Wformat 
-Werror=format-security -mbranch-protection=standard -O3 -Wall -Wextra -c 
unictype/ctype_digit.c  -fPIC -DPIC -o unictype/.libs/libgnu_la-ctype_digit.o
| make[4]: *** [Makefile:3197: libgnu_la-time.lo] Error 1
| make[4]: *** [Makefile:3064: libgnu_la-nl_langinfo.lo] Error 1
| libtool: compile:  gcc -DHAVE_CONFIG_H -I. -I../config 
-I/usr/include/libusb-1.0 -Wdate-time -D_FORTIFY_SOURCE=2 -fvisibility=hidden 
-Wno-cast-qual -Wno-conversion -Wno-float-equal -Wno-sign-compare -Wno-undef 
-Wno-unused-function -Wno-unused-parameter -Wno-float-conversion 
-Wimplicit-fallthrough -Wno-pedantic -Wno-sign-conversion -Wno-type-limits 
-Wno-unused-const-variable -Wno-unsuffixed-float-constants -Wno-error -g -O2 
-Werror=implicit-function-declaration 
-ffile-prefix-map=/build/reproducible-path/eegdev-0.2=. 
-fstack-protector-strong -fstack-clash-protection -Wformat 
-Werror=format-security -mbranch-protection=standard -O3 -Wall -Wextra -c 
unictype/ctype_alnum.c  -fPIC -DPIC -o unictype/.libs/libgnu_la-ctype_alnum.o
| libtool: compile:  gcc -DHAVE_CONFIG_H -I. -I../config 
-I/usr/include/libusb-1.0 -Wdate-time -D_FORTIFY_SOURCE=2 -fvisibility=hidden 
-Wno-cast-qual -Wno-conversion -Wno-float-equal -Wno-sign-compare -Wno-undef 
-Wno-unused-function -Wno-unused-parameter -Wno-float-conversion 
-Wimplicit-fallthrough -Wno-pedantic -Wno-sign-conversion -Wno-type-limits 
-Wno-unused-const-variable -Wno-unsuffixed-float-constants -Wno-error -g -O2 
-Werror=implicit-function-declaration 
-ffile-prefix-map=/build/reproducible-path/eegdev-0.2=. 
-fstack-protector-strong -fstack-clash-protection -Wformat 
-Werror=format-security -mbranch-protection=standard -O3 -Wall -Wextra -c 
unicase/tolower.c  -fPIC -DPIC -o unicase/.libs/libgnu_la-tolower.o
| libtool: compile:  gcc -DHAVE_CONFIG_H -I. -I../config 
-I/usr/include/libusb-1.0 -Wdate-time -D_FORTIFY_SOURCE=2 -fvisibility=hidden 
-Wno-cast-qual -Wno-conversion -Wno-float-equal -Wno-sign-compare -Wno-undef 
-Wno-unused-function -Wno-unused-parameter -Wno-float-conversion 
-Wimplicit-fallthrough -Wno-pedantic -Wno-sign-conversion -Wno-type-limits 
-Wno-unused-const-variable -Wno-unsuffixed-float-constants -Wno-error -g -O2 
-Werror=implicit-function-declaration 
-ffile-prefix-map=/build/reproducible-path/eegdev-0.2=. 
-fstack-protector-strong -fstack-clash-protection -Wformat 
-Werror=format-security -mbranch-protection=standard -O3 -Wall -Wextra -c 
uniwidth/width.c  -fPIC -DPIC -o uniwidth/.libs/libgnu_la-width.o
| libtool: compile:  gcc -DHAVE_CONFIG_H -I. -I../config 
-I/usr/include/libusb-1.0 -Wdate-time -D_FORTIFY_SOURCE=2 -fvisibility=hidden 
-Wno-cast-qual -Wno-conversion -Wno-float-equal -Wno-sign-compare -Wno-undef 
-Wno-unused-function -Wno-unused-parameter -Wno-float-conversion 
-Wimplicit-fallthrough -Wno-pedantic -Wno-sign-conversion -Wno-type-limits 
-Wno-unused-const-variable -Wno-unsuffixed-float-constants -Wno-error -g -O2 
-Werror=implicit-function-declaration 
-ffile-prefix-map=/build/reproducible-path/eegdev-0.2=. 
-fstack-protector-strong -fstack-clash-protection -Wformat 
-Werror=format-security -mbranch-protection=standard -O3 -Wall -Wextra -c 
unictype/ctype_graph.c  -fPIC -DPIC -o unictype/.libs/libgnu_la-ctype_graph.o
| make[4]: *** [Makefile:3029: libgnu_la-mbszero.lo] Error 1
| libtool: compile:  gcc -DHAVE_CONFIG_H -I. -I../config 
-I/usr/include/libusb-1.0 -Wdate-time -D_FORTIFY_SOURCE=2 -fvisibility=hidden 
-Wno-cast-qual -Wno-conversion -Wno-float-equal -Wno-sign-compare -Wno-undef 
-Wno-unused-function -Wno-unused-parameter -Wno-float-conversion 
-Wimplicit-fallthrough -Wno-pedantic -Wno-sign-conversion -Wno-type-limits 
-Wno-unused-const-variable -Wno-unsuffixed-float-constants -Wno-error -g -O2 
-Werror=implicit-function-declaration 
-ffile-prefix-map=/build/reproducible-path/eegdev-0.2=. 
-fstack-protector-strong -fstack-clash-protection -Wformat 
-Werror=format-security -mbranch-protection=standard -O3 -Wall -Wextra -c 
unictype/ctype_cntrl.c  -fPIC -DPIC -o unictype/.libs/libgnu_la-ctype_cntrl.o
| libtool: compile:  gcc -DHAVE_CONFIG_H -I. -I../config 
-I/usr/include/libusb-1.0 -Wdate-time -D_FORTIFY_SOURCE=2 -fvisibility=hidden 
-Wno-cast-qual -Wno-conversion -Wno-float-equal -Wno-sign-compare -Wno-undef 
-Wno-unused-function -Wno-unused-parameter -Wno-float-conversion 
-Wimplicit-fallthrough -Wno-pedantic -Wno-sign-conversion -Wno-type-limits 
-Wno-unused-const-variable -Wno-unsuffixed-float-constants -Wno-error -g -O2 
-Werror=implicit-function-declaration 
-ffile-prefix-map=/build/reproducible-path/eegdev-0.2=. 
-fstack-protector-strong -fstack-clash-protection -Wformat 
-Werror=format-security -mbranch-protection=standard -O3 -Wall -Wextra -c 
unictype/ctype_space.c  -fPIC -DPIC -o unictype/.libs/libgnu_la-ctype_space.o
| libtool: compile:  gcc -DHAVE_CONFIG_H -I. -I../config 
-I/usr/include/libusb-1.0 -Wdate-time -D_FORTIFY_SOURCE=2 -fvisibility=hidden 
-Wno-cast-qual -Wno-conversion -Wno-float-equal -Wno-sign-compare -Wno-undef 
-Wno-unused-function -Wno-unused-parameter -Wno-float-conversion 
-Wimplicit-fallthrough -Wno-pedantic -Wno-sign-conversion -Wno-type-limits 
-Wno-unused-const-variable -Wno-unsuffixed-float-constants -Wno-error -g -O2 
-Werror=implicit-function-declaration 
-ffile-prefix-map=/build/reproducible-path/eegdev-0.2=. 
-fstack-protector-strong -fstack-clash-protection -Wformat 
-Werror=format-security -mbranch-protection=standard -O3 -Wall -Wextra -c 
unictype/ctype_print.c  -fPIC -DPIC -o unictype/.libs/libgnu_la-ctype_print.o
| make[4]: *** [Makefile:3001: libgnu_la-mbrtoc32.lo] Error 1
| In file included from /usr/include/features.h:539,
|                  from ./wchar.h:69,
|                  from ./wctype.h:56,
|                  from wctype-h.c:23:
| ./wchar.h:856:23: error: expected identifier or '(' before '_Generic'
|   856 | _GL_EXTERN_C wchar_t *wmemchr (const wchar_t *__s, wchar_t __wc, 
size_t __n)
|       |                       ^~~~~~~
| In file included from /usr/include/features.h:539,
|                  from /usr/include/errno.h:25,
|                  from glthread/threadlib.c:27:
| ./stdlib.h:820:20: error: expected identifier or '(' before '_Generic'
|   820 | _GL_EXTERN_C void *bsearch (const void *__key,
|       |                    ^~~~~~~
| libtool: compile:  gcc -DHAVE_CONFIG_H -I. -I../config 
-I/usr/include/libusb-1.0 -Wdate-time -D_FORTIFY_SOURCE=2 -fvisibility=hidden 
-Wno-cast-qual -Wno-conversion -Wno-float-equal -Wno-sign-compare -Wno-undef 
-Wno-unused-function -Wno-unused-parameter -Wno-float-conversion 
-Wimplicit-fallthrough -Wno-pedantic -Wno-sign-conversion -Wno-type-limits 
-Wno-unused-const-variable -Wno-unsuffixed-float-constants -Wno-error -g -O2 
-Werror=implicit-function-declaration 
-ffile-prefix-map=/build/reproducible-path/eegdev-0.2=. 
-fstack-protector-strong -fstack-clash-protection -Wformat 
-Werror=format-security -mbranch-protection=standard -O3 -Wall -Wextra -c 
unictype/ctype_upper.c  -fPIC -DPIC -o unictype/.libs/libgnu_la-ctype_upper.o
| In file included from /usr/include/features.h:539,
|                  from 
/usr/include/aarch64-linux-gnu/bits/libc-header-start.h:33,
|                  from /usr/include/stdio.h:28,
|                  from ./stdio.h:55,
|                  from vsnzprintf.c:23:
| ./stdlib.h:820:20: error: expected identifier or '(' before '_Generic'
|   820 | _GL_EXTERN_C void *bsearch (const void *__key,
|       |                    ^~~~~~~
| In file included from /usr/include/features.h:539,
|                  from /usr/include/errno.h:25,
|                  from ./libc-config.h:42,
|                  from malloc/dynarray_at_failure.c:20:
| ./stdlib.h:820:20: error: expected identifier or '(' before '_Generic'
|   820 | _GL_EXTERN_C void *bsearch (const void *__key,
|       |                    ^~~~~~~
| In file included from /usr/include/features.h:539,
|                  from ./wchar.h:69,
|                  from printf-args.h:36,
|                  from printf-args.c:29:
| ./wchar.h:856:23: error: expected identifier or '(' before '_Generic'
|   856 | _GL_EXTERN_C wchar_t *wmemchr (const wchar_t *__s, wchar_t __wc, 
size_t __n)
|       |                       ^~~~~~~
| make[4]: *** [Makefile:3190: glthread/libgnu_la-threadlib.lo] Error 1
| make[4]: *** [Makefile:3022: libgnu_la-mbsnlen.lo] Error 1
| make[4]: *** [Makefile:3330: libgnu_la-wctype-h.lo] Error 1
| In file included from /usr/include/features.h:539,
|                  from printf-parse.h:26,
|                  from printf-parse.c:36:
| ./wchar.h:856:23: error: expected identifier or '(' before '_Generic'
|   856 | _GL_EXTERN_C wchar_t *wmemchr (const wchar_t *__s, wchar_t __wc, 
size_t __n)
|       |                       ^~~~~~~
| In file included from /usr/include/features.h:539,
|                  from /usr/include/errno.h:25,
|                  from ./glthread/lock.h:81,
|                  from glthread/lock.c:22:
| ./stdlib.h:820:20: error: expected identifier or '(' before '_Generic'
|   820 | _GL_EXTERN_C void *bsearch (const void *__key,
|       |                    ^~~~~~~
| In file included from /usr/include/features.h:539,
|                  from /usr/include/errno.h:25,
|                  from ./glthread/once.h:42,
|                  from glthread/once.c:22:
| ./stdlib.h:820:20: error: expected identifier or '(' before '_Generic'
|   820 | _GL_EXTERN_C void *bsearch (const void *__key,
|       |                    ^~~~~~~
| make[4]: *** [Makefile:3309: libgnu_la-vsnzprintf.lo] Error 1
| ./stdlib.h:820:20: error: expected identifier or '(' before '_Generic'
|   820 | _GL_EXTERN_C void *bsearch (const void *__key,
|       |                    ^~~~~~~
| In file included from /usr/include/features.h:539,
|                  from /usr/include/errno.h:25,
|                  from ./libc-config.h:42,
|                  from malloc/dynarray_emplace_enlarge.c:20:
| ./stdlib.h:820:20: error: expected identifier or '(' before '_Generic'
|   820 | _GL_EXTERN_C void *bsearch (const void *__key,
|       |                    ^~~~~~~
| In file included from /usr/include/features.h:539,
|                  from /usr/include/errno.h:25,
|                  from ./libc-config.h:42,
|                  from malloc/dynarray_resize.c:20:
| ./stdlib.h:820:20: error: expected identifier or '(' before '_Generic'
|   820 | _GL_EXTERN_C void *bsearch (const void *__key,
|       |                    ^~~~~~~
| In file included from /usr/include/features.h:539,
|                  from 
/usr/include/aarch64-linux-gnu/bits/libc-header-start.h:33,
|                  from /usr/include/stdio.h:28,
|                  from ./stdio.h:55,
|                  from vasnprintf.h:32,
|                  from vasnprintf.c:79:
| ./stdlib.h:820:20: error: expected identifier or '(' before '_Generic'
|   820 | _GL_EXTERN_C void *bsearch (const void *__key,
|       |                    ^~~~~~~
| make[4]: *** [Makefile:2868: malloc/libgnu_la-dynarray_at_failure.lo] Error 1
| ./stdlib.h:820:20: error: expected identifier or '(' before '_Generic'
|   820 | _GL_EXTERN_C void *bsearch (const void *__key,
|       |                    ^~~~~~~
| In file included from /usr/include/features.h:539,
|                  from /usr/include/errno.h:25,
|                  from ./libc-config.h:42,
|                  from malloc/dynarray_finalize.c:20:
| ./stdlib.h:820:20: error: expected identifier or '(' before '_Generic'
|   820 | _GL_EXTERN_C void *bsearch (const void *__key,
|       |                    ^~~~~~~
| make[4]: *** [Makefile:3463: libgnu_la-printf-args.lo] Error 1
| make[4]: *** [Makefile:2889: malloc/libgnu_la-dynarray_resize.lo] Error 1
| make[4]: *** [Makefile:2875: malloc/libgnu_la-dynarray_emplace_enlarge.lo] 
Error 1
| make[4]: *** [Makefile:2882: malloc/libgnu_la-dynarray_finalize.lo] Error 1
| make[4]: *** [Makefile:2980: glthread/libgnu_la-lock.lo] Error 1
| make[4]: *** [Makefile:3078: glthread/libgnu_la-once.lo] Error 1
| ./wchar.h:856:23: error: expected identifier or '(' before '_Generic'
|   856 | _GL_EXTERN_C wchar_t *wmemchr (const wchar_t *__s, wchar_t __wc, 
size_t __n)
|       |                       ^~~~~~~
| make[4]: *** [Makefile:3470: libgnu_la-printf-parse.lo] Error 1
| make[4]: *** [Makefile:3477: libgnu_la-vasnprintf.lo] Error 1
| make[4]: Leaving directory '/build/reproducible-path/eegdev-0.2/lib'
| make[3]: *** [Makefile:3518: all-recursive] Error 1
| make[3]: Leaving directory '/build/reproducible-path/eegdev-0.2/lib'
| make[2]: *** [Makefile:2363: all] Error 2
| make[2]: Leaving directory '/build/reproducible-path/eegdev-0.2/lib'
| make[1]: *** [Makefile:1895: all-recursive] Error 1
| make[1]: Leaving directory '/build/reproducible-path/eegdev-0.2'
| dh_auto_build: error: make -j128 returned exit code 2
| make: *** [debian/rules:15: binary] Error 25
| dpkg-buildpackage: error: debian/rules binary subprocess failed with exit 
status 2

The full build log is available here [1].

The issue is due to ISO C23 declaration of bsearch, memchr, strchr,
strpbrk, strrchr, strstr, wcschr, wcspbrk, wcsrchr, wcsstr and wmemchr,
which now returns a pointer to a const-qualified type when the input
argument is a pointer to a const-qualified type [2].

I would like to thanks Emanuele Rocca for doing the archive rebuild on
a fast arm64 server.

Regards
Aurelien

[1] 
https://people.debian.org/~ema/glibc-2.43-rebuilds/output-1/eegdev_arm64.build
[2] 
https://sourceware.org/git/?p=glibc.git;a=blob;f=NEWS;h=e271fb2e4d76903c77a302aaec1ca22ce31027d0;hb=f762ccf84f122d1354f103a151cba8bde797d521#l19

-- 
Aurelien Jarno                          GPG: 4096R/1DDD8C9B
[email protected]                     http://aurel32.net

--- End Message ---
--- Begin Message ---
Hi,

On 2026-02-20 23:37, Aurelien Jarno wrote:
> Source: eegdev
> Version: 0.2-12
> Severity: important
> Tags: ftbfs upstream
> Justification: fails to build from source
> User: [email protected]
> Usertags: glibc-2.43
> 
> Dear maintainer(s),
> 
> eegdev fails to build from source with glibc 2.43, currently in
> experimental. From the build log:

It happens that the issue was due to an outdated version of gnulib
(20251215-1 instead of 20260109-1~exp1 currently in sid) that was used
for the test build.

Sorry about the broken bug report. I am therefore closing the bug.

Regards
Aurelien

-- 
Aurelien Jarno                          GPG: 4096R/1DDD8C9B
[email protected]                     http://aurel32.net

--- End Message ---

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