Source: scheme48
Version: 1.9.2-4
Tags: patch
User: [email protected]
Usertags: ftcbfs
scheme48 fails to cross build from source, because it uses AC_TRY_RUN a
lot and it doesn't work during cross compilation. In many cases, the use
is not necessary. For instance determining the size of a pointer can be
done with AC_CHECK_SIZEOF. In other cases, the program being run simply
is int main() { return 0; } and that doesn't provide any benefit over
AC_LINK_IFELSE. I am attaching a patch that reduces some amount of
AC_TRY_RUN and thus brings scheme48 quite a bit close to cross building.
Many of the remaining checks actually do need to run something. Going
further probably requires exporting cached check results. In this bug
report, I want to focus on the low hanging fruit though. Do you find the
proposed changes acceptable?
Helmut
diff -Nru
scheme48-1.9.2/debian/additional-sources/m4/s48_determine_pointer_size.m4
scheme48-1.9.2/debian/additional-sources/m4/s48_determine_pointer_size.m4
--- scheme48-1.9.2/debian/additional-sources/m4/s48_determine_pointer_size.m4
2024-08-18 09:41:05.000000000 +0200
+++ scheme48-1.9.2/debian/additional-sources/m4/s48_determine_pointer_size.m4
1970-01-01 01:00:00.000000000 +0100
@@ -1,28 +0,0 @@
-### s48_determine_pointer_size.m4 --- S48_DETERMINE_POINTER_SIZE macro -*-
Autoconf -*-
-# serial 1
-dnl
-dnl
-dnl Determines the size of a pointer.
-AC_DEFUN([S48_DETERMINE_POINTER_SIZE], [dnl
-dnl Our own version of AC_CHECK_SIZEOF([void *])
-AC_MSG_CHECKING(size of void *)
-AC_CACHE_VAL(ac_cv_sizeof_void_p,
- [AC_TRY_RUN([#include <stdio.h>
- #include <stdlib.h>
- int main()
- {
- FILE *f=fopen("conftestval", "w");
- if (!f) exit(1);
- fprintf(f, "%d\n", (int)sizeof(void *));
- exit(0);
- }],
- ac_cv_sizeof_void_p=`cat conftestval`,
- ac_cv_sizeof_void_p=0,
- AC_MSG_ERROR(failed to compile test program))])
- if test "$ac_cv_sizeof_void_p" = "0" -o "$ac_cv_sizeof_void_p" = ""; then
- AC_MSG_ERROR([Unable to determine sizeof (void *), see config.log for
details.]);
- fi
- AC_MSG_RESULT($ac_cv_sizeof_void_p)
- AC_DEFINE_UNQUOTED(SIZEOF_VOID_P, [$ac_cv_sizeof_void_p], [Check for
sizeof (void *)])
-])
-### s48_determine_pointer_size.m4 ends here
diff -Nru scheme48-1.9.2/debian/additional-sources/m4/s48_glib.m4
scheme48-1.9.2/debian/additional-sources/m4/s48_glib.m4
--- scheme48-1.9.2/debian/additional-sources/m4/s48_glib.m4 2024-08-18
09:41:05.000000000 +0200
+++ scheme48-1.9.2/debian/additional-sources/m4/s48_glib.m4 2026-01-27
09:16:29.000000000 +0100
@@ -15,7 +15,7 @@
CFLAGS="$CFLAGS $GLIB_CFLAGS"
dnl Check if we still are able to compile, link, and run with glib's
build options
AC_MSG_CHECKING([whether the GLIB flags work])
- AC_TRY_RUN([int main() { return 0;}], [AC_MSG_RESULT([yes])],
[AC_MSG_ERROR(Failed to compile with GLIB flags.)], [])
+ AC_LINK_IFELSE([int main() { return 0;}], [AC_MSG_RESULT([yes])],
[AC_MSG_ERROR(Failed to compile with GLIB flags.)])
fi])
])
### s48_glib.m4 ends here
diff -Nru scheme48-1.9.2/debian/additional-sources/m4/s48_ldflags.m4
scheme48-1.9.2/debian/additional-sources/m4/s48_ldflags.m4
--- scheme48-1.9.2/debian/additional-sources/m4/s48_ldflags.m4 2024-08-18
09:41:05.000000000 +0200
+++ scheme48-1.9.2/debian/additional-sources/m4/s48_ldflags.m4 2026-01-27
09:16:29.000000000 +0100
@@ -8,11 +8,9 @@
AC_MSG_CHECKING([-rdynamic])
oldLDFLAGS="$LDFLAGS"
LDFLAGS="$LDFLAGS -rdynamic"
- AC_TRY_RUN([int main() { return 0;}],
+ AC_LINK_IFELSE([int main() { return 0;}],
[AC_MSG_RESULT(yes)],
[AC_MSG_RESULT(no)
- LDFLAGS="$oldLDFLAGS"],
- [AC_MSG_RESULT(no)
LDFLAGS="$oldLDFLAGS"])
AC_MSG_CHECKING([LDFLAGS_VM])
case "$host_os" in
diff -Nru scheme48-1.9.2/debian/additional-sources/m4/s48_misaligned_doubles.m4
scheme48-1.9.2/debian/additional-sources/m4/s48_misaligned_doubles.m4
--- scheme48-1.9.2/debian/additional-sources/m4/s48_misaligned_doubles.m4
2024-08-18 09:41:05.000000000 +0200
+++ scheme48-1.9.2/debian/additional-sources/m4/s48_misaligned_doubles.m4
2026-01-27 09:16:29.000000000 +0100
@@ -8,12 +8,10 @@
AC_MSG_CHECKING([-munaligned-doubles])
oldCFLAGS="$CFLAGS"
CFLAGS="$CFLAGS -munaligned-doubles"
- AC_TRY_RUN([int main() { return 0;}],
+ AC_LINK_IFELSE([int main() { return 0;}],
[AC_MSG_RESULT(yes)
DYNAMIC_EXTERNALS_CFLAGS="$DYNAMIC_EXTERNALS_CFLAGS -munaligned-doubles"],
[AC_MSG_RESULT(no)
- CFLAGS="$oldCFLAGS"],
- [AC_MSG_RESULT(no)
CFLAGS="$oldCFLAGS"])
fi
])dnl
diff -Nru scheme48-1.9.2/debian/changelog scheme48-1.9.2/debian/changelog
--- scheme48-1.9.2/debian/changelog 2024-08-18 09:41:05.000000000 +0200
+++ scheme48-1.9.2/debian/changelog 2026-01-27 09:16:29.000000000 +0100
@@ -1,3 +1,12 @@
+scheme48 (1.9.2-4.1) UNRELEASED; urgency=medium
+
+ * Non-maintainer upload.
+ * Improve cross building: (Closes: #-1)
+ + Replace custom check with AC_CHECK_SIZEOF.
+ + Turn some AC_TRY_RUN into AC_LINK_IFELSE.
+
+ -- Helmut Grohne <[email protected]> Tue, 27 Jan 2026 09:16:29 +0100
+
scheme48 (1.9.2-4) unstable; urgency=medium
* debian/rules: after having fixed the ./configure problems, the errors
diff -Nru scheme48-1.9.2/debian/patches/cross.patch
scheme48-1.9.2/debian/patches/cross.patch
--- scheme48-1.9.2/debian/patches/cross.patch 1970-01-01 01:00:00.000000000
+0100
+++ scheme48-1.9.2/debian/patches/cross.patch 2026-01-27 09:16:23.000000000
+0100
@@ -0,0 +1,11 @@
+--- scheme48-1.9.2.orig/configure.in
++++ scheme48-1.9.2/configure.in
+@@ -26,7 +26,7 @@
+ S48_PICK_GC
+ S48_ENABLE_FORCE_32BIT
+ S48_DETERMINE_BITS_PER_BYTE
+- S48_DETERMINE_POINTER_SIZE
++ AC_CHECK_SIZEOF([void *])
+ S48_DETERMINE_BIT_SUFFIX
+ S48_ENABLE_UNIVERSAL_BINARY
+ S48_OSX_ARCH_FLAGS($S48_BUILD_UNIVERSAL_P,$S48_FORCE_32_P)
diff -Nru scheme48-1.9.2/debian/patches/series
scheme48-1.9.2/debian/patches/series
--- scheme48-1.9.2/debian/patches/series 2024-08-18 09:41:05.000000000
+0200
+++ scheme48-1.9.2/debian/patches/series 2026-01-27 09:15:17.000000000
+0100
@@ -7,3 +7,4 @@
security-tmpfile.patch
spelling.patch
#does not seem to work (see #776236) ignore-radix-1.patch
+cross.patch
