Hi Alan,
just for the records, this is how my cross-build fails: ../gcc-4.9-20131215/configure --prefix=/home/ed/gnu/x/arm-linux-gnueabihf-cross --host=arm-linux-gnueabihf --target=arm-linux-gnueabihf --enable-languages=c,c++ --with-arch=armv7-a --with-tune=cortex-a9 --with-fpu=vfpv3-d16 --with-float=hard ... make[2]: Entering directory `/home/ed/gnu/x/gcc-build-arm-linux-gnueabihf-cross/gcc' g++ -c -DIN_GCC -DGENERATOR_FILE -I. -Ibuild -I../../gcc-4.9-20131215/gcc -I../../gcc-4.9-20131215/gcc/build -I../../gcc-4.9-20131215/gcc/../include -I../../gcc-4.9-20131215/gcc/../libcpp/include -I/home/ed/gnu/x/gcc-build-arm-linux-gnueabihf-cross/./gmp -I/home/ed/gnu/x/gcc-4.9-20131215/gmp -I/home/ed/gnu/x/gcc-build-arm-linux-gnueabihf-cross/./mpfr -I/home/ed/gnu/x/gcc-4.9-20131215/mpfr -I/home/ed/gnu/x/gcc-4.9-20131215/mpc/src -I../../gcc-4.9-20131215/gcc/../libdecnumber -I../../gcc-4.9-20131215/gcc/../libdecnumber/dpd -I../libdecnumber -I../../gcc-4.9-20131215/gcc/../libbacktrace \ -o build/genmddeps.o ../../gcc-4.9-20131215/gcc/genmddeps.c In file included from ./bconfig.h:3:0, from ../../gcc-4.9-20131215/gcc/genmddeps.c:18: ./auto-build.h:2037:16: error: declaration does not declare anything [-fpermissive] #define rlim_t long ^ In file included from ../../gcc-4.9-20131215/gcc/genmddeps.c:19:0: ../../gcc-4.9-20131215/gcc/system.h:450:23: error: conflicting declaration of C function 'void* sbrk(int)' extern void *sbrk (int); ^ In file included from ../../gcc-4.9-20131215/gcc/system.h:262:0, from ../../gcc-4.9-20131215/gcc/genmddeps.c:19: /usr/include/unistd.h:1067:14: note: previous declaration 'void* sbrk(intptr_t)' extern void *sbrk (intptr_t __delta) __THROW; ^ In file included from ../../gcc-4.9-20131215/gcc/genmddeps.c:19:0: ../../gcc-4.9-20131215/gcc/system.h:454:48: error: ambiguating new declaration of 'char* strstr(const char*, const char*)' extern char *strstr (const char *, const char *); ^ In file included from /home/ed/gnu/install/include/c++/4.9.0/cstring:42:0, from ../../gcc-4.9-20131215/gcc/system.h:205, from ../../gcc-4.9-20131215/gcc/genmddeps.c:19: /usr/include/string.h:323:22: note: old declaration 'const char* strstr(const char*, const char*)' extern __const char *strstr (__const char *__haystack, ^ In file included from /usr/include/features.h:357:0, from /usr/include/stdio.h:28, from ../../gcc-4.9-20131215/gcc/system.h:40, from ../../gcc-4.9-20131215/gcc/genmddeps.c:19: /usr/include/malloc.h:76:32: error: declaration of 'void free(void*) throw ()' has a different exception specifier extern void free (void *__ptr) __THROW; ^ In file included from ../../gcc-4.9-20131215/gcc/genmddeps.c:19:0: ../../gcc-4.9-20131215/gcc/system.h:426:13: error: from previous declaration 'void free(void*)' extern void free (void *); ^ In file included from ../../gcc-4.9-20131215/gcc/genmddeps.c:19:0: ../../gcc-4.9-20131215/gcc/system.h:506:34: error: conflicting declaration of C function 'const char* strsignal(int)' extern const char *strsignal (int); ^ In file included from /home/ed/gnu/install/include/c++/4.9.0/cstring:42:0, from ../../gcc-4.9-20131215/gcc/system.h:205, from ../../gcc-4.9-20131215/gcc/genmddeps.c:19: /usr/include/string.h:566:14: note: previous declaration 'char* strsignal(int)' extern char *strsignal (int __sig) __THROW; ^ In file included from ./bconfig.h:5:0, from ../../gcc-4.9-20131215/gcc/genmddeps.c:18: ../../gcc-4.9-20131215/gcc/../include/ansidecl.h:308:64: error: ambiguating new declaration of 'char* basename(const char*)' # define ATTRIBUTE_NONNULL(m) __attribute__ ((__nonnull__ (m))) ^ ../../gcc-4.9-20131215/gcc/../include/libiberty.h:110:64: note: in expansion of macro 'ATTRIBUTE_NONNULL' extern char *basename (const char *) ATTRIBUTE_RETURNS_NONNULL ATTRIBUTE_NONNULL(1); ^ In file included from /home/ed/gnu/install/include/c++/4.9.0/cstring:42:0, from ../../gcc-4.9-20131215/gcc/system.h:205, from ../../gcc-4.9-20131215/gcc/genmddeps.c:19: /usr/include/string.h:603:28: note: old declaration 'const char* basename(const char*)' extern "C++" __const char *basename (__const char *__filename) ^ In file included from ./bconfig.h:5:0, from ../../gcc-4.9-20131215/gcc/genmddeps.c:18: ../../gcc-4.9-20131215/gcc/../include/ansidecl.h:308:64: error: declaration of 'int snprintf(char*, size_t, const char*, ...)' has a different exception specifier # define ATTRIBUTE_NONNULL(m) __attribute__ ((__nonnull__ (m))) ^ ../../gcc-4.9-20131215/gcc/../include/ansidecl.h:337:80: note: in expansion of macro 'ATTRIBUTE_NONNULL' #define ATTRIBUTE_PRINTF(m, n) __attribute__ ((__format__ (__printf__, m, n))) ATTRIBUTE_NONNULL(m) ^ ../../gcc-4.9-20131215/gcc/../include/ansidecl.h:340:28: note: in expansion of macro 'ATTRIBUTE_PRINTF' #define ATTRIBUTE_PRINTF_3 ATTRIBUTE_PRINTF(3, 4) ^ ../../gcc-4.9-20131215/gcc/../include/libiberty.h:628:57: note: in expansion of macro 'ATTRIBUTE_PRINTF_3' extern int snprintf (char *, size_t, const char *, ...) ATTRIBUTE_PRINTF_3; ^ In file included from ../../gcc-4.9-20131215/gcc/genmddeps.c:19:0: ../../gcc-4.9-20131215/gcc/system.h:533:12: error: from previous declaration 'int snprintf(char*, size_t, const char*, ...) throw ()' extern int snprintf (char *, size_t, const char *, ...); ^ In file included from ./bconfig.h:5:0, from ../../gcc-4.9-20131215/gcc/genmddeps.c:18: ../../gcc-4.9-20131215/gcc/../include/ansidecl.h:308:64: error: declaration of 'int vsnprintf(char*, size_t, const char*, __va_list_tag*)' has a different exception specifier # define ATTRIBUTE_NONNULL(m) __attribute__ ((__nonnull__ (m))) ^ ../../gcc-4.9-20131215/gcc/../include/ansidecl.h:337:80: note: in expansion of macro 'ATTRIBUTE_NONNULL' #define ATTRIBUTE_PRINTF(m, n) __attribute__ ((__format__ (__printf__, m, n))) ATTRIBUTE_NONNULL(m) ^ ../../gcc-4.9-20131215/gcc/../include/libiberty.h:633:62: note: in expansion of macro 'ATTRIBUTE_PRINTF' extern int vsnprintf (char *, size_t, const char *, va_list) ATTRIBUTE_PRINTF(3,0); ^ In file included from ../../gcc-4.9-20131215/gcc/genmddeps.c:19:0: ../../gcc-4.9-20131215/gcc/system.h:537:12: error: from previous declaration 'int vsnprintf(char*, size_t, const char*, __va_list_tag*) throw ()' extern int vsnprintf (char *, size_t, const char *, va_list); ^ make[2]: *** [build/genmddeps.o] Error 1 make[2]: Leaving directory `/home/ed/gnu/x/gcc-build-arm-linux-gnueabihf-cross/gcc' make[1]: *** [all-gcc] Error 2 make[1]: Leaving directory `/home/ed/gnu/x/gcc-build-arm-linux-gnueabihf-cross' make: *** [all] Error 2 the reason for this is overwriting GMPINC for the auto-build generation, because many test scripts include <gmp.h> which fails now completely (it is not installed, I have it in-tree). But as you can see the actual invocation of the Build-compiler has still GMPINC set. diff -u gcc-build-arm-linux-gnueabihf-cross/gcc/auto-build.h x/gcc-build-arm-linux-gnueabihf-cross/gcc/auto-build.h --- gcc-build-arm-linux-gnueabihf-cross/gcc/auto-build.h 2013-12-16 13:55:19.008464424 +0100 +++ x/gcc-build-arm-linux-gnueabihf-cross/gcc/auto-build.h 2013-12-17 13:00:21.342234317 +0100 @@ -572,7 +572,7 @@ /* Define if <time.h> defines clock_t. */ #ifndef USED_FOR_TARGET -#define HAVE_CLOCK_T 1 +/* #undef HAVE_CLOCK_T */ #endif @@ -585,109 +585,109 @@ /* Define to 1 if we found a declaration for 'abort', otherwise define to 0. */ #ifndef USED_FOR_TARGET -#define HAVE_DECL_ABORT 1 +#define HAVE_DECL_ABORT 0 #endif /* Define to 1 if we found a declaration for 'asprintf', otherwise define to 0. */ #ifndef USED_FOR_TARGET -#define HAVE_DECL_ASPRINTF 1 +#define HAVE_DECL_ASPRINTF 0 #endif /* Define to 1 if we found a declaration for 'atof', otherwise define to 0. */ #ifndef USED_FOR_TARGET -#define HAVE_DECL_ATOF 1 +#define HAVE_DECL_ATOF 0 #endif /* Define to 1 if we found a declaration for 'atol', otherwise define to 0. */ #ifndef USED_FOR_TARGET -#define HAVE_DECL_ATOL 1 +#define HAVE_DECL_ATOL 0 #endif /* Define to 1 if we found a declaration for 'basename', otherwise define to 0. */ #ifndef USED_FOR_TARGET -#define HAVE_DECL_BASENAME 1 +#define HAVE_DECL_BASENAME 0 #endif /* Define to 1 if we found a declaration for 'calloc', otherwise define to 0. */ #ifndef USED_FOR_TARGET -#define HAVE_DECL_CALLOC 1 +#define HAVE_DECL_CALLOC 0 #endif /* Define to 1 if we found a declaration for 'clearerr_unlocked', otherwise define to 0. */ #ifndef USED_FOR_TARGET -#define HAVE_DECL_CLEARERR_UNLOCKED 1 +#define HAVE_DECL_CLEARERR_UNLOCKED 0 #endif /* Define to 1 if we found a declaration for 'clock', otherwise define to 0. */ #ifndef USED_FOR_TARGET -#define HAVE_DECL_CLOCK 1 +#define HAVE_DECL_CLOCK 0 #endif /* Define to 1 if we found a declaration for 'errno', otherwise define to 0. */ #ifndef USED_FOR_TARGET -#define HAVE_DECL_ERRNO 1 +#define HAVE_DECL_ERRNO 0 #endif /* Define to 1 if we found a declaration for 'feof_unlocked', otherwise define to 0. */ #ifndef USED_FOR_TARGET -#define HAVE_DECL_FEOF_UNLOCKED 1 +#define HAVE_DECL_FEOF_UNLOCKED 0 #endif /* Define to 1 if we found a declaration for 'ferror_unlocked', otherwise define to 0. */ #ifndef USED_FOR_TARGET -#define HAVE_DECL_FERROR_UNLOCKED 1 +#define HAVE_DECL_FERROR_UNLOCKED 0 #endif /* Define to 1 if we found a declaration for 'fflush_unlocked', otherwise define to 0. */ #ifndef USED_FOR_TARGET -#define HAVE_DECL_FFLUSH_UNLOCKED 1 +#define HAVE_DECL_FFLUSH_UNLOCKED 0 #endif /* Define to 1 if we found a declaration for 'ffs', otherwise define to 0. */ #ifndef USED_FOR_TARGET -#define HAVE_DECL_FFS 1 +#define HAVE_DECL_FFS 0 #endif /* Define to 1 if we found a declaration for 'fgetc_unlocked', otherwise define to 0. */ #ifndef USED_FOR_TARGET -#define HAVE_DECL_FGETC_UNLOCKED 1 +#define HAVE_DECL_FGETC_UNLOCKED 0 #endif /* Define to 1 if we found a declaration for 'fgets_unlocked', otherwise define to 0. */ #ifndef USED_FOR_TARGET -#define HAVE_DECL_FGETS_UNLOCKED 1 +#define HAVE_DECL_FGETS_UNLOCKED 0 #endif /* Define to 1 if we found a declaration for 'fileno_unlocked', otherwise define to 0. */ #ifndef USED_FOR_TARGET -#define HAVE_DECL_FILENO_UNLOCKED 1 +#define HAVE_DECL_FILENO_UNLOCKED 0 #endif @@ -701,62 +701,62 @@ /* Define to 1 if we found a declaration for 'fputc_unlocked', otherwise define to 0. */ #ifndef USED_FOR_TARGET -#define HAVE_DECL_FPUTC_UNLOCKED 1 +#define HAVE_DECL_FPUTC_UNLOCKED 0 #endif /* Define to 1 if we found a declaration for 'fputs_unlocked', otherwise define to 0. */ #ifndef USED_FOR_TARGET -#define HAVE_DECL_FPUTS_UNLOCKED 1 +#define HAVE_DECL_FPUTS_UNLOCKED 0 #endif /* Define to 1 if we found a declaration for 'fread_unlocked', otherwise define to 0. */ #ifndef USED_FOR_TARGET -#define HAVE_DECL_FREAD_UNLOCKED 1 +#define HAVE_DECL_FREAD_UNLOCKED 0 #endif /* Define to 1 if we found a declaration for 'free', otherwise define to 0. */ #ifndef USED_FOR_TARGET -#define HAVE_DECL_FREE 1 +#define HAVE_DECL_FREE 0 #endif /* Define to 1 if we found a declaration for 'fwrite_unlocked', otherwise define to 0. */ #ifndef USED_FOR_TARGET -#define HAVE_DECL_FWRITE_UNLOCKED 1 +#define HAVE_DECL_FWRITE_UNLOCKED 0 #endif /* Define to 1 if we found a declaration for 'getchar_unlocked', otherwise define to 0. */ #ifndef USED_FOR_TARGET -#define HAVE_DECL_GETCHAR_UNLOCKED 1 +#define HAVE_DECL_GETCHAR_UNLOCKED 0 #endif /* Define to 1 if we found a declaration for 'getcwd', otherwise define to 0. */ #ifndef USED_FOR_TARGET -#define HAVE_DECL_GETCWD 1 +#define HAVE_DECL_GETCWD 0 #endif /* Define to 1 if we found a declaration for 'getc_unlocked', otherwise define to 0. */ #ifndef USED_FOR_TARGET -#define HAVE_DECL_GETC_UNLOCKED 1 +#define HAVE_DECL_GETC_UNLOCKED 0 #endif /* Define to 1 if we found a declaration for 'getenv', otherwise define to 0. */ #ifndef USED_FOR_TARGET -#define HAVE_DECL_GETENV 1 +#define HAVE_DECL_GETENV 0 #endif @@ -770,28 +770,28 @@ /* Define to 1 if we found a declaration for 'getpagesize', otherwise define to 0. */ #ifndef USED_FOR_TARGET -#define HAVE_DECL_GETPAGESIZE 1 +#define HAVE_DECL_GETPAGESIZE 0 #endif /* Define to 1 if we found a declaration for 'getrlimit', otherwise define to 0. */ #ifndef USED_FOR_TARGET -#define HAVE_DECL_GETRLIMIT 1 +#define HAVE_DECL_GETRLIMIT 0 #endif /* Define to 1 if we found a declaration for 'getrusage', otherwise define to 0. */ #ifndef USED_FOR_TARGET -#define HAVE_DECL_GETRUSAGE 1 +#define HAVE_DECL_GETRUSAGE 0 #endif /* Define to 1 if we found a declaration for 'getwd', otherwise define to 0. */ #ifndef USED_FOR_TARGET -#define HAVE_DECL_GETWD 1 +#define HAVE_DECL_GETWD 0 #endif @@ -805,111 +805,111 @@ /* Define to 1 if we found a declaration for 'madvise', otherwise define to 0. */ #ifndef USED_FOR_TARGET -#define HAVE_DECL_MADVISE 1 +#define HAVE_DECL_MADVISE 0 #endif /* Define to 1 if we found a declaration for 'malloc', otherwise define to 0. */ #ifndef USED_FOR_TARGET -#define HAVE_DECL_MALLOC 1 +#define HAVE_DECL_MALLOC 0 #endif /* Define to 1 if we found a declaration for 'putchar_unlocked', otherwise define to 0. */ #ifndef USED_FOR_TARGET -#define HAVE_DECL_PUTCHAR_UNLOCKED 1 +#define HAVE_DECL_PUTCHAR_UNLOCKED 0 #endif /* Define to 1 if we found a declaration for 'putc_unlocked', otherwise define to 0. */ #ifndef USED_FOR_TARGET -#define HAVE_DECL_PUTC_UNLOCKED 1 +#define HAVE_DECL_PUTC_UNLOCKED 0 #endif /* Define to 1 if we found a declaration for 'realloc', otherwise define to 0. */ #ifndef USED_FOR_TARGET -#define HAVE_DECL_REALLOC 1 +#define HAVE_DECL_REALLOC 0 #endif /* Define to 1 if we found a declaration for 'sbrk', otherwise define to 0. */ #ifndef USED_FOR_TARGET -#define HAVE_DECL_SBRK 1 +#define HAVE_DECL_SBRK 0 #endif /* Define to 1 if we found a declaration for 'setrlimit', otherwise define to 0. */ #ifndef USED_FOR_TARGET -#define HAVE_DECL_SETRLIMIT 1 +#define HAVE_DECL_SETRLIMIT 0 #endif /* Define to 1 if we found a declaration for 'sigaltstack', otherwise define to 0. */ #ifndef USED_FOR_TARGET -#define HAVE_DECL_SIGALTSTACK 1 +#define HAVE_DECL_SIGALTSTACK 0 #endif /* Define to 1 if we found a declaration for 'snprintf', otherwise define to 0. */ #ifndef USED_FOR_TARGET -#define HAVE_DECL_SNPRINTF 1 +#define HAVE_DECL_SNPRINTF 0 #endif /* Define to 1 if we found a declaration for 'stpcpy', otherwise define to 0. */ #ifndef USED_FOR_TARGET -#define HAVE_DECL_STPCPY 1 +#define HAVE_DECL_STPCPY 0 #endif /* Define to 1 if we found a declaration for 'strsignal', otherwise define to 0. */ #ifndef USED_FOR_TARGET -#define HAVE_DECL_STRSIGNAL 1 +#define HAVE_DECL_STRSIGNAL 0 #endif /* Define to 1 if we found a declaration for 'strstr', otherwise define to 0. */ #ifndef USED_FOR_TARGET -#define HAVE_DECL_STRSTR 1 +#define HAVE_DECL_STRSTR 0 #endif /* Define to 1 if we found a declaration for 'strverscmp', otherwise define to 0. */ #ifndef USED_FOR_TARGET -#define HAVE_DECL_STRVERSCMP 1 +#define HAVE_DECL_STRVERSCMP 0 #endif /* Define to 1 if we found a declaration for 'times', otherwise define to 0. */ #ifndef USED_FOR_TARGET -#define HAVE_DECL_TIMES 1 +#define HAVE_DECL_TIMES 0 #endif /* Define to 1 if we found a declaration for 'vasprintf', otherwise define to 0. */ #ifndef USED_FOR_TARGET -#define HAVE_DECL_VASPRINTF 1 +#define HAVE_DECL_VASPRINTF 0 #endif /* Define to 1 if we found a declaration for 'vsnprintf', otherwise define to 0. */ #ifndef USED_FOR_TARGET -#define HAVE_DECL_VSNPRINTF 1 +#define HAVE_DECL_VSNPRINTF 0 #endif @@ -1474,7 +1474,7 @@ /* Define if <sys/times.h> defines struct tms. */ #ifndef USED_FOR_TARGET -#define HAVE_STRUCT_TMS 1 +/* #undef HAVE_STRUCT_TMS */ #endif @@ -2034,7 +2034,7 @@ /* Define to `long' if <sys/resource.h> doesn't define. */ #ifndef USED_FOR_TARGET -/* #undef rlim_t */ +#define rlim_t long #endif Regards Bernd.
