https://gcc.gnu.org/bugzilla/show_bug.cgi?id=109293
--- Comment #5 from Andrew Pinski <pinskia at gcc dot gnu.org> --- Something like this: diff --git a/fixincludes/configure.ac b/fixincludes/configure.ac index 14813b910f1..00aeb1ce1d9 100644 --- a/fixincludes/configure.ac +++ b/fixincludes/configure.ac @@ -89,6 +89,7 @@ define(fixincludes_UNLOCKED_FUNCS, clearerr_unlocked feof_unlocked dnl putchar_unlocked putc_unlocked) AC_CHECK_FUNCS(fixincludes_UNLOCKED_FUNCS) AC_CHECK_DECLS([abort, asprintf, basename(char *), errno, vasprintf]) +AC_CHECK_DECLS([memmem]) AC_CHECK_DECLS(m4_split(m4_normalize(fixincludes_UNLOCKED_FUNCS))) # Checks for typedefs, structures, and compiler characteristics. diff --git a/fixincludes/system.h b/fixincludes/system.h index dca5d57b2e3..f7bbd0e952c 100644 --- a/fixincludes/system.h +++ b/fixincludes/system.h @@ -209,6 +209,11 @@ extern int errno; extern void abort (void); #endif +#if defined (HAVE_DECL_MEMMEM) && !HAVE_DECL_MEMMEM +extern void *memmem (const void *, size_t, const void *, size_t); +#endif + + #if HAVE_SYS_STAT_H # include <sys/stat.h> #endif
