Only use -fgnu89-inline when supported

This only works for GCC 4.3 and newer. GCC 4.2 and older already have
the semantics introduced by using this argument.
This commit is contained in:
Daniel Drake 2008-03-07 00:11:56 +00:00
parent 647d140834
commit 81a5d6d966

View file

@ -90,9 +90,14 @@ if test "x$debug_log_enabled" != "xno"; then
AC_DEFINE([ENABLE_DEBUG_LOGGING], 1, [Debug message logging])
fi
# Restore gnu89 inline semantics on gcc 4.3 and newer
saved_cflags="$CFLAGS"
CFLAGS="$CFLAGS -fgnu89-inline"
AC_COMPILE_IFELSE(AC_LANG_PROGRAM([]), inline_cflags="-fgnu89-inline", inline_cflags="")
CFLAGS="$saved_cflags"
AC_DEFINE([API_EXPORTED], [__attribute__((visibility("default")))], [Default visibility])
AM_CFLAGS="-std=gnu99 -fgnu89-inline -Wall -Wundef -Wunused -Wstrict-prototypes -Werror-implicit-function-declaration -Wno-pointer-sign -Wshadow"
AM_CFLAGS="-std=gnu99 $inline_cflags -Wall -Wundef -Wunused -Wstrict-prototypes -Werror-implicit-function-declaration -Wno-pointer-sign -Wshadow"
AC_SUBST(AM_CFLAGS)
AC_CONFIG_FILES([libfprint.pc] [Makefile] [libfprint/Makefile] [examples/Makefile] [doc/Makefile])