[PATCH] configure.ac: drop -Wl,--fatal-warnings

[Fabrice Fontaine <fontaine.fabrice@xxxxxxxxx>]

Drop -Wl,--fatal-warnings with --enable-static to avoid the following
static build failure:

configure:4778: checking for strtod
configure:4778: /home/autobuild/autobuild/instance-8/output-1/host/bin/powerpc-buildroot-linux-uclibcspe-gcc -o conftest -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64 -mabi=spe -mfloat-gprs=single -Wa,-me500 -Os -g0  -static -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64 -static -Wl,--fatal-warnings conftest.c  >&5
/home/autobuild/autobuild/instance-8/output-1/host/lib/gcc/powerpc-buildroot-linux-uclibcspe/8.4.0/../../../../powerpc-buildroot-linux-uclibcspe/bin/ld: warning: conftest has a LOAD segment with RWX permissions
collect2: error: ld returned 1 exit status

[...]

In file included from arith_yylex.c:44:
system.h:74:22: error: static declaration of 'strtod' follows non-static declaration
 static inline double strtod(const char *nptr, char **endptr)
                      ^~~~~~

Fixes:
 - http://autobuild.buildroot.org/results/a54fdc7d1b94beb47203373ae35b08d9cea8d42c

Signed-off-by: Fabrice Fontaine <fontaine.fabrice@xxxxxxxxx>
---
 configure.ac | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/configure.ac b/configure.ac
index 5524650..6993364 100644
--- a/configure.ac
+++ b/configure.ac
@@ -34,7 +34,7 @@ fi
 AC_ARG_ENABLE(static, AS_HELP_STRING(--enable-static, \
 				     [Build statical linked program]))
 if test "$enable_static" = "yes"; then
-	export LDFLAGS="-static -Wl,--fatal-warnings"
+	export LDFLAGS="-static"
 fi
 
 AC_ARG_ENABLE(fnmatch, AS_HELP_STRING(--disable-fnmatch, \
-- 
2.43.0