# If using GCC specify some additional parameters
if test "x$GCC" = "xyes" ; then
- DESIRED_FLAGS="-Wall -W -Wextra -pedantic -pipe -Wformat -Wold-style-definition -Wdeclaration-after-statement -Wfloat-equal -Wmissing-declarations -Wmissing-prototypes -Wstrict-prototypes -Wredundant-decls -Wmissing-noreturn -Wshadow -Wendif-labels -Wpointer-arith -Wbad-function-cast -Wcast-qual -Wcast-align -Wwrite-strings -Winline -Wno-unused-parameter"
-
- if test "x$HAVE_NETLINK" = "xyes" ; then
- # Test whether rtnetlink.h can be included when compiled with -std=c99
- # some distributions (e.g. archlinux) have broken headers that dont
- # define __u64 with -std=c99
- AC_MSG_CHECKING([checking whether rtnetlink.h can be included with -std=c99])
- OLDCFLAGS="$CFLAGS"
- CFLAGS="-std=c99"
- AC_TRY_COMPILE([#include <linux/rtnetlink.h>], [],
- use_stdc99=yes, use_stdc99=no)
-
- if test x"$use_stdc99" = xyes; then
- DESIRED_FLAGS="-std=c99 $DESIRED_FLAGS"
- AC_MSG_RESULT([yes])
- else
- AC_MSG_RESULT([no])
- fi
-
- CFLAGS="$OLDCFLAGS"
- else
- DESIRED_FLAGS="-std=c99 $DESIRED_FLAGS"
- fi
+ # We use gnu99 instead of c99 because many have interpreted the standard
+ # in a way that int64_t isn't defined on non-64 bit platforms.
+ DESIRED_FLAGS="-std=gnu99 -Wall -W -Wextra -pedantic -pipe -Wformat -Wold-style-definition -Wdeclaration-after-statement -Wfloat-equal -Wmissing-declarations -Wmissing-prototypes -Wstrict-prototypes -Wredundant-decls -Wmissing-noreturn -Wshadow -Wendif-labels -Wpointer-arith -Wbad-function-cast -Wcast-qual -Wcast-align -Wwrite-strings -Winline -Wno-unused-parameter"
for flag in $DESIRED_FLAGS ; do
AC_MSG_CHECKING([whether $CC accepts $flag])