X-Git-Url: https://git.octo.it/?p=rrdtool.git;a=blobdiff_plain;f=configure.ac;h=8647eb00a2c6dfefeeabdc3728f495eba321721d;hp=6cc2767edc21c4eed095f2e3f4541eec6919abf6;hb=8a092a1ac0d22448114c29c2d872769340965132;hpb=8106f1070a0affaa20c495fc9c38f192b199e8b7

diff --git a/configure.ac b/configure.ac
index 6cc2767..8647eb0 100644
--- a/configure.ac
+++ b/configure.ac
@@ -203,7 +203,9 @@ AC_C_BIGENDIAN
 dnl for each function found we get a definition in config.h 
 dnl of the form HAVE_FUNCTION
 
-AC_CHECK_FUNCS(tzset fsync mbstowcs opendir readdir chdir chroot getuid setlocale strerror strerror_r snprintf vsnprintf fpclass class fp_class isnan memmove strchr mktime getrusage gettimeofday)
+AC_CHECK_FUNCS(tzset fsync mbstowcs opendir readdir chdir chroot getuid setlocale strerror snprintf vsnprintf vasprintf fpclass class fp_class isnan memmove strchr mktime getrusage gettimeofday)
+
+AC_FUNC_STRERROR_R
 
 CONFIGURE_PART(Map/Fadvis/Madvise checking)
 
@@ -370,6 +372,19 @@ CHECK_FOR_WORKING_MS_ASYNC
 
 dnl Do we need getopt_long
 
+dnl even when including our own getopt implementation
+dnl we may want to make sure we use the external
+dnl defined by libc to not run into linker resolve trouble
+
+AC_CACHE_CHECK([for opterr], rd_cv_var_int_opterr,
+[AC_TRY_LINK([#include <unistd.h>],
+  [extern int opterr; opterr = 1;],
+  [rd_cv_var_int_opterr=yes],
+  [rd_cv_var_int_opterr=no])])
+if test x"$rd_cv_var_int_opterr" = x"yes"; then
+  AC_DEFINE(HAVE_INT_OPTERR, 1, [Define to 1 if you have the global variable 'int opterr'.])
+fi
+
 build_getopt=no
 RRD_GETOPT_LONG="LIBC_HAS_GETOPT_LONG"
 AC_CHECK_FUNC(getopt_long,[],[