Define _GNU_SOURCE in the math tests so that exp10 can be found.
Include <stdio.h> for the puts function in the __progname check.
Submitted upstream: <https://gitlab.com/gambas/gambas/-/merge_requests/286>
diff --git a/acinclude.m4 b/acinclude.m4
index 055cfd86b1102815..fe4f24b9f49cd1d7 100644
--- a/acinclude.m4
+++ b/acinclude.m4
@@ -558,6 +558,7 @@ AC_DEFUN([GB_CHECK_MATH_FUNC],
[
#define _ISOC9X_SOURCE 1
#define _ISOC99_SOURCE 1
+ #define _GNU_SOURCE 1
#define __USE_ISOC99 1
#define __USE_ISOC9X 1
#include <math.h>
diff --git a/gb.httpd/configure.ac b/gb.httpd/configure.ac
index 5fb0fa507ff89993..e8a3a9e3a4dfe8fb 100644
--- a/gb.httpd/configure.ac
+++ b/gb.httpd/configure.ac
@@ -28,7 +28,7 @@ dnl
AC_MSG_CHECKING(how to link static binaries)
AC_CACHE_VAL(ac_cv_lbl_static_flag,
ac_cv_lbl_static_flag=unknown
- echo 'main() {}' > conftest.c
+ echo 'int main() {}' > conftest.c
if test "$GCC" != yes ; then
trial_flag="-Bstatic"
test=`$CC $trial_flag -o conftest conftest.c 2>&1`
@@ -53,7 +53,7 @@ fi
AC_MSG_CHECKING(for __progname)
AC_CACHE_VAL(ac_cv_extern__progname,
- AC_TRY_LINK([],
+ AC_TRY_LINK([#include <stdio.h>],
[extern char *__progname;
puts(__progname)],
ac_cv_extern__progname=yes,