From 722eb978a682aa3adfb481d5c883c76d02124a86 Mon Sep 17 00:00:00 2001
From: Florian Weimer <fweimer@redhat.com>
Date: Jan 02 2023 07:22:58 +0000
Subject: C99 compatibility fixes for the configure scripts


Related to:

  <https://fedoraproject.org/wiki/Changes/PortingToModernC>
  <https://fedoraproject.org/wiki/Toolchain/PortingToModernC>

---

diff --git a/gambas3-configure-c99.patch b/gambas3-configure-c99.patch
new file mode 100644
index 0000000..ccd7c63
--- /dev/null
+++ b/gambas3-configure-c99.patch
@@ -0,0 +1,39 @@
+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,
diff --git a/gambas3.spec b/gambas3.spec
index 783e758..9fb24db 100644
--- a/gambas3.spec
+++ b/gambas3.spec
@@ -14,7 +14,7 @@
 Name:		gambas3
 Summary:	IDE based on a basic interpreter with object extensions
 Version:	3.17.3
-Release:	5%{?dist}
+Release:	6%{?dist}
 License:	GPL+
 URL:		http://gambas.sourceforge.net/
 Source0:	https://gitlab.com/gambas/gambas/-/archive/%{version}/gambas-%{version}.tar.bz2
@@ -65,6 +65,7 @@ Patch1:		%{name}-3.12.2-nolintl.patch
 Patch2:		%{name}-3.12.2-noliconv.patch
 Patch5:		%{name}-3.14.1-gst1.patch
 Patch6:		gambas-3.17.3-force-pcre2.patch
+Patch7:		gambas3-configure-c99.patch
 
 %description
 Gambas3 is a free development environment based on a Basic interpreter
@@ -1019,6 +1020,7 @@ Requires:	%{name}-gb-xml = %{version}-%{release}
 %patch2 -p1 -b .noliconv
 %patch5 -p1 -b .gst1
 %patch6 -p1 -b .force-pcre2
+%patch7 -p1
 for i in `find . |grep acinclude.m4`; do
 	sed -i 's|$AM_CFLAGS -O3|$AM_CFLAGS|g' $i
 	sed -i 's|$AM_CXXFLAGS -Os -fno-omit-frame-pointer|$AM_CXXFLAGS|g' $i
@@ -1764,6 +1766,9 @@ install -m 0644 -p main/mime/application-x-gambas3.xml %{buildroot}%{_datadir}/m
 %{_datadir}/%{name}/info/gb.xml.xslt.*
 
 %changelog
+* Mon Jan 02 2023 Florian Weimer <fweimer@redhat.com> - 3.17.3-6
+- C99 compatibility fixes for the configure scripts
+
 * Wed Nov 16 2022 Ondřej Sloup <osloup@redhat.com> - 3.17.3-5
 - Rebuild for new PostgreSQL 15