[rpms/tin] epel10.2: Port configure script to C99 (#2155159)

[rpms/tin] epel10.2: Port configure script to C99 (#2155159)

[Florian Weimer]

            A new commit has been pushed.

            Repo   : rpms/tin
            Branch : epel10.2
            Commit : bbfb5a569a97cde8d4ca95f44979070ad2f57bd0
            Author : Florian Weimer <fweimer@redhat.com>
            Date   : 2022-12-20T10:02:23+01:00
            Stats  : +112/-1 in 2 file(s)
            URL    : https://src.fedoraproject.org/rpms/tin/c/bbfb5a569a97cde8d4ca95f44979070ad2f57bd0?branch=epel10.2

            Log:
            Port configure script to C99 (#2155159)

Related to:

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

---
diff --git a/tin-configure-c99.patch b/tin-configure-c99.patch
new file mode 100644
index 0000000..7732ef7
--- /dev/null
+++ b/tin-configure-c99.patch
@@ -0,0 +1,110 @@
+Add missing #include directives to pick up additional prototypes.
+Improves C99 compatibility.
+
+diff --git a/aclocal.m4 b/aclocal.m4
+index 009f04313c9c95ab..938adcfdf101e995 100644
+--- a/aclocal.m4
++++ b/aclocal.m4
+@@ -2165,8 +2165,17 @@ AC_MSG_CHECKING([if application can dump core])
+ AC_CACHE_VAL(cf_cv_corefile,[
+ 	AC_TRY_RUN([
+ #include <signal.h>
++#ifdef HAVE_STDLIB_H
++#include <stdlib.h>
++#endif
+ #include <sys/types.h>
+ #include <sys/stat.h>
++#ifdef HAVE_SYS_WAIT_H
++#include <sys/wait.h>
++#endif
++#ifdef HAVE_UNISTD_H
++#include <unistd.h>
++#endif
+ int found()
+ {
+ 	struct stat sb;
+@@ -3319,6 +3328,9 @@ AC_DEFUN([CF_FUNC_FORK],
+ [AC_MSG_CHECKING([for fork])
+ AC_CACHE_VAL(cf_cv_func_fork,[
+ AC_TRY_RUN([
++#ifdef HAVE_UNISTD_H
++#include <unistd.h>
++#endif
+ int main()
+ {
+ 	if (fork() < 0)
+@@ -3465,6 +3477,9 @@ AC_MSG_CHECKING(if the system function returns usable child-status)
+ AC_CACHE_VAL(cf_cv_system_status,[
+ 	AC_TRY_RUN([
+ #include <stdio.h>
++#ifdef HAVE_STDLIB_H
++#include <stdlib.h>
++#endif
+ #include <signal.h>
+ #if HAVE_SYS_WAIT_H
+ #include <sys/wait.h>
+@@ -3495,7 +3510,11 @@ int main()
+ ],
+ 	[cf_cv_system_status=no],
+ 	[AC_TRY_RUN(
+-	[int main() { ${cf_cv_main_return:-return}(system("exit 23") != (23 << 8)); }],
++	[
++#ifdef HAVE_STDLIB_H
++#include <stdlib.h>
++#endif
++int main() { ${cf_cv_main_return:-return}(system("exit 23") != (23 << 8)); }],
+ 	[cf_cv_system_status=yes],
+ 	[cf_cv_system_status=unknown],
+ 	[cf_cv_system_status=unknown])],
+diff --git a/configure b/configure
+index 7c988bb7eda53289..777362456568bb1f 100755
+--- a/configure
++++ b/configure
+@@ -26361,6 +26361,9 @@ else
+ #line 26361 "configure"
+ #include "confdefs.h"
+ 
++#ifdef HAVE_UNISTD_H
++#include <unistd.h>
++#endif
+ int main()
+ {
+ 	if (fork() < 0)
+@@ -27366,6 +27369,9 @@ else
+ #include "confdefs.h"
+ 
+ #include <stdio.h>
++#ifdef HAVE_STDLIB_H
++#include <stdlib.h>
++#endif
+ #include <signal.h>
+ #if HAVE_SYS_WAIT_H
+ #include <sys/wait.h>
+@@ -27417,6 +27423,9 @@ else
+   cat >"conftest.$ac_ext" <<_ACEOF
+ #line 27418 "configure"
+ #include "confdefs.h"
++#ifdef HAVE_STDLIB_H
++#include <stdlib.h>
++#endif
+ int main() { ${cf_cv_main_return:-return}(system("exit 23") != (23 << 8)); }
+ _ACEOF
+ rm -f "conftest$ac_exeext"
+@@ -27764,8 +27773,17 @@ else
+ #include "confdefs.h"
+ 
+ #include <signal.h>
++#ifdef HAVE_STDLIB_H
++#include <stdlib.h>
++#endif
+ #include <sys/types.h>
+ #include <sys/stat.h>
++#ifdef HAVE_SYS_WAIT_H
++#include <sys/wait.h>
++#endif
++#ifdef HAVE_UNISTD_H
++#include <unistd.h>
++#endif
+ int found()
+ {
+ 	struct stat sb;

diff --git a/tin.spec b/tin.spec
index 5972d02..6d46d70 100644
--- a/tin.spec
+++ b/tin.spec
@@ -7,6 +7,7 @@ URL: http://www.tin.org/
 Source0: ftp://ftp.tin.org/pub/news/clients/tin/stable/tin-%{version}.tar.xz
 Source1: ftp://ftp.tin.org/pub/news/clients/tin/stable/tin-%{version}.tar.xz.sign
 Source2: tin-pgp-key-0x5A49550EB490B4D1.txt
+Patch0: tin-configure-c99.patch
 BuildRequires: make
 BuildRequires: %{_bindir}/ispell
 BuildRequires:  gcc-c++
@@ -31,7 +32,7 @@ workring=${workdir}/keyring.gpg
 gpg1 --homedir=${workdir} --pgp2 --yes --output="${workring}" --dearmor %{S:2}
 gpg1 --homedir=${workdir} --pgp2 --verify --keyring="${workring}" %{S:1} %{S:0}
 rm -r ${workdir}
-%setup -q
+%autosetup -p1
 
 %build
 %configure \