From dc262b45ae8c63be64fa38c7db0296e0d3889895 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Petr=20P=C3=ADsa=C5=99?= <ppisar@redhat.com>
Date: Wed, 7 Jun 2023 17:30:18 +0200
Subject: [PATCH] Port to C99
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

Port the ccc build configuration detection tool to C99 by
specifying the return type of main as int.

Submitted upstream:

  <https://groups.google.com/g/lp_solve/c/WjVf0dxrwfQ/m/rKMwf57tAwAJ>

Signed-off-by: Petr Písař <ppisar@redhat.com>
---
 bfp/bfp_LUSOL/ccc | 2 +-
 lp_solve/ccc      | 4 ++--
 lpsolve55/ccc     | 4 ++--
 3 files changed, 5 insertions(+), 5 deletions(-)

diff --git a/bfp/bfp_LUSOL/ccc b/bfp/bfp_LUSOL/ccc
index 86b274c..a349345 100644
--- a/bfp/bfp_LUSOL/ccc
+++ b/bfp/bfp_LUSOL/ccc
@@ -7,7 +7,7 @@ c=${CC:-cc}
 >/tmp/platform.c
 echo '#include <stdlib.h>'>>/tmp/platform.c
 echo '#include <stdio.h>'>>/tmp/platform.c
-echo 'main(){printf("ux%d", (int) (sizeof(void *)*8));}'>>/tmp/platform.c
+echo 'int main(void){printf("ux%d", (int) (sizeof(void *)*8));}'>>/tmp/platform.c
 $c $CFLAGS /tmp/platform.c $LDFLAGS -o /tmp/platform
 PLATFORM=`/tmp/platform`
 rm /tmp/platform /tmp/platform.c >/dev/null 2>&1
diff --git a/lp_solve/ccc b/lp_solve/ccc
index 83f21df..2e99f39 100644
--- a/lp_solve/ccc
+++ b/lp_solve/ccc
@@ -8,7 +8,7 @@ MYTMP=`mktemp -d "${TMPDIR:-/tmp}"/lp_solve_XXXXXX`
 >"$MYTMP"/platform.c
 echo '#include <stdlib.h>'>>"$MYTMP"/platform.c
 echo '#include <stdio.h>'>>"$MYTMP"/platform.c
-echo 'main(){printf("ux%d", (int) (sizeof(void *)*8));}'>>"$MYTMP"/platform.c
+echo 'int main(void){printf("ux%d", (int) (sizeof(void *)*8));}'>>"$MYTMP"/platform.c
 $c $CFLAGS "$MYTMP"/platform.c $LDFLAGS -o "$MYTMP"/platform
 PLATFORM=`"$MYTMP"/platform`
 rm "$MYTMP"/platform "$MYTMP"/platform.c >/dev/null 2>&1
@@ -22,7 +22,7 @@ math=-lm
 echo '#include <stdio.h>'>>"$MYTMP"/isnan.c
 echo '#include <stdlib.h>'>>"$MYTMP"/isnan.c
 echo '#include <math.h>'>>"$MYTMP"/isnan.c
-echo 'main(){isnan(0.0);return 0;}'>>"$MYTMP"/isnan.c
+echo 'int main(void){isnan(0.0);return 0;}'>>"$MYTMP"/isnan.c
 $c $CFLAGS "$MYTMP"/isnan.c $LDFLAGS -o "$MYTMP"/isnan $math >/dev/null 2>&1
 if [ $? = 0 ]
 then NOISNAN=
diff --git a/lpsolve55/ccc b/lpsolve55/ccc
index 49cd7dc..59c720f 100644
--- a/lpsolve55/ccc
+++ b/lpsolve55/ccc
@@ -8,7 +8,7 @@ MYTMP=`mktemp -d "${TMPDIR:-/tmp}"/lp_solve_XXXXXX`
 >"$MYTMP"/platform.c
 echo '#include <stdlib.h>'>>"$MYTMP"/platform.c
 echo '#include <stdio.h>'>>"$MYTMP"/platform.c
-echo 'main(){printf("ux%d", (int) (sizeof(void *)*8));}'>>"$MYTMP"/platform.c
+echo 'int main(void){printf("ux%d", (int) (sizeof(void *)*8));}'>>"$MYTMP"/platform.c
 $c $CFLAGS "$MYTMP"/platform.c $LDFLAGS -o "$MYTMP"/platform
 PLATFORM=`"$MYTMP"/platform`
 rm "$MYTMP"/platform "$MYTMP"/platform.c >/dev/null 2>&1
@@ -20,7 +20,7 @@ mkdir bin bin/$PLATFORM >/dev/null 2>&1
 echo '#include <stdio.h>'>>"$MYTMP"/isnan.c
 echo '#include <stdlib.h>'>>"$MYTMP"/isnan.c
 echo '#include <math.h>'>>"$MYTMP"/isnan.c
-echo 'main(){isnan(0.0);return 0;}'>>"$MYTMP"/isnan.c
+echo 'int main(void){isnan(0.0);return 0;}'>>"$MYTMP"/isnan.c
 $c $CFLAGS "$MYTMP"/isnan.c $LDFLAGS -o "$MYTMP"/isnan $math >/dev/null 2>&1
 if [ $? = 0 ]
 then NOISNAN=
-- 
2.40.1