commit: b19cd401cac635cbb6622bc442429cc9125b65bd
parent: 257266d6b1dac418589de3b53f6bef6f78a0ef06
author: Brian Callahan <bcallah@openbsd.org>
date: Fri, 4 Dec 2020 16:38:51 -0500
Add another check for -std=gnu99 for very old GCC compilers.
1 file changed, 29 insertions(+), 4 deletions(-)
diff --git a/configure b/configure
@@ -106,7 +106,7 @@ c99check() {
#include <stdio.h>
int main(void){long long l;for (int i=0;i<1;i++)printf("%s",__func__);return 0;}
EOF
- $cc $cflags -o conftest.o -c conftest.c > /dev/null 2>&1
+ $cc $cflags -std=c99 -o conftest.o -c conftest.c > /dev/null 2>&1
$cc $ldflags -o conftest conftest.o > /dev/null 2>&1
if [ $? -eq 0 ] ; then
rm -f conftest conftest.o conftest.c
@@ -295,6 +295,22 @@ EOF
fi
}
+gnu99check() {
+ cat << EOF > conftest.c
+#include <stdio.h>
+int main(void){long long l;for (int i=0;i<1;i++)printf("%s",__func__);return 0;}
+EOF
+ $cc $cflags -std=gnu99 -o conftest.o -c conftest.c > /dev/null 2>&1
+ $cc $ldflags -o conftest conftest.o > /dev/null 2>&1
+ if [ $? -eq 0 ] ; then
+ rm -f conftest conftest.o conftest.c
+ return 0
+ else
+ rm -f conftest conftest.o conftest.c
+ return 1
+ fi
+}
+
issetugidcheck() {
cat << EOF > conftest.c
#include <unistd.h>
@@ -870,13 +886,22 @@ c99check
if [ $? -ne 0 ] ; then
echo "no"
printf "checking if C compiler can compile C99 with -std=c99... "
- cflags="$cflags -std=c99"
+ cflags="$cflags"
c99check
if [ $? -ne 0 ] ; then
echo "no"
- echo "You must have a C99 compiler to build oksh!"
- exit 1
+ printf "checking if C compiler can compile C99 with -std=gnu99... "
+ gnu99check
+ if [ $? -ne 0 ] ; then
+ echo "no"
+ echo "You must have a C99 compiler to build oksh!"
+ exit 1
+ else
+ cflags="$cflags -std=gnu99"
+ echo "yes"
+ fi
else
+ cflags="$cflags -std=c99"
echo "yes"
fi
else
