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https://github.com/madler/zlib/pull/599
Rebased version of:
From 37c9730ba474d274f4cc6a974943eef95087b9f6 Mon Sep 17 00:00:00 2001
From: Khem Raj <raj.khem@gmail.com>
Date: Tue, 8 Mar 2022 22:38:47 -0800
Subject: [PATCH] configure: Pass LDFLAGS to link tests
LDFLAGS can contain critical flags without which linking wont succeed
therefore ensure that all configure tests involving link time checks are
using LDFLAGS on compiler commandline along with CFLAGS to ensure the
tests perform correctly. Without this some tests may fail resulting in
wrong confgure result, ending in miscompiling the package
Signed-off-by: Khem Raj <raj.khem@gmail.com>
--- a/configure
+++ b/configure
@@ -436,7 +436,7 @@ if test $shared -eq 1; then
echo Checking for shared library support... | tee -a configure.log
# we must test in two steps (cc then ld), required at least on SunOS 4.x
if try $CC -w -c $SFLAGS $test.c &&
- try $LDSHARED $SFLAGS -o $test$shared_ext $test.o; then
+ try $LDSHARED $SFLAGS $LDFLAGS -o $test$shared_ext $test.o; then
echo Building shared library $SHAREDLIBV with $CC. | tee -a configure.log
elif test -z "$old_cc" -a -z "$old_cflags"; then
echo No shared library support. | tee -a configure.log
@@ -498,7 +498,7 @@ int main(void) {
}
EOF
fi
- if try $CC $CFLAGS -o $test $test.c; then
+ if try $CC $CFLAGS $LDFLAGS -o $test $test.c; then
sizet=`./$test`
echo "Checking for a pointer-size integer type..." $sizet"." | tee -a configure.log
CFLAGS="${CFLAGS} -DNO_SIZE_T=${sizet}"
@@ -532,7 +532,7 @@ int main(void) {
return 0;
}
EOF
- if try $CC $CFLAGS -o $test $test.c; then
+ if try $CC $CFLAGS $LDFLAGS -o $test $test.c; then
echo "Checking for fseeko... Yes." | tee -a configure.log
else
CFLAGS="${CFLAGS} -DNO_FSEEKO"
@@ -549,7 +549,7 @@ cat > $test.c <<EOF
#include <errno.h>
int main() { return strlen(strerror(errno)); }
EOF
-if try $CC $CFLAGS -o $test $test.c; then
+if try $CC $CFLAGS $LDFLAGS -o $test $test.c; then
echo "Checking for strerror... Yes." | tee -a configure.log
else
CFLAGS="${CFLAGS} -DNO_STRERROR"
@@ -656,7 +656,7 @@ int main()
return (mytest("Hello%d\n", 1));
}
EOF
- if try $CC $CFLAGS -o $test $test.c; then
+ if try $CC $CFLAGS $LDFLAGS -o $test $test.c; then
echo "Checking for vsnprintf() in stdio.h... Yes." | tee -a configure.log
echo >> configure.log
@@ -746,7 +746,7 @@ int main()
}
EOF
- if try $CC $CFLAGS -o $test $test.c; then
+ if try $CC $CFLAGS $LDFLAGS -o $test $test.c; then
echo "Checking for snprintf() in stdio.h... Yes." | tee -a configure.log
echo >> configure.log
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