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From 637cc045ee464909c261d6fa16c71ed15cd455e3 Mon Sep 17 00:00:00 2001
From: Alex Xu <351006+Hello71@users.noreply.github.com>
Date: Wed, 16 Jun 2021 13:58:25 +0000
Subject: [PATCH] build-sys: Update configure.ac
1. the test incorrectly used AC_COMPILE_IFELSE instead of
AC_LINK_IFELSE, defeating the purpose of checking -lcrypt.
2. the test did not properly restore LIBS, causing later checks to all
fail if libcrypt wasn't found.
3. HAVE_LIBCRYPT only controls whether to use -lcrypt, it is not
needed or used in any source files.
[kzak@redhat.com: - improve commit message
- use UL_{SET,RESTORE}_FLAGS() rather than directly
modify $LIBS]
Signed-off-by: Karel Zak <kzak@redhat.com>
---
configure.ac | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)
diff --git a/configure.ac b/configure.ac
index 5181d524c..939c6d2d3 100644
--- a/configure.ac
+++ b/configure.ac
@@ -845,8 +845,8 @@ char *c = crypt("abc","pw");
have_libcrypt=no
have_crypt=yes
],[
- LIBS="$LIBS -lcrypt"
- AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
+ UL_SET_FLAGS([], [], [-lcrypt])
+ AC_LINK_IFELSE([AC_LANG_PROGRAM([[
#ifdef HAVE_CRYPT_H
#include <crypt.h>
#else
@@ -856,12 +856,12 @@ char *c = crypt("abc","pw");
]], [[
char *c = crypt("abc","pw");
]])],[
- AC_DEFINE([HAVE_LIBCRYPT], [1], [Do we need -lcrypt?])
have_libcrypt=yes
have_crypt=yes
],[
AC_MSG_WARN([crypt() is not available])
])
+ UL_RESTORE_FLAGS
])
AM_CONDITIONAL([HAVE_LIBCRYPT], [test "x$have_libcrypt" = xyes])
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