From 670a1ff8f97962efd6b27436b50fc51b62683c25 Mon Sep 17 00:00:00 2001 From: Samuel Thibault Date: Sun, 1 Sep 2019 17:25:49 +0200 Subject: Fix password checking with as-needed linking Newer gcc toolchains tend to enable as-needed by default, so runtime detection of libcrypt will fail. We can just explicitly link against libcrypt anyway. * configure.ac: Check for `crypt()' in libcrypt. * config.make.in: Substitute HAVE_LIBCRYPT. * libshouldbeinlibc/idvec-verify.c: Include only when libcrypt is available. Replace weak reference with explicit call and fallback macro. * utils/x.c: Likewise. * libshouldbeinlibc/Makefile (LDLIBS): Add -lcrypt when libcrypt is available. --- configure.ac | 5 +++++ 1 file changed, 5 insertions(+) (limited to 'configure.ac') diff --git a/configure.ac b/configure.ac index e8bdc46a..d0d03e8d 100644 --- a/configure.ac +++ b/configure.ac @@ -170,6 +170,11 @@ AC_CHECK_FUNCS(file_futimens) AC_DEFINE([UTIME_NOW],[-1]) AC_DEFINE([UTIME_OMIT],[-2]) +AC_CHECK_LIB([crypt], [crypt], + [HAVE_LIBCRYPT=1 + AC_DEFINE([HAVE_LIBCRYPT], [1], [Use libcrypt])]) +AC_SUBST([HAVE_LIBCRYPT]) + # From glibc HEAD, 2007-11-07. AC_CACHE_CHECK(for -fgnu89-inline, libc_cv_gnu89_inline, [dnl -- cgit v1.2.3