From 49e3ffcbe267691dfbf24c91417aa296e7412146 Mon Sep 17 00:00:00 2001
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From: Fabrice Fontaine <fontaine.fabrice@gmail.com>
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Date: Sun, 29 Aug 2021 21:15:57 +0200
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Subject: [PATCH] configure.ac: also search libcrypt through pkg-config
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libxcrypt provides a libcrypt.pc file so use it if available as this
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will allow to retrieve the library path (e.g.
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-L/home/buildroot/output/host//riscv64-buildroot-linux-musl/sysroot/usr/lib)
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which is useful when cross-compiling and will avoid the following build
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failure on buildroot:
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/home/buildroot/autobuild/run/instance-3/output-1/host/opt/ext-toolchain/bin/../lib/gcc/riscv64-buildroot-linux-musl/10.2.0/../../../../riscv64-buildroot-linux-musl/bin/ld: .libs/passverify.o: in function `.L30':
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passverify.c:(.text+0x368): undefined reference to `crypt_checksalt'
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Fixes:
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- http://autobuild.buildroot.org/results/20b14e222b35c2d1269960075832b784ba81aa1a
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Signed-off-by: Fabrice Fontaine <fontaine.fabrice@gmail.com>
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[Retrieved from:
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https://github.com/linux-pam/linux-pam/commit/49e3ffcbe267691dfbf24c91417aa296e7412146]
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---
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configure.ac | 13 ++++++++++---
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1 file changed, 10 insertions(+), 3 deletions(-)
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diff --git a/configure.ac b/configure.ac
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index d464884c..c06bc7dd 100644
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--- a/configure.ac
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+++ b/configure.ac
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@@ -363,8 +363,14 @@ AC_CHECK_HEADERS(crypt.h)
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BACKUP_LIBS=$LIBS
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LIBCRYPT=""
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-AC_SEARCH_LIBS([crypt_gensalt_rn],[crypt])
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-case "$ac_cv_search_crypt_gensalt_rn" in
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+PKG_CHECK_MODULES([CRYPT], [libcrypt], [
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+ CFLAGS="$CFLAGS $CRYPT_CFLAGS"
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+ CPPFLAGS="$CPPFLAGS $CRYPT_CFLAGS"
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+ LIBS="$LIBS $CRYPT_LIBS"
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+ LIBCRYPT="$CRYPT_LIBS"
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+], [
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+ AC_SEARCH_LIBS([crypt_gensalt_rn],[crypt])
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+ case "$ac_cv_search_crypt_gensalt_rn" in
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-l*) LIBCRYPT="$ac_cv_search_crypt_gensalt_rn" ;;
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no) AC_SEARCH_LIBS([crypt_r],[crypt])
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case "$ac_cv_search_crypt_r" in
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@@ -374,7 +380,8 @@ case "$ac_cv_search_crypt_gensalt_rn" in
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-l*) LIBCRYPT="$ac_cv_search_crypt" ;;
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esac ;;
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esac ;;
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-esac
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+ esac
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+])
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AC_CHECK_FUNCS([crypt_r])
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LIBS=$BACKUP_LIBS
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AC_SUBST(LIBCRYPT)
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