From 6c06c23c21d48a94febb03cbbfb4ef09dcddebc1 Mon Sep 17 00:00:00 2001
From: Andy Wingo <wingo@pobox.com>
Date: Wed, 26 Aug 2015 23:19:06 +0200
Subject: Add --with-libcap option

* configure.ac: Add --with-libcap option.
* Makefile.am (libelogind_shared_la_LDFLAGS): Add CAP_LDFLAGS.
---
 Makefile.am  | 3 +++
 configure.ac | 7 +++++++
 2 files changed, 10 insertions(+)

diff --git a/Makefile.am b/Makefile.am
index bb4885d47..84e15e9e5 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -503,6 +503,9 @@ libelogind_shared_la_LIBADD = \
 	$(CAP_LIBS) \
 	-lm
 
+libelogind_shared_la_LDFLAGS = \
+	$(CAP_LDFLAGS)
+
 # ------------------------------------------------------------------------------
 if HAVE_ACL
 noinst_LTLIBRARIES += \
diff --git a/configure.ac b/configure.ac
index 54b533004..16e034370 100644
--- a/configure.ac
+++ b/configure.ac
@@ -234,11 +234,18 @@ AC_CHECK_HEADERS([linux/memfd.h], [], [])
 # unconditionally pull-in librt with old glibc versions
 AC_SEARCH_LIBS([clock_gettime], [rt], [], [])
 
+AC_ARG_WITH([libcap],
+            AS_HELP_STRING([--with-libcap=DIR], [Prefix for libcap]),
+            [CAP_LDFLAGS="-L$with_libcap/lib"],
+            [CAP_LDFLAGS=""])
 save_LIBS="$LIBS"
 LIBS=
+LDFLAGS="$LDFLAGS $CAP_LDFLAGS"
 AC_SEARCH_LIBS([cap_init], [cap], [], [AC_MSG_ERROR([*** POSIX caps library not found])])
 CAP_LIBS="$LIBS"
 AC_SUBST(CAP_LIBS)
+AC_SUBST(CAP_LDFLAGS)
+LDFLAGS="$save_LDFLAGS"
 
 AC_CHECK_FUNCS([memfd_create])
 AC_CHECK_FUNCS([__secure_getenv secure_getenv])
-- 
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