keyutils: handle non-linux platform

Signed-off-by: Noah Watkins <noahwatkins@gmail.com>

configure.ac

@@ -168,10 +168,14 @@ if test x"$resolv_libs" != "xok"; then
 fi
 AC_SUBST([RESOLV_LIBS])
 
+dnl check for libkeyutils on linux
+KEYUTILS_LIB=""
+AS_IF([test x"$linux" = x"yes"], [
+  AC_CHECK_LIB([keyutils], [add_key], [KEYUTILS_LIB="-lkeyutils"], [
+    AC_MSG_FAILURE([libkeyutils not found])])])
+AC_SUBST(KEYUTILS_LIB)
+
 AC_CHECK_LIB([m], [pow], [true], AC_MSG_FAILURE([libm not found]))
-if test x"$linux" = x"yes"; then
-	AC_CHECK_LIB([keyutils], [add_key], [true], AC_MSG_FAILURE([libkeyutils not found]))
-fi
 AC_CHECK_FUNCS([syncfs], AC_DEFINE([HAVE_SYS_SYNCFS], [1], [we have syncfs]), [])
 
 # Find some crypto library for us to use, while letting user to decide which one to use.

src/Makefile-env.am

@@ -116,7 +116,7 @@ AM_CCASFLAGS = -f elf64
 #####################
 ## library definitions and dependencies
 
-EXTRALIBS = -luuid -lm -lkeyutils
+EXTRALIBS = -luuid -lm $(KEYUTILS_LIB)
 if FREEBSD
 EXTRALIBS += -lexecinfo
 endif # FREEBSD

src/common/Makefile.am

@@ -112,7 +112,7 @@ noinst_HEADERS += \
 LIBCOMMON_DEPS += \
 	$(LIBMSG) $(LIBAUTH) \
 	$(LIBCRUSH) $(LIBJSON_SPIRIT) $(LIBLOG) $(LIBARCH) \
-	-lkeyutils
+	$(KEYUTILS_LIB)
 
 if LINUX
 LIBCOMMON_DEPS += -lrt