[linux-pam] Fix check for libtirpc and enhance check for libnsl to include new libnsl.

[kukuk]

commit 0a38830e0f7e60333141d2c95b4e9c06284dfed5
Author: Thorsten Kukuk <kukuk(a)thkukuk.de&gt;
Date:   Thu Mar 24 12:46:29 2016 +0100

    Fix check for libtirpc and enhance check for libnsl to include
    new libnsl.
    
    * configure.ac: fix setting of CFLAGS/LIBS, enhance libnsl check
    * modules/pam_unix/Makefile.am: replace NIS_* with TIRPC_* and NSL_*

 configure.ac                 |   21 +++++++++++----------
 modules/pam_unix/Makefile.am |    4 ++--
 2 files changed, 13 insertions(+), 12 deletions(-)
---
diff --git a/configure.ac b/configure.ac
index f33b959..a20c502 100644
--- a/configure.ac
+++ b/configure.ac
@@ -462,22 +462,26 @@ AC_SUBST(LIBDB)
 AM_CONDITIONAL([HAVE_LIBDB], [test ! -z "$LIBDB"])
 
 AC_ARG_ENABLE([nis],
-        AS_HELP_STRING([--disable-nis], [Disable building NIS/YP support in pam_unix and
pam_access]))
+        AS_HELP_STRING([--disable-nis], [Disable building NIS/YP support in pam_unix]))
 
 AS_IF([test "x$enable_nis" != "xno"], [
-  CFLAGS=$old_CFLAGS
-  LIBS=$old_LIBS
+  old_CFLAGS=$CFLAGS
+  old_LIBS=$LIBS
 
   dnl if there's libtirpc available, prefer that over the system
   dnl implementation.
-  PKG_CHECK_MODULES([libtirpc], [libtirpc], [
-    CFLAGS="$CFLAGS $libtirpc_CFLAGS"
-    LIBS="$LIBS $libtirpc_LIBS"
+  PKG_CHECK_MODULES([TIRPC], [libtirpc], [
+    CFLAGS="$CFLAGS $TIRPC_CFLAGS"
+    LIBS="$LIBS $TIRPC_LIBS"
   ], [:;])
 
-  AC_SEARCH_LIBS([yp_get_default_domain], [nsl])
+  PKG_CHECK_MODULES([NSL], [libnsl], [],
+   
[AC_CHECK_LIB([nsl],[yp_match],[NSL_LIBS="-lnsl"],[NSL_LIBS=""])])
+  CFLAGS="$CFLAGS $NSL_CFLAGS"
+  LIBS="$LIBS $NSL_LIBS"
 
   AC_CHECK_FUNCS([yp_get_default_domain yperr_string yp_master yp_bind yp_match
yp_unbind])
+  AC_CHECK_FUNCS([getrpcport rpcb_getaddr])
   AC_CHECK_HEADERS([rpc/rpc.h rpcsvc/ypclnt.h rpcsvc/yp_prot.h])
   AC_CHECK_DECLS([getrpcport], , , [
     #if HAVE_RPC_RPC_H
@@ -485,9 +489,6 @@ AS_IF([test "x$enable_nis" != "xno"], [
     #endif
   ])
 
-  NIS_CFLAGS="${CFLAGS%${old_CFLAGS}}"
-  NIS_LIBS="${LIBS%${old_LIBS}}"
-
   CFLAGS="$old_CFLAGS"
   LIBS="$old_LIBS"
 ])
diff --git a/modules/pam_unix/Makefile.am b/modules/pam_unix/Makefile.am
index 56ed591..88e6125 100644
--- a/modules/pam_unix/Makefile.am
+++ b/modules/pam_unix/Makefile.am
@@ -19,7 +19,7 @@ secureconfdir = $(SCONFIGDIR)
 AM_CFLAGS = -I$(top_srcdir)/libpam/include -I$(top_srcdir)/libpamc/include \
 	-DCHKPWD_HELPER=\"$(sbindir)/unix_chkpwd\" \
 	-DUPDATE_HELPER=\"$(sbindir)/unix_update\" \
-	$(NIS_CFLAGS)
+	@TIRPC_CFLAGS@ @NSL_CFLAGS@
 
 if HAVE_LIBSELINUX
   AM_CFLAGS += -D"WITH_SELINUX"
@@ -30,7 +30,7 @@ if HAVE_VERSIONING
   pam_unix_la_LDFLAGS += -Wl,--version-script=$(srcdir)/../modules.map
 endif
 pam_unix_la_LIBADD = $(top_builddir)/libpam/libpam.la \
-	@LIBCRYPT@ @LIBSELINUX@ $(NIS_LIBS)
+	@LIBCRYPT@ @LIBSELINUX@ @TIRPC_LIBS@ @NSL_LIBS@
 
 securelib_LTLIBRARIES = pam_unix.la