[oe] [PATCH v3] libcap2: fix build with and without libpam

[Andreas Oberritter]

* Add libpam to depends if DISTRO_FEATURES contains pam.

* Fixes the following compile error, when libpam-dev is installed
  on the host, but not built for the target:

pam_cap.c:19:34: error: security/pam_modules.h: No such file or directory
pam_cap.c:20:34: error: security/_pam_macros.h: No such file or directory

Signed-off-by: Andreas Oberritter <obi at opendreambox.org>
CC: Frans Meulenbroeks <fransmeulenbroeks at gmail.com>
CC: Otavio Salvador <otavio at ossystems.com.br>
CC: Tom Rini <tom_rini at mentor.com>
CC: Khem Raj <raj.khem at gmail.com>
---
v3: Use SYSTEM_HEADERS instead of STAGING_INCDIR.

 recipes/libcap/libcap2-2.16/make.patch |   18 ++++++++++++++----
 recipes/libcap/libcap2_2.16.bb         |    6 ++++--
 2 files changed, 18 insertions(+), 6 deletions(-)

diff --git a/recipes/libcap/libcap2-2.16/make.patch b/recipes/libcap/libcap2-2.16/make.patch
index 3672f77..b8508e4 100644
--- a/recipes/libcap/libcap2-2.16/make.patch
+++ b/recipes/libcap/libcap2-2.16/make.patch
@@ -1,6 +1,8 @@
---- libcap-2.16/Make.Rules.orig	2009-03-07 18:50:23.000000000 +0100
-+++ libcap-2.16/Make.Rules	2009-03-07 18:50:44.000000000 +0100
-@@ -45,19 +45,12 @@
+Index: libcap-2.16/Make.Rules
+===================================================================
+--- libcap-2.16.orig/Make.Rules	2008-12-04 08:03:30.000000000 +0100
++++ libcap-2.16/Make.Rules	2011-01-13 22:51:04.568844000 +0100
+@@ -45,25 +45,18 @@
  KERNEL_HEADERS := $(topdir)/libcap/include
  IPATH += -I$(topdir)/libcap/include -I$(KERNEL_HEADERS)
  
@@ -19,5 +21,13 @@
 -LD=$(CC) -Wl,-x -shared
 -LDFLAGS := #-g
  
- SYSTEM_HEADERS = /usr/include
+-SYSTEM_HEADERS = /usr/include
++SYSTEM_HEADERS ?= /usr/include
  INCS=$(topdir)/libcap/include/sys/capability.h
+ LDFLAGS += -L$(topdir)/libcap
+ CFLAGS += -Dlinux $(WARNINGS) $(DEBUG) $(IPATH)
+-PAM_CAP := $(shell if [ -f /usr/include/security/pam_modules.h ]; then echo yes ; else echo no ; fi)
++PAM_CAP := $(shell if [ -f $(SYSTEM_HEADERS)/security/pam_modules.h ]; then echo yes ; else echo no ; fi)
+ INDENT := $(shell if [ -n "$(which indent 2>/dev/null)" ]; then echo "| indent -kr" ; fi)
+ DYNAMIC := $(shell if [ ! -d "$(topdir)/.git" ]; then echo yes; fi)
+ LIBATTR := yes
diff --git a/recipes/libcap/libcap2_2.16.bb b/recipes/libcap/libcap2_2.16.bb
index 97b03d5..beb45f2 100644
--- a/recipes/libcap/libcap2_2.16.bb
+++ b/recipes/libcap/libcap2_2.16.bb
@@ -2,8 +2,8 @@ DESCRIPTION = "Libcap is a library for getting and setting POSIX.1e (formerly PO
 PRIORITY = "optional"
 SECTION = "libs"
 LICENSE = "GPL"
-DEPENDS = "bison-native flex-native attr"
-PR = "r2"
+DEPENDS = "bison-native flex-native attr ${@base_contains('DISTRO_FEATURES', 'pam', 'libpam', '', d)}"
+PR = "r3"
 
 BUILD_CFLAGS += "-I${S}/libcap/include"
 CFLAGS += "-I${S}/libcap/include"
@@ -15,6 +15,8 @@ SRC_URI = "${KERNELORG_MIRROR}/pub/linux/libs/security/linux-privs/libcap2/libca
 
 S = "${WORKDIR}/libcap-${PV}"
 
+EXTRA_OEMAKE = "SYSTEM_HEADERS=${STAGING_INCDIR}"
+
 do_install() {
 	install -d ${D}${includedir}/sys
 	install -m 0644 libcap/include/sys/capability.h ${D}${includedir}/sys/
-- 
1.7.2.3