68 lines
2.0 KiB
Diff
68 lines
2.0 KiB
Diff
From b1cec5003b73080a8aa7ea277621bf1c71c3e8d6 Mon Sep 17 00:00:00 2001
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From: Mike Frysinger <vapier@gentoo.org>
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Date: Sat, 20 Oct 2012 15:01:26 -0400
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Subject: [PATCH] build system: use pkg-config to look up selinux libs
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Newer versions of libselinux has started linking against more libs.
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Rather than continuing hardcoding things, switch to using pkg-config
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to query for its dependencies.
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Signed-off-by: Mike Frysinger <vapier@gentoo.org>
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---
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Makefile | 1 +
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Makefile.flags | 12 +++++++++++-
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2 files changed, 12 insertions(+), 1 deletion(-)
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diff --git a/Makefile b/Makefile
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index fccde4a..3a0a5e1 100644
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--- a/Makefile
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+++ b/Makefile
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@@ -297,6 +297,7 @@ NM = $(CROSS_COMPILE)nm
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STRIP = $(CROSS_COMPILE)strip
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OBJCOPY = $(CROSS_COMPILE)objcopy
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OBJDUMP = $(CROSS_COMPILE)objdump
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+PKG_CONFIG ?= $(CROSS_COMPILE)pkg-config
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AWK = awk
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GENKSYMS = scripts/genksyms/genksyms
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DEPMOD = /sbin/depmod
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diff --git a/Makefile.flags b/Makefile.flags
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index c43c8dc..15dcc1f 100644
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--- a/Makefile.flags
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+++ b/Makefile.flags
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@@ -74,6 +74,12 @@ ARCH_FPIC ?= -fpic
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ARCH_FPIE ?= -fpie
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ARCH_PIE ?= -pie
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+# Usage: $(eval $(call pkg_check_modules,VARIABLE-PREFIX,MODULES))
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+define pkg_check_modules
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+$(1)_CFLAGS := $(shell $(PKG_CONFIG) $(PKG_CONFIG_FLAGS) --cflags $(2))
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+$(1)_LIBS := $(shell $(PKG_CONFIG) $(PKG_CONFIG_FLAGS) --libs $(2))
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+endef
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+
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ifeq ($(CONFIG_BUILD_LIBBUSYBOX),y)
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# on i386: 14% smaller libbusybox.so
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# (code itself is 9% bigger, we save on relocs/PLT/GOT)
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@@ -85,6 +91,7 @@ endif
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ifeq ($(CONFIG_STATIC),y)
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CFLAGS_busybox += -static
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+PKG_CONFIG_FLAGS += --static
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endif
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ifeq ($(CONFIG_PIE),y)
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@@ -127,7 +134,10 @@ LDLIBS += pam pam_misc pthread
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endif
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ifeq ($(CONFIG_SELINUX),y)
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-LDLIBS += selinux sepol
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+SELINUX_PC_MODULES = libselinux libsepol
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+$(eval $(call pkg_check_modules,SELINUX,$(SELINUX_PC_MODULES)))
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+CPPFLAGS += $(SELINUX_CFLAGS)
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+LDLIBS += $(if $(SELINUX_LIBS),$(SELINUX_LIBS:-l%=%),$(SELINUX_PC_MODULES:lib%=%))
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endif
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ifeq ($(CONFIG_EFENCE),y)
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--
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1.7.12
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