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authorMike Frysinger <vapier@gentoo.org>2012-10-20 19:01:26 (GMT)
committer Mike Frysinger <vapier@gentoo.org>2012-10-20 19:01:26 (GMT)
commit5694afd72a0a424fcdd2ac85838229a1a86b7e84 (patch)
tree3b27a52db41b6774102953038d1cc809244d66f3
parent67dc7b21cae44627d0ee55aedb90e421f58ac9c9 (diff)
downloadbusybox-5694afd72a0a424fcdd2ac85838229a1a86b7e84.tar.gz
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build system: use pkg-config to look up selinux libs
Newer versions of libselinux has started linking against more libs. Rather than continuing hardcoding things, switch to using pkg-config to query for its dependencies. Signed-off-by: Mike Frysinger <vapier@gentoo.org>
-rw-r--r--Makefile1
-rw-r--r--Makefile.flags12
2 files changed, 12 insertions, 1 deletions
diff --git a/Makefile b/Makefile
index b2e9477..8995ff5 100644
--- a/Makefile
+++ b/Makefile
@@ -297,6 +297,7 @@ NM = $(CROSS_COMPILE)nm
STRIP = $(CROSS_COMPILE)strip
OBJCOPY = $(CROSS_COMPILE)objcopy
OBJDUMP = $(CROSS_COMPILE)objdump
+PKG_CONFIG ?= $(CROSS_COMPILE)pkg-config
AWK = awk
GENKSYMS = scripts/genksyms/genksyms
DEPMOD = /sbin/depmod
diff --git a/Makefile.flags b/Makefile.flags
index e77c0e5..307afa7 100644
--- a/Makefile.flags
+++ b/Makefile.flags
@@ -78,6 +78,12 @@ ARCH_FPIC ?= -fpic
ARCH_FPIE ?= -fpie
ARCH_PIE ?= -pie
+# Usage: $(eval $(call pkg_check_modules,VARIABLE-PREFIX,MODULES))
+define pkg_check_modules
+$(1)_CFLAGS := $(shell $(PKG_CONFIG) $(PKG_CONFIG_FLAGS) --cflags $(2))
+$(1)_LIBS := $(shell $(PKG_CONFIG) $(PKG_CONFIG_FLAGS) --libs $(2))
+endef
+
ifeq ($(CONFIG_BUILD_LIBBUSYBOX),y)
# on i386: 14% smaller libbusybox.so
# (code itself is 9% bigger, we save on relocs/PLT/GOT)
@@ -89,6 +95,7 @@ endif
ifeq ($(CONFIG_STATIC),y)
CFLAGS_busybox += -static
+PKG_CONFIG_FLAGS += --static
endif
ifeq ($(CONFIG_PIE),y)
@@ -131,7 +138,10 @@ LDLIBS += pam pam_misc pthread
endif
ifeq ($(CONFIG_SELINUX),y)
-LDLIBS += selinux sepol
+SELINUX_PC_MODULES = libselinux libsepol
+$(eval $(call pkg_check_modules,SELINUX,$(SELINUX_PC_MODULES)))
+CPPFLAGS += $(SELINUX_CFLAGS)
+LDLIBS += $(if $(SELINUX_LIBS),$(SELINUX_LIBS:-l%=%),$(SELINUX_PC_MODULES:lib%=%))
endif
ifeq ($(CONFIG_EFENCE),y)