From 6ac65840c0f3ec86aaddf914bd59f79d62ce4200 Mon Sep 17 00:00:00 2001
From: Philippe Pepiot <phil@philpep.org>
Date: Thu, 11 Nov 2010 17:13:34 +0100
Subject: [PATCH] BuildSystem: pkg-config optional

---
 BSDmakefile | 13 +++++++++----
 Makefile    | 18 +++++++++++++-----
 config.mk   | 11 +++++++++++
 3 files changed, 33 insertions(+), 9 deletions(-)

diff --git a/BSDmakefile b/BSDmakefile
index 6b17ea0..99cfb82 100644
--- a/BSDmakefile
+++ b/BSDmakefile
@@ -10,11 +10,16 @@ CFLAGS+= -DHAVE_${lib:U}
 .endif
 .endfor
 
-CFLAGS_LIB!= pkg-config --cflags-only-I ${LIBS}
-LDFLAGS_LIB!= pkg-config --libs ${LIBS}
+.if !defined(CFLAGS_LIBS)
+CFLAGS_LIBS!= pkg-config --cflags-only-I ${LIBS}
+.endif
 
-CFLAGS+= ${CFLAGS_LIB}
-LDADD+= ${LDFLAGS_LIB} -lpthread
+.if !defined(LDFLAGS_LIBS)
+LDFLAGS_LIBS!= pkg-config --libs ${LIBS}
+.endif
+
+CFLAGS+= ${CFLAGS_LIBS}
+LDADD+= ${LDFLAGS_LIBS} -lpthread
 
 install: all
 	@echo installing executable file to ${DESTDIR}${PREFIX}/bin
diff --git a/Makefile b/Makefile
index 057b563..c3086c4 100644
--- a/Makefile
+++ b/Makefile
@@ -4,19 +4,27 @@ include common.mk
 OBJ = ${patsubst %.c,${O}/%.o,${SRCS}}
 
 ifneq ($(findstring xrandr, ${LIBS}),)
-	CFLAGS+= -DHAVE_XRANDR
+CFLAGS+= -DHAVE_XRANDR
 endif
 
 ifneq ($(findstring xinerama, ${LIBS}),)
-	CFLAGS+= -DHAVE_XINERAMA
+CFLAGS+= -DHAVE_XINERAMA
 endif
 
 ifneq ($(findstring imlib2, ${LIBS}),)
-	CFLAGS+= -DHAVE_IMLIB2
+CFLAGS+= -DHAVE_IMLIB2
 endif
 
-CFLAGS+= $(shell pkg-config --cflags-only-I ${LIBS})
-LDFLAGS+= $(shell pkg-config --libs ${LIBS}) -lpthread
+ifndef CFLAGS_LIBS
+CFLAGS_LIBS= $(shell pkg-config --cflags-only-I ${LIBS})
+endif
+
+ifndef LDFLAGS_LIBS
+LDFLAGS_LIBS= $(shell pkg-config --libs ${LIBS})
+endif
+
+CFLAGS+= ${CFLAGS_LIBS}
+LDFLAGS+= ${LDFLAGS_LIBS} -lpthread
 
 all: options ${O}/wmfs ${O}/wmfs.1.gz
 
diff --git a/config.mk b/config.mk
index 4ccc8d1..c72f8e7 100644
--- a/config.mk
+++ b/config.mk
@@ -5,6 +5,17 @@ VERSION= 201011
 # x11 xft and freetype2 are REQUIRED, others are optionals
 LIBS= x11 xft freetype2 xrandr xinerama imlib2
 
+
+# If theses variables are defined, make will not call pkg-config
+#
+# Linux example
+# CFLAGS_LIBS= -I/usr/include/freetype2
+# LDFLAGS_LIBS= -lX11 -lXft -lfreetype -lXrandr -lXinerama -lImlib2
+#
+# FreeBSD example
+# CFLAGS_LIBS= -I/usr/local/include -I/usr/local/include/freetype2
+# LDFLAGS_LIBS= -L/usr/local/lib -lXft -lXrender -lfontconfig -lX11 -lfreetype -lXrandr -lXinerama -lImlib2
+
 # paths
 PREFIX= /usr/local
 MANPREFIX= ${PREFIX}/share/man