From e7c2a0e98b6ddb91ba109b53644aed4b9b89123d Mon Sep 17 00:00:00 2001
From: John Mark Bell <jmb@netsurf-browser.org>
Date: Tue, 31 Mar 2009 15:07:40 +0000
Subject: Allow required packages to be constructed based upon the build
 configuration

svn path=/trunk/tools/buildsystem/; revision=7014
---
 makefiles/Makefile.top | 10 ++++++++++
 1 file changed, 10 insertions(+)

(limited to 'makefiles/Makefile.top')

diff --git a/makefiles/Makefile.top b/makefiles/Makefile.top
index 34f79ad..4b4b291 100644
--- a/makefiles/Makefile.top
+++ b/makefiles/Makefile.top
@@ -24,6 +24,7 @@
 # HOST			Host platform identifier
 # PREFIX		Absolute installation path prefix 
 # 				(defaults to /usr/local)
+# REQUIRED_PKGS		List of required pkg-config packages
 #
 # The client may also override all toolchain settings, including:
 #
@@ -216,9 +217,18 @@ distclean: clean
 #
 # We also permit a trailing ';' in the file list.
 
+__comma := ,
+__empty := 
+__space := $(empty) $(empty)
+__required = $(subst $(__space),$(__comma) ,$(strip $(REQUIRED_PKGS)))
+
 # Install a pkg-config control file ($1) to the specified location ($2)
 define install_pkgconfig
 	$(Q)$(SED) -e 's#PREFIX#$(PREFIX)#' $1 >$(BUILDDIR)/$(1:.in=)
+  $(if $(REQUIRED_PKGS), \
+	$(Q)$(SED) -i -e 's#REQUIRED#Requires: $(__required)#' \
+		$(BUILDDIR)/$(1:.in=), \
+	$(Q)$(SED) -i -e 's#REQUIRED##' $(BUILDDIR)/$(1:.in=))
 	$(INSTALL) $(INSTALLFLAGS) -m 644 $(BUILDDIR)/$(1:.in=) $2
 
 endef
-- 
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