[PATCH 2/4] tools: add pkg-config file for libxc

[Juergen Gross <jgross@suse.com>]

When configuring the build of qemu the configure script is building
various test programs to determine the exact version of libxencontrol.

Instead of a try and error approach needing updates for nearly each
new version of Xen just provide xencontrol.pc to be used via
pkg-config.

In the end we need two different variants of that file: one for the
target system where eventually someone wants to build qemu, and one
for the local system to be used for building qemu as part of the Xen
build process.

The local variant is created in a dedicated directory in order to be
able to collect more pkg-config files used for building tools there.

Signed-off-by: Juergen Gross <jgross@suse.com>
---
 .gitignore                   |  3 +++
 stubdom/Makefile             |  2 ++
 tools/Makefile               |  3 ++-
 tools/Rules.mk               | 13 +++++++++++++
 tools/libxc/Makefile         | 22 +++++++++++++++++++++-
 tools/libxc/xencontrol.pc.in |  9 +++++++++
 6 files changed, 50 insertions(+), 2 deletions(-)
 create mode 100644 tools/libxc/xencontrol.pc.in

diff --git a/.gitignore b/.gitignore
index 557b38e..bd9ac53 100644
--- a/.gitignore
+++ b/.gitignore
@@ -79,6 +79,7 @@ stubdom/newlib-1.*
 stubdom/newlib-x86*
 stubdom/ocaml-*
 stubdom/pciutils-*
+stubdom/pkg-config/*
 stubdom/polarssl-*
 stubdom/stubdompath.sh
 stubdom/tpm_emulator-*
@@ -179,6 +180,7 @@ tools/include/xen/*
 tools/include/xen-xsm/*
 tools/include/xen-foreign/*.(c|h|size)
 tools/include/xen-foreign/checker
+tools/libxc/*.pc
 tools/libxl/_libxl.api-for-check
 tools/libxl/*.api-ok
 tools/libxl/*.pc
@@ -204,6 +206,7 @@ tools/misc/xen-hvmctx
 tools/misc/xenlockprof
 tools/misc/lowmemd
 tools/misc/xencov
+tools/pkg-config/*
 tools/xentrace/xenalyze
 tools/pygrub/build/*
 tools/python/build/*
diff --git a/stubdom/Makefile b/stubdom/Makefile
index 39b81c9..c6458e8 100644
--- a/stubdom/Makefile
+++ b/stubdom/Makefile
@@ -318,6 +318,7 @@ define do_links
   cd $(dir $@); \
   ln -sf $(dir $<)include/*.h include/; \
   ln -sf $(dir $<)*.[ch] .; \
+  ln -sf $(dir $<)*.pc.in .; \
   ln -sf $(dir $<)Makefile .
   touch $@
 endef
@@ -623,6 +624,7 @@ clean:
 	rm -fr grub-$(XEN_TARGET_ARCH)
 	rm -f $(STUBDOMPATH)
 	rm -f *-minios-config.mk
+	rm -fr pkg-config
 	[ ! -e libs-$(XEN_TARGET_ARCH)/toollog/Makefile ] || $(MAKE) DESTDIR= -C libs-$(XEN_TARGET_ARCH)/toollog clean
 	[ ! -e libs-$(XEN_TARGET_ARCH)/evtchn/Makefile ] || $(MAKE) DESTDIR= -C libs-$(XEN_TARGET_ARCH)/evtchn clean
 	[ ! -e libs-$(XEN_TARGET_ARCH)/gnttab/Makefile ] || $(MAKE) DESTDIR= -C libs-$(XEN_TARGET_ARCH)/gnttab clean
diff --git a/tools/Makefile b/tools/Makefile
index 68633a4..9548ab4 100644
--- a/tools/Makefile
+++ b/tools/Makefile
@@ -111,9 +111,10 @@ uninstall:
 
 .PHONY: clean
 clean: subdirs-clean
+	rm -rf pkg-config
 
 .PHONY: distclean
-distclean: subdirs-distclean
+distclean: subdirs-distclean clean
 	rm -rf qemu-xen-traditional-dir qemu-xen-traditional-dir-remote
 	rm -rf qemu-xen-dir qemu-xen-dir-remote
 	rm -rf ../config/Tools.mk config.h config.log config.status \
diff --git a/tools/Rules.mk b/tools/Rules.mk
index 52bdd1a..e676c6b 100644
--- a/tools/Rules.mk
+++ b/tools/Rules.mk
@@ -245,3 +245,16 @@ ifeq (,$(findstring clean,$(MAKECMDGOALS)))
 $(XEN_ROOT)/config/Tools.mk:
 	$(error You have to run ./configure before building or installing the tools)
 endif
+
+$(PKG_CONFIG_DIR)/%.pc: %.pc.in Makefile
+	mkdir -p $(PKG_CONFIG_DIR)
+	@sed -e 's!@@version@@!$(PKG_CONFIG_VERSION)!g' \
+	     -e 's!@@prefix@@!$(PKG_CONFIG_PREFIX)!g' \
+	     -e 's!@@incdir@@!$(PKG_CONFIG_INCDIR)!g' \
+	     -e 's!@@libdir@@!$(PKG_CONFIG_LIBDIR)!g' < $< > $@
+
+%.pc: %.pc.in Makefile
+	@sed -e 's!@@version@@!$(PKG_CONFIG_VERSION)!g' \
+	     -e 's!@@prefix@@!$(PKG_CONFIG_PREFIX)!g' \
+	     -e 's!@@incdir@@!$(PKG_CONFIG_INCDIR)!g' \
+	     -e 's!@@libdir@@!$(PKG_CONFIG_LIBDIR)!g' < $< > $@
diff --git a/tools/libxc/Makefile b/tools/libxc/Makefile
index da689c4..a161ba7 100644
--- a/tools/libxc/Makefile
+++ b/tools/libxc/Makefile
@@ -1,4 +1,5 @@
 XEN_ROOT = $(CURDIR)/../..
+PKG_CONFIG_DIR = ../pkg-config
 include $(XEN_ROOT)/tools/Rules.mk
 
 MAJOR    = 4.9
@@ -159,6 +160,22 @@ endif
 $(CTRL_LIB_OBJS) $(GUEST_LIB_OBJS) \
 $(CTRL_PIC_OBJS) $(GUEST_PIC_OBJS): xc_private.h
 
+PKG_CONFIG := xencontrol.pc
+PKG_CONFIG_VERSION := $(MAJOR).$(MINOR)
+
+ifneq ($(CONFIG_LIBXC_MINIOS),y)
+PKG_CONFIG_INST := $(PKG_CONFIG)
+$(PKG_CONFIG_INST): PKG_CONFIG_PREFIX = $(prefix)
+$(PKG_CONFIG_INST): PKG_CONFIG_INCDIR = $(includedir)
+$(PKG_CONFIG_INST): PKG_CONFIG_LIBDIR = $(libdir)
+endif
+
+PKG_CONFIG_LOCAL := $(foreach pc,$(PKG_CONFIG),$(PKG_CONFIG_DIR)/$(pc))
+
+$(PKG_CONFIG_LOCAL): PKG_CONFIG_PREFIX = $(XEN_ROOT)
+$(PKG_CONFIG_LOCAL): PKG_CONFIG_INCDIR = $(XEN_LIBXC)/include
+$(PKG_CONFIG_LOCAL): PKG_CONFIG_LIBDIR = $(CURDIR)
+
 .PHONY: all
 all: build
 
@@ -167,12 +184,13 @@ build:
 	$(MAKE) libs
 
 .PHONY: libs
-libs: $(LIB)
+libs: $(LIB) $(PKG_CONFIG_INST) $(PKG_CONFIG_LOCAL)
 
 .PHONY: install
 install: build
 	$(INSTALL_DIR) $(DESTDIR)$(libdir)
 	$(INSTALL_DIR) $(DESTDIR)$(includedir)
+	$(INSTALL_DIR) $(DESTDIR)$(PKG_INSTALLDIR)
 	$(INSTALL_SHLIB) libxenctrl.so.$(MAJOR).$(MINOR) $(DESTDIR)$(libdir)
 	$(INSTALL_DATA) libxenctrl.a $(DESTDIR)$(libdir)
 	$(SYMLINK_SHLIB) libxenctrl.so.$(MAJOR).$(MINOR) $(DESTDIR)$(libdir)/libxenctrl.so.$(MAJOR)
@@ -183,6 +201,7 @@ install: build
 	$(SYMLINK_SHLIB) libxenguest.so.$(MAJOR).$(MINOR) $(DESTDIR)$(libdir)/libxenguest.so.$(MAJOR)
 	$(SYMLINK_SHLIB) libxenguest.so.$(MAJOR) $(DESTDIR)$(libdir)/libxenguest.so
 	$(INSTALL_DATA) include/xenguest.h $(DESTDIR)$(includedir)
+	$(INSTALL_DATA) xencontrol.pc $(DESTDIR)$(PKG_INSTALLDIR)
 
 .PHONY: TAGS
 TAGS:
@@ -192,6 +211,7 @@ TAGS:
 clean:
 	rm -rf *.rpm $(LIB) *~ $(DEPS) \
             _paths.h \
+	    xencontrol.pc \
             $(CTRL_LIB_OBJS) $(CTRL_PIC_OBJS) \
             $(GUEST_LIB_OBJS) $(GUEST_PIC_OBJS)
 
diff --git a/tools/libxc/xencontrol.pc.in b/tools/libxc/xencontrol.pc.in
new file mode 100644
index 0000000..213206f
--- /dev/null
+++ b/tools/libxc/xencontrol.pc.in
@@ -0,0 +1,9 @@
+prefix=@@prefix@@
+includedir=@@incdir@@
+libdir=@@libdir@@
+
+Name: Xencontrol
+Description: The Xencontrol library for Xen hypervisor
+Version: @@version@@
+Cflags: -I${includedir}
+Libs: -L${libdir} -lxenctrl
-- 
2.10.2


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