[pygobject] build: Add --without-common configure option for package maintainers

[Patrick Welche <pwelche src gnome org>]

commit 15fdd827ce4bff847fb35c817c6ea2d3650eec00
Author: Patrick Welche <prlw1 cam ac uk>
Date:   Thu Jan 23 23:49:51 2014 +0000

    build: Add --without-common configure option for package maintainers
    
    https://bugzilla.gnome.org/show_bug.cgi?id=721646

 Makefile.am    |    2 ++
 configure.ac   |    7 +++++++
 gi/Makefile.am |    2 ++
 3 files changed, 11 insertions(+), 0 deletions(-)
---
diff --git a/Makefile.am b/Makefile.am
index 1ab1b63..ea0b4ba 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -80,9 +80,11 @@ all-local: build_pylinks
 
 check-local: build_pylinks
 
+if WITH_COMMON
 # pkg-config files
 pkgconfigdir = $(libdir)/pkgconfig
 pkgconfig_DATA = pygobject-$(PLATFORM_VERSION).pc
+endif
 
 # python
 pyexec_LTLIBRARIES =
diff --git a/configure.ac b/configure.ac
index d9e4661..93305f9 100644
--- a/configure.ac
+++ b/configure.ac
@@ -226,6 +226,13 @@ if test "$enable_cairo" != no; then
 fi
 AM_CONDITIONAL(ENABLE_CAIRO, test "$enable_cairo" = "yes")
 
+AC_ARG_WITH(common,
+    AS_HELP_STRING([--without-common],
+        [For package maintainers: do not install Python version independent files]),
+    with_common=$enableval,
+    with_common=yes)
+AM_CONDITIONAL(WITH_COMMON, test "$with_common" = "yes")
+
 INTROSPECTION_SCANNER=`$PKG_CONFIG --variable=g_ir_scanner gobject-introspection-1.0`
 INTROSPECTION_COMPILER=`$PKG_CONFIG --variable=g_ir_compiler gobject-introspection-1.0`
 
diff --git a/gi/Makefile.am b/gi/Makefile.am
index f1a79bd..fa1ce9a 100644
--- a/gi/Makefile.am
+++ b/gi/Makefile.am
@@ -26,7 +26,9 @@ extension_ldflags += \
 endif
 
 pkgincludedir = $(includedir)/pygobject-$(PLATFORM_VERSION)
+if WITH_COMMON
 pkginclude_HEADERS = pygobject.h
+endif
 
 pygidir = $(pyexecdir)/gi