[gnome-builder] scripting: make gjs/pygobject optional

[Christian Hergert <chergert src gnome org>]

commit 861ac35aa14ebe84a7d7bcf79c65bf93e991b55b
Author: Christian Hergert <christian hergert me>
Date:   Tue Sep 1 00:40:18 2015 -0700

    scripting: make gjs/pygobject optional
    
    If we fail to locate what we need for gjs or pygobject scripting,
    simply report failure to enable those features in configure output.

 configure.ac       |   36 ++++++++++++++++++++++++++++++------
 libide/Makefile.am |   28 ++++++++++++++++++++++------
 libide/ide.c       |   14 ++++++++++++--
 3 files changed, 64 insertions(+), 14 deletions(-)
---
diff --git a/configure.ac b/configure.ac
index 2f6e11d..29bd26f 100644
--- a/configure.ac
+++ b/configure.ac
@@ -188,6 +188,13 @@ PKG_CHECK_MODULES(NAUTILUS, [glib-2.0 >= glib_required_version
                              gtk+-3.0 >= gtk_required_version])
 PKG_CHECK_MODULES(XML,      [gio-2.0 >= glib_required_version
                              libxml-2.0 >= libxml_required_version])
+PKG_CHECK_MODULES(PYGOBJECT,[pygobject-3.0 >= pygobject_required_version],
+                            [have_pygobject=yes],
+                            [have_pygobject=no])
+PKG_CHECK_MODULES(GJS,      [gjs-1.0 >= gjs_required_version
+                             gjs-internals-1.0 >= gjs_required_version],
+                            [enable_gjs_scripting=yes],
+                            [enable_gjs_scripting=no])
 
 
 dnl ***********************************************************************
@@ -248,13 +255,25 @@ CPPFLAGS=${CPPFLAGS_SAVE}
 dnl ***********************************************************************
 dnl Check for Required Python
 dnl ***********************************************************************
-AC_PATH_TOOL(PYTHON3_CONFIG, "python3-config")
-AS_IF([test -z "${PYTHON3_CONFIG}"],[
-  AC_MSG_ERROR([Failed to locate python3-config.])
+enable_python_scripting=no
+AS_IF([test "x$have_pygobject" = "xyes"],[
+       AC_PATH_TOOL(PYTHON3_CONFIG, "python3-config")
+       AS_IF([test -z "${PYTHON3_CONFIG}"],[
+               AC_MSG_RESULT([Failed to locate python3-config.])
+       ],[
+               LIBIDE_CFLAGS="${LIBIDE_CFLAGS} `${PYTHON3_CONFIG} --includes`"
+               LIBIDE_LIBS="${LIBIDE_LIBS} `${PYTHON3_CONFIG} --libs`"
+               LIBIDE_LDFLAGS="${LIBIDE_LDFLAGS} `${PYTHON3_CONFIG} --ldflags`"
+               enable_python_scripting=yes
+       ])
 ])
-LIBIDE_CFLAGS="${LIBIDE_CFLAGS} `${PYTHON3_CONFIG} --includes`"
-LIBIDE_LIBS="${LIBIDE_LIBS} `${PYTHON3_CONFIG} --libs`"
-LIBIDE_LDFLAGS="${LIBIDE_LDFLAGS} `${PYTHON3_CONFIG} --ldflags`"
+
+
+dnl ***********************************************************************
+dnl Define automake conditionals based on what we found
+dnl ***********************************************************************
+AM_CONDITIONAL(ENABLE_PYTHON_SCRIPTING, test x$enable_python_scripting != xno)
+AM_CONDITIONAL(ENABLE_GJS_SCRIPTING, test x$enable_gjs_scripting != xno)
 
 
 dnl ***********************************************************************
@@ -500,6 +519,11 @@ echo "  Build Test Suite ..................... : ${enable_tests}"
 echo "  Build API reference .................. : ${enable_gtk_doc}"
 echo "  Use cross-referencing in API docs .... : ${enable_doc_cross_references}"
 echo ""
+echo " Scripting"
+echo ""
+echo "  Python ............................... : ${enable_python_scripting}"
+echo "  GJS .................................. : ${enable_gjs_scripting}"
+echo ""
 echo " Plugins"
 echo ""
 echo "  Autotools ............................ : yes"
diff --git a/libide/Makefile.am b/libide/Makefile.am
index ce9a076..1a89608 100644
--- a/libide/Makefile.am
+++ b/libide/Makefile.am
@@ -185,8 +185,6 @@ libide_1_0_la_SOURCES = \
        gconstructor.h \
        git/ide-git-buffer-change-monitor.c \
        git/ide-git-buffer-change-monitor.h \
-       gjs/ide-gjs-script.cpp \
-       gjs/ide-gjs-script.h \
        gsettings/ide-gsettings-file-settings.c \
        gsettings/ide-gsettings-file-settings.h \
        gsettings/ide-language-defaults.c \
@@ -226,8 +224,6 @@ libide_1_0_la_SOURCES = \
        modelines/ide-modelines-file-settings.h \
        modelines/modeline-parser.c \
        modelines/modeline-parser.h \
-       pygobject/ide-pygobject-script.c \
-       pygobject/ide-pygobject-script.h \
        theatrics/ide-box-theatric.c \
        theatrics/ide-box-theatric.h \
        util/ide-cairo.c \
@@ -255,11 +251,9 @@ libide_1_0_la_includes = \
        -I$(srcdir)/doap \
        -I$(srcdir)/editorconfig \
        -I$(srcdir)/git \
-       -I$(srcdir)/gjs \
        -I$(srcdir)/gsettings \
        -I$(srcdir)/local \
        -I$(srcdir)/modelines \
-       -I$(srcdir)/pygobject \
        -I$(srcdir)/resources \
        -I$(srcdir)/theatrics \
        -I$(srcdir)/util \
@@ -307,6 +301,28 @@ libide_1_0_la_built_sources = \
        resources/ide-resources.h \
        $(NULL)
 
+if ENABLE_GJS_SCRIPTING
+libide_1_0_la_includes += -I$(srcdir)/gjs
+libide_1_0_la_SOURCES += \
+       gjs/ide-gjs-script.cpp \
+       gjs/ide-gjs-script.h
+libide_1_0_la_CFLAGS += \
+       $(GJS_CFLAGS) \
+       -DENABLE_GJS_SCRIPTING
+libide_1_0_la_LIBADD += $(GJS_LIBS)
+endif
+
+if ENABLE_PYTHON_SCRIPTING
+libide_1_0_la_includes += -I$(srcdir)/pygobject
+libide_1_0_la_SOURCES += \
+       pygobject/ide-pygobject-script.c \
+       pygobject/ide-pygobject-script.h
+libide_1_0_la_CFLAGS += \
+       $(PYGOBJECT_CFLAGS) \
+       -DENABLE_PYTHON_SCRIPTING
+libide_1_0_la_LIBADD += $(PYGOBJECT_LIBS)
+endif
+
 
 glib_enum_h = ide-enums.h
 glib_enum_c = ide-enums.c
diff --git a/libide/ide.c b/libide/ide.c
index 70d5441..54c6775 100644
--- a/libide/ide.c
+++ b/libide/ide.c
@@ -28,14 +28,20 @@
 #include "ide-editorconfig-file-settings.h"
 #include "ide-file-settings.h"
 #include "ide-git-vcs.h"
-#include "ide-gjs-script.h"
 #include "ide-gsettings-file-settings.h"
 #include "ide-modelines-file-settings.h"
 #include "ide-internal.h"
 #include "ide-project-miner.h"
-#include "ide-pygobject-script.h"
 #include "ide-search-provider.h"
 
+#ifdef ENABLE_GJS_SCRIPTING
+# include "ide-gjs-script.h"
+#endif
+
+#ifdef ENABLE_PYTHON_SCRIPTING
+# include "ide-pygobject-script.h"
+#endif
+
 #include "modeline-parser.h"
 
 static gboolean     gProgramNameRead;
@@ -96,15 +102,19 @@ ide_init_ctor (void)
                                   IDE_FILE_SETTINGS_EXTENSION_POINT".gsettings",
                                   -300);
 
+#ifdef ENABLE_GJS_SCRIPTING
   g_io_extension_point_implement (IDE_SCRIPT_EXTENSION_POINT,
                                   IDE_TYPE_GJS_SCRIPT,
                                   IDE_SCRIPT_EXTENSION_POINT".gjs",
                                   -100);
+#endif
 
+#ifdef ENABLE_PYTHON_SCRIPTING
   g_io_extension_point_implement (IDE_SCRIPT_EXTENSION_POINT,
                                   IDE_TYPE_PYGOBJECT_SCRIPT,
                                   IDE_SCRIPT_EXTENSION_POINT".py",
                                   -100);
+#endif
 
   g_io_extension_point_implement (IDE_VCS_EXTENSION_POINT,
                                   IDE_TYPE_GIT_VCS,