[gdk-pixbuf] MSVC Introspection Builds: Add a Common Autotools Module

[Chun-wei Fan <fanchunwei src gnome org>]

commit d90105d6eb3be287665912e6d92f0bb9b81ed8de
Author: Chun-wei Fan <fanchunwei src gnome org>
Date:   Tue Sep 15 15:02:31 2015 +0800

    MSVC Introspection Builds: Add a Common Autotools Module
    
    Add a common autotools module that can be included by the Makefile.am's
    so that the file lists for the sources and headers can be generated
    during 'make dist', along with the command lines for g-ir-scanner and
    g-ir-compiler to generate the .gir files and compile the .typelib files.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=765034

 build/Makefile.msvc-introspection |  125 +++++++++++++++++++++++++++++++++++++
 1 files changed, 125 insertions(+), 0 deletions(-)
---
diff --git a/build/Makefile.msvc-introspection b/build/Makefile.msvc-introspection
new file mode 100644
index 0000000..6c90964
--- /dev/null
+++ b/build/Makefile.msvc-introspection
@@ -0,0 +1,125 @@
+# Author: Fan, Chun-wei
+# Common autotools file for constructing the g-ir-scanner and
+# g-ir-compiler command lines for Visual Studio builds.
+
+# This is copied from $(srcroot)/build from the gobject-introspection
+# project, which may be included in projects that support both
+# Visual Studio builds and introspection.
+
+# * Input variables:
+#
+#   MSVC_INTROSPECT_GIRS - List of .gir's that should be built
+#                          in the NMake Makefiles
+#
+# * Simple tutorial
+#
+# Add this to Makefile.am where your library/program is built:
+#   (Either YourLib_1_0_gir_MSVC_LIBS or YourLib_1_0_gir_MSVC_PROGRAM
+#    is required unless --headers-only is specified in
+#    YourLib_1_0_gir__MSVC_SCANNERFLAGS)
+#
+#   include $(top_srcdir)/build/Makefile.msvc-introspection
+#   MSVC_INTROSPECT_GIRS = YourLib-1.0.gir
+#   YourLib_1_0_gir_NAMESPACE = YourLib # This is optional
+#   YourLib_1_0_gir_VERSION = 1.0 # This is optional
+#   YourLib_1_0_gir_MSVC_LIBS = yourlib-1.0
+#   YourLib_1_0_gir_MSVC_FILES = $(libyourlib_1_0_SOURCES)
+#   YourLib_1_0_gir_MSVC_PROGRAM = YourProgram
+#   YourLib_1_0_gir_MSVC_PACKAGES = (Dependent .pc files)
+#   YourLib_1_0_gir_MSVC_INCLUDE_GIRS = (Dependent external .gir's)
+#   YourLiv_1_0_gir_MSVC_EXPORT_PACKAGES = (Packages exported by this .gir)
+
+# Private functions
+
+## Transform the MSVC project filename (no filename extensions) to something which can reference through a 
variable
+## without automake/make complaining, eg Gtk-2.0 -> Gtk_2_0
+_gir_name=$(subst /,_,$(subst -,_,$(subst .,_,$(1))))
+
+# Namespace and Version is either fetched from the gir filename
+# or the _NAMESPACE/_VERSION variable combo
+_gir_namespace_msvc = $(or $($(_gir_name)_NAMESPACE),$(firstword $(subst -, ,$(notdir $(1)))))
+_gir_version_msvc = $(or $($(_gir_name)_VERSION),$(lastword $(subst -, ,$(1:.gir=))))
+_typelib_basename_msvc = $(_gir_namespace_msvc)'-'$(_gir_version_msvc)
+
+# _PROGRAM is an optional variable which needs its own --program argument
+_gir_program_msvc = $(if $($(_gir_name)_MSVC_PROGRAM),--program=$($(_gir_name)_MSVC_PROGRAM))
+
+# Deduce the sub-folder from $(srcroot) where the sources reside in
+_gir_source_path_raw_msvc:=$(subst $(abs_top_srcdir),,$(abs_srcdir))
+_gir_source_path_msvc=$(subst /,\\,$(_gir_source_path_raw_msvc))
+_gir_source_subdir_int_msvc=$(subst \\\\,\\,\\$(_gir_source_path_msvc)\\)
+_gir_source_subdir_msvc=$(subst \\.\\,\\,$(_gir_source_subdir_int_msvc))
+
+_gir_files_raw_msvc=$(subst /,\\,$($(_gir_name)_MSVC_FILES))
+_gir_files_msvc=$(subst $(srcdir)\\,,$(subst $(builddir)\\,,$(subst 
$(top_builddir)\\$(_gir_source_path_msvc)\\,\\,$(_gir_files_raw_msvc))))
+
+# Create a list of items for:
+# - Libraries
+# - Packages
+# - GIRs to include
+# - packages to export
+
+_gir_libraries_msvc = $(foreach lib,$($(_gir_name)_MSVC_LIBS),--library=$(lib))
+_gir_packages_msvc = $(foreach pkg,$($(_gir_name)_MSVC_PACKAGES),--pkg=$(pkg))
+_gir_includes_msvc = $(foreach include,$($(_gir_name)_MSVC_INCLUDE_GIRS),--include=$(include))
+_gir_export_packages_msvc = $(foreach pkg,$($(_gir_name)_MSVC_EXPORT_PACKAGES),--pkg-export=$(pkg))
+
+#
+# Create NMake Makefile Sections for Building Introspection files
+# from autotools files
+# $(1) - File Name of the .gir that is to be generated
+#
+
+define gir-nmake-builder
+
+# Basic sanity check, to make sure required variables are set
+$(if $($(_gir_name)_MSVC_FILES),,$(error Need to define $(_gir_name)_MSVC_FILES))
+$(if $(or $(findstring --header-only,$($(_gir_name)_MSVC_SCANNERFLAGS)),
+          $($(_gir_name)_MSVC_LIBS),
+          $($(_gir_name)_MSVC_PROGRAM)),,
+    $(error Need to define $(_gir_name)_MSVC_LIBS or $(_gir_name)_MSVC_PROGRAM))
+
+$(top_builddir)/build/win32/$(_gir_name)_list:
+       for F in $(_gir_files_msvc); do \
+               case $$$$F in \
+               *.c|*.cpp|*.cc|*.cxx|*.h|*.hpp|*.hh|*.hxx) \
+                       echo '..\..'$(_gir_source_subdir_msvc)$$$$F 
> > $(top_builddir)/build/win32/$(_gir_name)_list \
+                       ;; \
+               esac; \
+       done
+
+$(top_builddir)/build/win32/$(1).msvc.introspect:
+       -$(RM) $(top_builddir)/build/win32/$(1).msvc.introspect
+
+# Assemble the Command to Run g-ir-scanner
+       echo $(1)': '$(_gir_name)'_list 
'$($(_gir_name)_MSVC_GIR_DEPS)>>$(top_builddir)/build/win32/$(1).msvc.introspect
+       echo '  @-echo Generating $$$$    '>>$(top_builddir)/build/win32/$(1).msvc.introspect
+       echo '  $$$$(PYTHON) $$$$(G_IR_SCANNER) \'>>$(top_builddir)/build/win32/$(1).msvc.introspect
+       echo '  --verbose -no-libtool   \'>>$(top_builddir)/build/win32/$(1).msvc.introspect
+       echo '  --namespace='$(_gir_namespace_msvc)'    \'>>$(top_builddir)/build/win32/$(1).msvc.introspect
+       echo '  --nsversion='$(_gir_version_msvc)'      \'>>$(top_builddir)/build/win32/$(1).msvc.introspect
+       echo '  '$(_gir_packages_msvc)' \'>>$(top_builddir)/build/win32/$(1).msvc.introspect
+       echo '  '$(_gir_libraries_msvc)'        \'>>$(top_builddir)/build/win32/$(1).msvc.introspect
+       echo '  '$(_gir_program_msvc)'  \'>>$(top_builddir)/build/win32/$(1).msvc.introspect
+       echo '  --add-include-path=$$$$(G_IR_INCLUDEDIR)        
\'>>$(top_builddir)/build/win32/$(1).msvc.introspect
+       echo '  '$(_gir_includes_msvc)' \'>>$(top_builddir)/build/win32/$(1).msvc.introspect
+       echo '  '$(_gir_export_packages_msvc)'  \'>>$(top_builddir)/build/win32/$(1).msvc.introspect
+       echo '  --cflags-begin  \'>>$(top_builddir)/build/win32/$(1).msvc.introspect
+       echo '  '$($(_gir_name)_MSVC_CFLAGS)'   \'>>$(top_builddir)/build/win32/$(1).msvc.introspect
+       echo '  --cflags-end    \'>>$(top_builddir)/build/win32/$(1).msvc.introspect
+       echo '  '$($(_gir_name)_MSVC_SCANNERFLAGS)'     \'>>$(top_builddir)/build/win32/$(1).msvc.introspect
+       echo '  --filelist='$(_gir_name)'_list  \'>>$(top_builddir)/build/win32/$(1).msvc.introspect
+       echo '  -o $$$$@'>>$(top_builddir)/build/win32/$(1).msvc.introspect
+       echo '' >>$(top_builddir)/build/win32/$(1).msvc.introspect
+
+# Finally Assemble the Command to Compile the generated .gir
+       echo '$(_typelib_basename_msvc).typelib: 
'$(_typelib_basename_msvc)'.gir'>>$(top_builddir)/build/win32/$(1).msvc.introspect
+       echo '  @-echo Compiling $$$$    '>>$(top_builddir)/build/win32/$(1).msvc.introspect
+       echo '  $$$$(G_IR_COMPILER)     \'>>$(top_builddir)/build/win32/$(1).msvc.introspect
+       echo '  --includedir=. --debug --verbose        \'>>$(top_builddir)/build/win32/$(1).msvc.introspect
+       echo '  '$(1)'  \'>>$(top_builddir)/build/win32/$(1).msvc.introspect
+       echo '  -o $$$$@'>>$(top_builddir)/build/win32/$(1).msvc.introspect
+       echo '' >>$(top_builddir)/build/win32/$(1).msvc.introspect
+endef
+
+$(foreach gir,$(MSVC_INTROSPECT_GIRS),$(eval $(call gir-nmake-builder,$(gir))))