File: configure.ac.features

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dnl
dnl Define macros to enable various features.
dnl  - Macro: CAIRO_ENABLE_* (ID, NAME, DEFAULT, COMMANDS)
dnl
dnl where:
dnl
dnl	ID is the feature id, eg. "ft" for cairo_ft_...
dnl	NAME is the human-readable name of the feature, eg. "FreeType"
dnl	DEFAULT is the default state of the feature:
dnl		"no" for experimental backends, eg. your favorite new backend
dnl		"yes" for mandatory backends, eg. png
dnl		"auto" for other supported backends, eg. xlib
dnl	COMMANDS are run to check whether the feature can be enabled.  Their
dnl		result may be cached, so user should not count on them being run.
dnl		They should set use_$(ID) to something other than yes if the
dnl		feature cannot be built, eg. "no (requires SomeThing)".  It then
dnl		should also set $(ID)_REQUIRES/CFLAGS/LIBS/...
dnl		appropriately.  Look at the macro definition for more details,
dnl		or ask if in doubt.
dnl

AC_DEFUN([CAIRO_ENABLE],
	[_CAIRO_ENABLE([$1],	[$2],			,		[$3],[$4])])dnl

AC_DEFUN([CAIRO_ENABLE_SURFACE_BACKEND],
	[_CAIRO_ENABLE([$1],	[$2 surface backend],	surface,	[$3],[$4])])dnl

AC_DEFUN([CAIRO_ENABLE_FONT_BACKEND],
	[_CAIRO_ENABLE([$1],	[$2 font backend],	font,	  	[$3],[$4])])dnl

AC_DEFUN([CAIRO_ENABLE_FUNCTIONS],
	[_CAIRO_ENABLE([$1],	[$2 functions],		functions,	[$3],[$4])])dnl


dnl
dnl Define cr_feature_pc and friends ala other cr_feature_* macros
dnl
m4_define([cr_pc_modname],
	[[cairo-]m4_translit([$1],_,-)])dnl
m4_define([cr_feature_pc],
	[cr_pc_modname(cr_feature)[.pc]])dnl
m4_define([cr_feature_uninstalled_pc],
	[cr_pc_modname(cr_feature)[-uninstalled.pc]])dnl


dnl ===========================================================================
dnl
dnl Hooks
dnl
dnl ===========================================================================


dnl ===========================================================================
dnl
dnl Generate {src,boilerplate}/Makefile.{am,win32}.config
dnl

CAIRO_INIT_MAKEFILES([build])
CAIRO_CONFIG_MAKEFILE([cairo], [src])dnl
CAIRO_CONFIG_MAKEFILE([cairo_boilerplate], [boilerplate])dnl
CAIRO_MAKEFILE_INCLUDE(*,[Makefile.sources])dnl
dnl An empty line per feature for readability
CAIRO_MAKEFILE_ACCUMULATE_FEATURE(*,*,*,*,[])dnl


dnl Collect list of all supported public headers
CAIRO_MAKEFILE_ACCUMULATE(*,
[supported_$1_headers = $($1_headers)]dnl
)dnl
CAIRO_MAKEFILE_ACCUMULATE_FEATURE(*,*,!no,!,
[supported_$1_headers += $($1_$2_headers)]dnl
)dnl

dnl Collect list of all unsupported public headers
CAIRO_MAKEFILE_ACCUMULATE(*,
[unsupported_$1_headers =]dnl
)dnl
CAIRO_MAKEFILE_ACCUMULATE_FEATURE(*,*,no,!,
[unsupported_$1_headers += $($1_$2_headers)]dnl
)dnl

dnl Collect list of source files for all public features
CAIRO_MAKEFILE_ACCUMULATE(*,
[dnl
all_$1_headers = $($1_headers)
all_$1_private = $($1_private)
all_$1_cxx_sources = $($1_cxx_sources)
all_$1_sources = $($1_sources)
])dnl
CAIRO_MAKEFILE_ACCUMULATE_FEATURE(*,*,*,!,
[dnl
all_$1_headers += $($1_$2_headers)
all_$1_private += $($1_$2_private)
all_$1_cxx_sources += $($1_$2_cxx_sources)
all_$1_sources += $($1_$2_sources)]dnl
)dnl

dnl Collect list of source files for enabled public features
CAIRO_MAKEFILE_ACCUMULATE(*,
[dnl
enabled_$1_headers = $($1_headers)
enabled_$1_private = $($1_private)
enabled_$1_cxx_sources = $($1_cxx_sources)
enabled_$1_sources = $($1_sources)
])dnl
CAIRO_MAKEFILE_ACCUMULATE_FEATURE(*,yes,*,!,
[dnl
enabled_$1_headers += $($1_$2_headers)
enabled_$1_private += $($1_$2_private)
enabled_$1_cxx_sources += $($1_$2_cxx_sources)
enabled_$1_sources += $($1_$2_sources)]dnl
)dnl

dnl No public headers for private features

dnl Collect list of source files for all private features
CAIRO_MAKEFILE_ACCUMULATE_FEATURE(*,*,*,,
[dnl
all_$1_private += $($1_$2_private) $($1_$2_headers)
all_$1_cxx_sources += $($1_$2_cxx_sources)
all_$1_sources += $($1_$2_sources)]dnl
)dnl

dnl Collect list of source files for enabled private features
CAIRO_MAKEFILE_ACCUMULATE_FEATURE(*,yes,*,,
[dnl
enabled_$1_private += $($1_$2_private) $($1_$2_headers)
enabled_$1_cxx_sources += $($1_$2_cxx_sources)
enabled_$1_sources += $($1_$2_sources)]dnl
)dnl


dnl ===========================================================================
dnl
dnl Generate .pc files
dnl

dnl All .pc files are generated automatically except for this one
AC_CONFIG_FILES([src/cairo.pc])dnl
AC_CONFIG_FILES([cairo-uninstalled.pc:src/cairo-uninstalled.pc.in])dnl

dnl pkg-config requires, non-pkgconfig cflags and libs, and total cflags and libs
CAIRO_FEATURE_VARS_REGISTER([BASE],[cairo])dnl
CAIRO_ACCUMULATED_FEATURE_VARS_REGISTER([REQUIRES],,[ ])dnl
CAIRO_ACCUMULATED_FEATURE_VARS_REGISTER([CFLAGS NONPKGCONFIG_CFLAGS],,[ ])dnl
CAIRO_ACCUMULATED_FEATURE_VARS_REGISTER([LIBS NONPKGCONFIG_LIBS],,[ ],[$LIBS])dnl
CAIRO_FEATURE_VARS_REGISTER([NONPKGCONFIG_EXTRA_LIBS])dnl
AC_SUBST(CAIRO_REQUIRES)dnl
AC_SUBST(CAIRO_CFLAGS)dnl
AC_SUBST(CAIRO_LDFLAGS)dnl
AC_SUBST(CAIRO_NONPKGCONFIG_CFLAGS)dnl
AC_SUBST(CAIRO_LIBS)dnl
AC_SUBST(CAIRO_NONPKGCONFIG_LIBS)dnl

dnl add non-pkgconfig values
AC_CONFIG_COMMANDS_PRE(
[dnl
CAIRO_CFLAGS="$CAIRO_CFLAGS $CAIRO_NONPKGCONFIG_CFLAGS"
CAIRO_LIBS="$CAIRO_LIBS $CAIRO_NONPKGCONFIG_LIBS"
])dnl

m4_define([_CAIRO_FEATURE_CONFIG_PKGCONFIG_FILE],
[dnl
	AC_CONFIG_FILES([$3:$4],
	[dnl
		mv "$3" "$3.tmp" &&
		$SED "dnl
		s%@FEATURE_PC@%]cr_pc_modname([$1])[%g;dnl
		s%@FEATURE_NAME@%$2%g;dnl
		s%@FEATURE_BASE@%$$1_BASE%g;dnl
		s%@FEATURE_REQUIRES@%$$1_REQUIRES%g;dnl
		s%@FEATURE_NONPKGCONFIG_LIBS@%$$1_NONPKGCONFIG_LIBS%g;dnl
		s%@FEATURE_NONPKGCONFIG_EXTRA_LIBS@%$$1_NONPKGCONFIG_EXTRA_LIBS%g;dnl
		s%@FEATURE_NONPKGCONFIG_CFLAGS@%$$1_NONPKGCONFIG_CFLAGS%g;dnl
		" < "$3.tmp" > "$3" && rm -f "$3.tmp" ||
		AC_MSG_ERROR(failed to update $3)
	],[dnl
		SED='$SED'
		$1_BASE='$$1_BASE'
		$1_REQUIRES='$$1_REQUIRES'
		$1_NONPKGCONFIG_LIBS='$$1_NONPKGCONFIG_LIBS'
		$1_NONPKGCONFIG_EXTRA_LIBS='$$1_NONPKGCONFIG_EXTRA_LIBS'
		$1_NONPKGCONFIG_CFLAGS='$$1_NONPKGCONFIG_CFLAGS'
	])dnl
])dnl

dnl Generate .pc files for enabled non-builtin public features
CAIRO_FEATURE_HOOK_REGISTER(yes,!always,!,
[dnl
	_CAIRO_FEATURE_CONFIG_PKGCONFIG_FILE(
		[$1],
		cr_feature_name,
		[src/]cr_feature_pc,
		[src/cairo-features.pc.in]
	)dnl
])dnl

dnl Generate -uninstalled.pc files for enabled non-builtin public features
CAIRO_FEATURE_HOOK_REGISTER(yes,!always,!,
[dnl
	_CAIRO_FEATURE_CONFIG_PKGCONFIG_FILE(
		[$1],
		cr_feature_name,
		cr_feature_uninstalled_pc,
		[src/cairo-features-uninstalled.pc.in]
	)dnl
])dnl


dnl Collect list of .pc files for all non-builtin public features
CAIRO_MAKEFILE_ACCUMULATE(cairo,
[all_$1_pkgconf = cairo.pc])dnl
CAIRO_MAKEFILE_ACCUMULATE_FEATURE(cairo,*,!always,!,
[all_$1_pkgconf += cr_feature_pc])dnl

dnl Collect list of .pc files for enabled non-builtin public features
CAIRO_MAKEFILE_ACCUMULATE(cairo,
[enabled_$1_pkgconf = cairo.pc])dnl
CAIRO_MAKEFILE_ACCUMULATE_FEATURE(cairo,yes,!always,!,
[enabled_$1_pkgconf += cr_feature_pc])dnl


dnl ===========================================================================
dnl
dnl Generate src/cairo-features.h, src/cairo-supported-features.h, and
dnl src/cairo-features-win32.h
dnl

dnl Collect list of enabled public features
CAIRO_ACCUMULATORS_REGISTER(FEATURES,[ ])dnl
CAIRO_FEATURE_HOOK_REGISTER(yes,*,!,dnl
[dnl
	CAIRO_ACCUMULATE(FEATURES, cr_feature_tag)dnl
])dnl
dnl Collect list of all supported public features
CAIRO_ACCUMULATORS_REGISTER(SUPPORTED_FEATURES,[ ])dnl
CAIRO_FEATURE_HOOK_REGISTER(*,!no,!,dnl
[dnl
	CAIRO_ACCUMULATE(SUPPORTED_FEATURES, cr_feature_tag)
])dnl
dnl Collect list of all supported disabled public features
CAIRO_ACCUMULATORS_REGISTER(NO_FEATURES,[ ])dnl
CAIRO_FEATURE_HOOK_REGISTER(no,*,!,
[dnl
	CAIRO_ACCUMULATE(NO_FEATURES, cr_feature_tag)
])dnl

dnl Generate src/cairo-features.h
CAIRO_CONFIG_COMMANDS([src/cairo-features.h],
[dnl
	echo '/* Generated by configure.  Do not edit. */'
	echo '#ifndef CAIRO_FEATURES_H'
	echo '#define CAIRO_FEATURES_H'
	echo ''
	for FEATURE in $CAIRO_FEATURES; do
		echo "#define $FEATURE 1"
	done | LANG=C sort
	echo ''
	for FEATURE in $CAIRO_NO_FEATURES; do
		echo "/*#undef $FEATURE */"
	done | LANG=C sort
	echo ''
	echo '#endif'
],[dnl
	CAIRO_FEATURES='$CAIRO_FEATURES'
	CAIRO_NO_FEATURES='$CAIRO_NO_FEATURES'
])dnl
dnl Generate src/cairo-supported-features.h
CAIRO_CONFIG_COMMANDS([src/cairo-supported-features.h],
[dnl
	echo '/* Generated by configure.  Do not edit. */'
	echo '#ifndef CAIRO_SUPPORTED_FEATURES_H'
	echo '#define CAIRO_SUPPORTED_FEATURES_H'
	echo ''
	echo '/* This is a dummy header, to trick gtk-doc only */'
	echo ''
	for FEATURE in $CAIRO_SUPPORTED_FEATURES; do
		echo "#define $FEATURE 1"
	done
	echo ''
	echo '#endif'
],[dnl
	CAIRO_SUPPORTED_FEATURES='$CAIRO_SUPPORTED_FEATURES'
])dnl

dnl For enabled private features just define them in config.h.  No fanfare!
CAIRO_FEATURE_HOOK_REGISTER(yes,*,,
[dnl
	AC_DEFINE(cr_feature_tag, 1, [Define to 1 to enable cairo's ]cr_feature_name[ feature])
])dnl


dnl Generate build/Makefile.win32.features-h that generates src/cairo-features.h
CAIRO_CONFIG_MAKEFILE_PRIVATE_WIN32([win32_features_h],[build],[features-h])
dnl
CAIRO_MAKEFILE_ACCUMULATE([win32_features_h],
[$(top_srcdir)/src/cairo-features.h: $(top_srcdir)/build/Makefile.win32.features
	@echo "Generating src/cairo-features.h"
	@echo "/* Generated by Makefile.win32.features-h.  Do not edit. */" > $(top_srcdir)/src/cairo-features.h
	@echo "[#]ifndef CAIRO_FEATURES_H" >> $(top_srcdir)/src/cairo-features.h
	@echo "[#]define CAIRO_FEATURES_H 1" >> $(top_srcdir)/src/cairo-features.h]dnl
)
AC_CONFIG_COMMANDS_PRE(
[dnl
	CAIRO_MAKEFILE_ACCUMULATE([win32_features_h], [	@echo "[#]endif" >>  $(top_srcdir)/src/cairo-features.h])
])dnl
CAIRO_MAKEFILE_ACCUMULATE_FEATURE([win32_features_h],yes,*,*,dnl
[	@echo "[#]define cr_feature_tag 1" >> $(top_srcdir)/src/cairo-features.h]dnl
)dnl


dnl ===========================================================================
dnl
dnl Report
dnl

CAIRO_ACCUMULATORS_REGISTER([WARNING_MESSAGE],m4_newline()m4_newline)dnl

dnl Collect warning message for enabled unsupported public features
CAIRO_FEATURE_HOOK_REGISTER(yes,no,!,
[dnl
	CAIRO_ACCUMULATE([WARNING_MESSAGE], CAIRO_TEXT_WRAP([The ]cr_feature_name[ feature is still under active development and is included in this release only as a preview. It does NOT fully work yet and incompatible changes may yet be made to ]cr_feature_name[ specific API.], [--- ]))
])dnl

dnl Collect warning message for disabled recommended features
CAIRO_FEATURE_HOOK_REGISTER(no,yes,*,
[dnl
	CAIRO_ACCUMULATE([WARNING_MESSAGE], CAIRO_TEXT_WRAP([It is strongly recommended that you do NOT disable the ]cr_feature_name[ feature.], [+++ ]))
])dnl


dnl Collect enabled native surface/font backend features
CAIRO_ACCUMULATORS_REGISTER([NATIVE_SURFACE_BACKENDS])dnl
CAIRO_ACCUMULATORS_REGISTER([NATIVE_FONT_BACKENDS])dnl
CAIRO_FEATURE_HOOK_REGISTER(yes,auto,surface,
[dnl
	CAIRO_ACCUMULATE([NATIVE_SURFACE_BACKENDS], [$1])
])dnl
CAIRO_FEATURE_HOOK_REGISTER(yes,auto,font,
[dnl
	CAIRO_ACCUMULATE([NATIVE_FONT_BACKENDS], [$1])
])dnl

dnl Collect warning message if no native surface/font backend feature enabled
AC_CONFIG_COMMANDS_PRE(dnl
[dnl
	AS_IF([test -z "$CAIRO_NATIVE_SURFACE_BACKENDS"],dnl
	[dnl
		CAIRO_ACCUMULATE([WARNING_MESSAGE], CAIRO_TEXT_WRAP([No native surface backends enabled for your platform. It is strongly recommended that you enable the native surface backend feature for your platform.], [*** ]))
	])
	AS_IF([test -z "$CAIRO_NATIVE_FONT_BACKENDS"],dnl
	[dnl
		CAIRO_ACCUMULATE([WARNING_MESSAGE], CAIRO_TEXT_WRAP([No native font backends enabled for your platform. It is strongly recommended that you enable the native font backend feature for your platform.], [*** ]))
	])
])dnl


AC_DEFUN([CAIRO_REPORT],
[dnl
	V="$CAIRO_VERSION_MAJOR.$CAIRO_VERSION_MINOR.$CAIRO_VERSION_MICRO"
	echo ""
	echo "cairo (version $V [[$CAIRO_RELEASE_STATUS]]) will be compiled with:"
	echo ""
	echo "The following surface backends:"
	echo "  Image:         yes (always builtin)"
	echo "  Recording:     yes (always builtin)"
	echo "  Observer:      yes (always builtin)"
	echo "  Mime:          yes (always builtin)"
	echo "  Tee:           $use_tee"
	echo "  XML:           $use_xml"
	#echo "  Skia:          $use_skia"
	echo "  Xlib:          $use_xlib"
	echo "  Xlib Xrender:  $use_xlib_xrender"
	echo "  Qt:            $use_qt"
	echo "  Quartz:        $use_quartz"
	echo "  Quartz-image:  $use_quartz_image"
	echo "  XCB:           $use_xcb"
	echo "  Win32:         $use_win32"
	echo "  OS2:           $use_os2"
	echo "  CairoScript:   $use_script"
	echo "  PostScript:    $use_ps"
	echo "  PDF:           $use_pdf"
	echo "  SVG:           $use_svg"
	echo "  OpenGL:        $use_gl"
	echo "  OpenGL ES 2.0: $use_glesv2"
	echo "  OpenGL ES 3.0: $use_glesv3"
	echo "  BeOS:          $use_beos"
	echo "  DirectFB:      $use_directfb"
	echo "  OpenVG:        $use_vg"
	echo "  DRM:           $use_drm"
	echo "  Cogl:          $use_cogl"
	echo ""
	echo "The following font backends:"
	echo "  User:          yes (always builtin)"
	echo "  FreeType:      $use_ft"
	echo "  Fontconfig:    $use_fc"
	echo "  Win32:         $use_win32_font"
	echo "  Quartz:        $use_quartz_font"
	echo ""
	echo "The following functions:"
	echo "  PNG functions:   $use_png"
	echo "  GLX functions:   $use_glx"
	echo "  WGL functions:   $use_wgl"
	echo "  EGL functions:   $use_egl"
	echo "  X11-xcb functions: $use_xlib_xcb"
	echo "  XCB-shm functions: $use_xcb_shm"
	echo ""
	echo "The following features and utilities:"
	echo "  cairo-trace:                $use_trace"
	echo "  cairo-script-interpreter:   $use_interpreter"
	echo "  cairo-perf-utils:           $use_perf_utils"
	echo ""
	echo "And the following internal features:"
	echo "  pthread:       $use_pthread"
	echo "  gtk-doc:       $enable_gtk_doc"
	echo "  gcov support:  $use_gcov"
	echo "  symbol-lookup: $use_symbol_lookup"
	echo "  test surfaces: $use_test_surfaces"
	echo "  ps testing:    $test_ps"
	echo "  pdf testing:   $test_pdf"
	echo "  svg testing:   $test_svg"
	if test x"$use_win32" = "xyes"; then
		echo "  win32 printing testing:    $test_win32_printing"
	fi
	echo "$CAIRO_WARNING_MESSAGE"
	echo ""
])dnl