configure.ac - third_party/harfbuzz - Git at Google

 AC_PREREQ([2.64])
 AC_INIT([HarfBuzz],
         [2.6.8],
         [https://github.com/harfbuzz/harfbuzz/issues/new],
         [harfbuzz],
         [http://harfbuzz.org/])

 AC_CONFIG_MACRO_DIR([m4])
 AC_CONFIG_SRCDIR([src/harfbuzz.pc.in])
 AC_CONFIG_HEADERS([config.h])

 AM_INIT_AUTOMAKE([1.13.0 gnits tar-ustar dist-xz no-dist-gzip -Wall no-define color-tests -Wno-portability])
 AM_SILENT_RULES([yes])
 AX_CODE_COVERAGE

 # Initialize libtool
 m4_ifdef([AM_PROG_AR], [AM_PROG_AR])
 LT_PREREQ([2.2])
 LT_INIT([disable-static])

 # Check for programs
 AC_PROG_CC
 AC_PROG_CC_C99
 AM_PROG_CC_C_O
 AC_PROG_CXX
 AX_CXX_COMPILE_STDCXX(11)
 AC_SYS_LARGEFILE
 PKG_PROG_PKG_CONFIG([0.20])
 AM_MISSING_PROG([RAGEL], [ragel])
 AM_MISSING_PROG([GIT], [git])

 # Version
 m4_define(hb_version_triplet,m4_split(AC_PACKAGE_VERSION,[[.]]))
 m4_define(hb_version_major,m4_argn(1,hb_version_triplet))
 m4_define(hb_version_minor,m4_argn(2,hb_version_triplet))
 m4_define(hb_version_micro,m4_argn(3,hb_version_triplet))
 HB_VERSION_MAJOR=hb_version_major
 HB_VERSION_MINOR=hb_version_minor
 HB_VERSION_MICRO=hb_version_micro
 HB_VERSION=AC_PACKAGE_VERSION
 AC_SUBST(HB_VERSION_MAJOR)
 AC_SUBST(HB_VERSION_MINOR)
 AC_SUBST(HB_VERSION_MICRO)
 AC_SUBST(HB_VERSION)

 # Libtool version
 m4_define([hb_version_int],
 	  m4_eval(hb_version_major*10000 + hb_version_minor*100 + hb_version_micro))
 m4_if(m4_eval(hb_version_minor % 2), [1],
       dnl for unstable releases
       [m4_define([hb_libtool_revision], 0)],
       dnl for stable releases
       [m4_define([hb_libtool_revision], hb_version_micro)])
 m4_define([hb_libtool_age],
 	  m4_eval(hb_version_int - hb_libtool_revision))
 m4_define([hb_libtool_current],
 	  m4_eval(hb_libtool_age))
 HB_LIBTOOL_VERSION_INFO=hb_libtool_current:hb_libtool_revision:hb_libtool_age
 AC_SUBST(HB_LIBTOOL_VERSION_INFO)

 AC_ARG_WITH([libstdc++],
 	[AS_HELP_STRING([--with-libstdc++=@<:@yes/no@:>@],
 			[Allow linking with libstdc++ @<:@default=no@:>@])],
 	[with_libstdcxx=$withval],
 	[with_libstdcxx=no])
 AM_CONDITIONAL(WITH_LIBSTDCXX, [test "x$with_libstdcxx" = "xyes"])

 # Documentation
 have_gtk_doc=false
 m4_ifdef([GTK_DOC_CHECK], [
 GTK_DOC_CHECK([1.15],[--flavour no-tmpl])
 	if test "x$enable_gtk_doc" = xyes; then
 		have_gtk_doc=true
 	fi
 ], [
 	AM_CONDITIONAL([ENABLE_GTK_DOC], false)
 ])

 # Functions and headers
 AC_CHECK_FUNCS(atexit mprotect sysconf getpagesize mmap isatty roundf)
 AC_CHECK_HEADERS(unistd.h sys/mman.h stdbool.h)

 # Compiler flags
 AC_CANONICAL_HOST
 AC_CHECK_ALIGNOF([struct{char;}])
 if test "x$GCC" = "xyes"; then

 	# Make symbols link locally
 	AX_CHECK_LINK_FLAG([[-Bsymbolic-functions]], [LDFLAGS="$LDFLAGS -Bsymbolic-functions"])

 	# Make it possible to not link to libstdc++
 	# No threadsafe statics in C++ as we do it ourselves.
 	# We don't use these features, so it's safe to disable them
 	# even in the cases where we DO link to libstdc++.
 	# Put -fno-rtti before $CXXFLAGS such that users can re-enable it
 	# by overriding CXXFLAGS.
 	CXXFLAGS="-fno-rtti $CXXFLAGS -fno-exceptions -fno-threadsafe-statics"

 	case "$host" in
 		*-*-mingw*)
 		;;
 		*)
 			# Hide inline methods
 			CXXFLAGS="$CXXFLAGS -fvisibility-inlines-hidden"
 		;;
 	esac

 	case "$host" in
 		arm-*-*)
 			if test "x$ac_cv_alignof_struct_char__" != x1; then
 				# Request byte alignment
 				CXXFLAGS="$CXXFLAGS -mstructure-size-boundary=8"
 			fi
 		;;
 	esac
 fi

 AM_CONDITIONAL(HAVE_GCC, test "x$GCC" = "xyes")

 hb_os_win32=no
 AC_MSG_CHECKING([for native Win32])
 case "$host" in
   *-*-mingw*)
     hb_os_win32=yes
     ;;
 esac
 AC_MSG_RESULT([$hb_os_win32])
 AM_CONDITIONAL(OS_WIN32, test "$hb_os_win32" = "yes")

 have_pthread=false
 AX_PTHREAD([have_pthread=true])
 if $have_pthread; then
 	AC_DEFINE(HAVE_PTHREAD, 1, [Have POSIX threads])
 fi
 AM_CONDITIONAL(HAVE_PTHREAD, $have_pthread)

 dnl ==========================================================================

 AC_ARG_WITH(glib,
 	[AS_HELP_STRING([--with-glib=@<:@yes/no/auto@:>@],
 			[Use glib @<:@default=auto@:>@])],,
 	[with_glib=auto])
 have_glib=false
 GLIB_DEPS="glib-2.0 >= 2.19.1"
 AC_SUBST(GLIB_DEPS)
 if test "x$with_glib" = "xyes" -o "x$with_glib" = "xauto"; then
 	PKG_CHECK_MODULES(GLIB, $GLIB_DEPS, have_glib=true, :)
 fi
 if test "x$with_glib" = "xyes" -a "x$have_glib" != "xtrue"; then
 	AC_MSG_ERROR([glib support requested but glib-2.0 not found])
 fi
 if $have_glib; then
 	AC_DEFINE(HAVE_GLIB, 1, [Have glib2 library])
 fi
 AM_CONDITIONAL(HAVE_GLIB, $have_glib)

 dnl ===========================================================================

 AC_ARG_WITH(gobject,
 	[AS_HELP_STRING([--with-gobject=@<:@yes/no/auto@:>@],
 			[Use gobject @<:@default=no@:>@])],,
 	[with_gobject=no])
 have_gobject=false
 if test "x$with_gobject" = "xyes" -o "x$with_gobject" = "xauto"; then
 	PKG_CHECK_MODULES(GOBJECT, gobject-2.0 glib-2.0, have_gobject=true, :)
 fi
 if test "x$with_gobject" = "xyes" -a "x$have_gobject" != "xtrue"; then
 	AC_MSG_ERROR([gobject support requested but gobject-2.0 / glib-2.0 not found])
 fi
 if $have_gobject; then
 	AC_DEFINE(HAVE_GOBJECT, 1, [Have gobject2 library])
 	GLIB_MKENUMS=`$PKG_CONFIG --variable=glib_mkenums glib-2.0`
 	AC_SUBST(GLIB_MKENUMS)
 fi
 AM_CONDITIONAL(HAVE_GOBJECT, $have_gobject)
 AC_SUBST(have_gobject)

 dnl ===========================================================================


 dnl ===========================================================================
 # Gobject-Introspection
 have_introspection=false
 m4_ifdef([GOBJECT_INTROSPECTION_CHECK], [
 	if $have_gobject; then
 		GOBJECT_INTROSPECTION_CHECK([1.34.0])
 		if test "x$found_introspection" = xyes; then
 			have_introspection=true
 		fi
 	else
 		AM_CONDITIONAL([HAVE_INTROSPECTION], false)
 	fi
 ], [
 	AM_CONDITIONAL([HAVE_INTROSPECTION], false)
 ])

 dnl ==========================================================================

 AC_ARG_WITH(cairo,
 	[AS_HELP_STRING([--with-cairo=@<:@yes/no/auto@:>@],
 			[Use cairo @<:@default=auto@:>@])],,
 	[with_cairo=auto])
 have_cairo=false
 if test "x$with_cairo" = "xyes" -o "x$with_cairo" = "xauto"; then
 	PKG_CHECK_MODULES(CAIRO, cairo >= 1.8.0, have_cairo=true, :)
 fi
 if test "x$with_cairo" = "xyes" -a "x$have_cairo" != "xtrue"; then
 	AC_MSG_ERROR([cairo support requested but not found])
 fi
 if $have_cairo; then
 	AC_DEFINE(HAVE_CAIRO, 1, [Have cairo graphics library])
 fi
 AM_CONDITIONAL(HAVE_CAIRO, $have_cairo)

 have_cairo_ft=false
 if $have_cairo; then
 	PKG_CHECK_MODULES(CAIRO_FT, cairo-ft, have_cairo_ft=true, :)
 fi
 if $have_cairo_ft; then
 	AC_DEFINE(HAVE_CAIRO_FT, 1, [Have cairo-ft support in cairo graphics library])
 fi
 AM_CONDITIONAL(HAVE_CAIRO_FT, $have_cairo_ft)

 dnl ==========================================================================

 AC_ARG_WITH(fontconfig,
 	[AS_HELP_STRING([--with-fontconfig=@<:@yes/no/auto@:>@],
 			[Use fontconfig @<:@default=auto@:>@])],,
 	[with_fontconfig=auto])
 have_fontconfig=false
 if test "x$with_fontconfig" = "xyes" -o "x$with_fontconfig" = "xauto"; then
 	PKG_CHECK_MODULES(FONTCONFIG, fontconfig, have_fontconfig=true, :)
 fi
 if test "x$with_fontconfig" = "xyes" -a "x$have_fontconfig" != "xtrue"; then
 	AC_MSG_ERROR([fontconfig support requested but not found])
 fi
 if $have_fontconfig; then
 	AC_DEFINE(HAVE_FONTCONFIG, 1, [Have fontconfig library])
 fi
 AM_CONDITIONAL(HAVE_FONTCONFIG, $have_fontconfig)

 dnl ==========================================================================

 AC_ARG_WITH(icu,
 	[AS_HELP_STRING([--with-icu=@<:@yes/no/builtin/auto@:>@],
 			[Use ICU @<:@default=auto@:>@])],,
 	[with_icu=auto])
 have_icu=false
 if test "x$with_icu" = "xyes" -o "x$with_icu" = "xbuiltin" -o "x$with_icu" = "xauto"; then
 	PKG_CHECK_MODULES(ICU, icu-uc, have_icu=true, :)

 	dnl Fallback to icu-config if ICU pkg-config files could not be found
 	if test "$have_icu" != "true"; then
 		AC_CHECK_TOOL(ICU_CONFIG, icu-config, no)
 		AC_MSG_CHECKING([for ICU by using icu-config fallback])
 		if test "$ICU_CONFIG" != "no" && "$ICU_CONFIG" --version >/dev/null; then
 			have_icu=true
 			# We don't use --cflags as this gives us a lot of things that we don't
 			# necessarily want, like debugging and optimization flags
 			# See man (1) icu-config for more info.
 			ICU_CFLAGS=`$ICU_CONFIG --cppflags`
 			ICU_LIBS=`$ICU_CONFIG --ldflags-searchpath --ldflags-libsonly`
 			AC_SUBST(ICU_CFLAGS)
 			AC_SUBST(ICU_LIBS)
 			AC_MSG_RESULT([yes])
 		else
 			AC_MSG_RESULT([no])
 		fi
 	fi
 fi
 if test \( "x$with_icu" = "xyes" -o "x$with_icu" = "xbuiltin" \) -a "x$have_icu" != "xtrue"; then
 	AC_MSG_ERROR([icu support requested but icu-uc not found])
 fi

 if $have_icu; then
 	CXXFLAGS="$CXXFLAGS `$PKG_CONFIG --variable=CXXFLAGS icu-uc`"
 	AC_DEFINE(HAVE_ICU, 1, [Have ICU library])
 	if test "x$with_icu" = "xbuiltin"; then
 		AC_DEFINE(HAVE_ICU_BUILTIN, 1, [Use hb-icu Unicode callbacks])
 	fi
 fi
 AM_CONDITIONAL(HAVE_ICU, $have_icu)
 AM_CONDITIONAL(HAVE_ICU_BUILTIN, $have_icu && test "x$with_icu" = "xbuiltin")

 dnl ===========================================================================

 AC_ARG_WITH(graphite2,
 	[AS_HELP_STRING([--with-graphite2=@<:@yes/no/auto@:>@],
 			[Use the graphite2 library @<:@default=no@:>@])],,
 	[with_graphite2=no])
 have_graphite2=false
 GRAPHITE2_DEPS="graphite2 >= 1.2.0"
 AC_SUBST(GRAPHITE2_DEPS)
 if test "x$with_graphite2" = "xyes" -o "x$with_graphite2" = "xauto"; then
 	PKG_CHECK_MODULES(GRAPHITE2, $GRAPHITE2_DEPS, have_graphite2=true, :)
 	if test "x$have_graphite2" != "xtrue"; then
                 # If pkg-config is not available, graphite2 can still be there
 		ac_save_CFLAGS="$CFLAGS"
 		ac_save_CPPFLAGS="$CPPFLAGS"
 		CFLAGS="$CFLAGS $GRAPHITE2_CFLAGS"
 		CPPFLAGS="$CPPFLAGS $GRAPHITE2_CFLAGS"
 		AC_CHECK_HEADER(graphite2/Segment.h, have_graphite2=true, :)
 		CPPFLAGS="$ac_save_CPPFLAGS"
 		CFLAGS="$ac_save_CFLAGS"
 	fi
 fi
 if test "x$with_graphite2" = "xyes" -a "x$have_graphite2" != "xtrue"; then
 	AC_MSG_ERROR([graphite2 support requested but libgraphite2 not found])
 fi
 if $have_graphite2; then
 	AC_DEFINE(HAVE_GRAPHITE2, 1, [Have Graphite2 library])
 fi
 AM_CONDITIONAL(HAVE_GRAPHITE2, $have_graphite2)

 dnl ==========================================================================

 AC_ARG_WITH(freetype,
 	[AS_HELP_STRING([--with-freetype=@<:@yes/no/auto@:>@],
 			[Use the FreeType library @<:@default=auto@:>@])],,
 	[with_freetype=auto])
 have_freetype=false
 FREETYPE_DEPS="freetype2 >= 12.0.6"
 AC_SUBST(FREETYPE_DEPS)
 if test "x$with_freetype" = "xyes" -o "x$with_freetype" = "xauto"; then
 	# See freetype/docs/VERSION.DLL; 12.0.6 means freetype-2.4.2
 	PKG_CHECK_MODULES(FREETYPE, $FREETYPE_DEPS, have_freetype=true, :)
 fi
 if test "x$with_freetype" = "xyes" -a "x$have_freetype" != "xtrue"; then
 	AC_MSG_ERROR([FreeType support requested but libfreetype2 not found])
 fi
 if $have_freetype; then
 	AC_DEFINE(HAVE_FREETYPE, 1, [Have FreeType 2 library])
 	save_libs=$LIBS
 	LIBS="$LIBS $FREETYPE_LIBS"
 	AC_CHECK_FUNCS(FT_Get_Var_Blend_Coordinates FT_Set_Var_Blend_Coordinates FT_Done_MM_Var)
 	LIBS=$save_libs
 fi
 AM_CONDITIONAL(HAVE_FREETYPE, $have_freetype)

 dnl ===========================================================================

 AC_ARG_WITH(uniscribe,
 	[AS_HELP_STRING([--with-uniscribe=@<:@yes/no/auto@:>@],
 			[Use the Uniscribe library @<:@default=no@:>@])],,
 	[with_uniscribe=no])
 have_uniscribe=false
 if test "x$with_uniscribe" = "xyes" -o "x$with_uniscribe" = "xauto"; then
 	AC_CHECK_HEADERS(usp10.h windows.h, have_uniscribe=true)
 fi
 if test "x$with_uniscribe" = "xyes" -a "x$have_uniscribe" != "xtrue"; then
 	AC_MSG_ERROR([uniscribe support requested but not found])
 fi
 if $have_uniscribe; then
 	UNISCRIBE_CFLAGS=
 	UNISCRIBE_LIBS="-lusp10 -lgdi32 -lrpcrt4"
 	AC_SUBST(UNISCRIBE_CFLAGS)
 	AC_SUBST(UNISCRIBE_LIBS)
 	AC_DEFINE(HAVE_UNISCRIBE, 1, [Have Uniscribe library])
 fi
 AM_CONDITIONAL(HAVE_UNISCRIBE, $have_uniscribe)

 dnl ===========================================================================

 AC_ARG_WITH(gdi,
 	[AS_HELP_STRING([--with-gdi=@<:@yes/no/auto@:>@],
 			[Provide GDI integration helpers @<:@default=no@:>@])],,
 	[with_gdi=no])
 have_gdi=false
 if test "x$with_gdi" = "xyes" -o "x$with_gdi" = "xauto"; then
 	AC_CHECK_HEADERS(windows.h, have_gdi=true)
 fi
 if test "x$with_gdi" = "xyes" -a "x$have_gdi" != "xtrue"; then
 	AC_MSG_ERROR([gdi support requested but not found])
 fi
 if $have_gdi; then
 	GDI_CFLAGS=
 	GDI_LIBS="-lgdi32"
 	AC_SUBST(GDI_CFLAGS)
 	AC_SUBST(GDI_LIBS)
 	AC_DEFINE(HAVE_GDI, 1, [Have GDI library])
 fi
 AM_CONDITIONAL(HAVE_GDI, $have_gdi)

 dnl ===========================================================================

 AC_ARG_WITH(directwrite,
 	[AS_HELP_STRING([--with-directwrite=@<:@yes/no/auto@:>@],
 			[Use the DirectWrite library (experimental) @<:@default=no@:>@])],,
 	[with_directwrite=no])
 have_directwrite=false
 AC_LANG_PUSH([C++])
 if test "x$with_directwrite" = "xyes" -o "x$with_directwrite" = "xauto"; then
 	AC_CHECK_HEADERS(dwrite.h, have_directwrite=true)
 fi
 AC_LANG_POP([C++])
 if test "x$with_directwrite" = "xyes" -a "x$have_directwrite" != "xtrue"; then
 	AC_MSG_ERROR([directwrite support requested but not found])
 fi
 if $have_directwrite; then
 	DIRECTWRITE_CXXFLAGS=
 	DIRECTWRITE_LIBS=
 	AC_SUBST(DIRECTWRITE_CXXFLAGS)
 	AC_SUBST(DIRECTWRITE_LIBS)
 	AC_DEFINE(HAVE_DIRECTWRITE, 1, [Have DirectWrite library])
 fi
 AM_CONDITIONAL(HAVE_DIRECTWRITE, $have_directwrite)

 dnl ===========================================================================

 AC_ARG_WITH(coretext,
 	[AS_HELP_STRING([--with-coretext=@<:@yes/no/auto@:>@],
 			[Use CoreText @<:@default=no@:>@])],,
 	[with_coretext=no])
 have_coretext=false
 if test "x$with_coretext" = "xyes" -o "x$with_coretext" = "xauto"; then
 	AC_CHECK_TYPE(CTFontRef, have_coretext=true,, [#include <ApplicationServices/ApplicationServices.h>])

 	if $have_coretext; then
 		CORETEXT_CFLAGS=
 		CORETEXT_LIBS="-framework ApplicationServices"
 		AC_SUBST(CORETEXT_CFLAGS)
 		AC_SUBST(CORETEXT_LIBS)
 	else
 		# On iOS CoreText and CoreGraphics are stand-alone frameworks
 		if test "x$have_coretext" != "xtrue"; then
 			# Check for a different symbol to avoid getting cached result.
 			AC_CHECK_TYPE(CTRunRef, have_coretext=true,, [#include <CoreText/CoreText.h>])
 		fi

 		if $have_coretext; then
 			CORETEXT_CFLAGS=
 			CORETEXT_LIBS="-framework CoreText -framework CoreGraphics -framework CoreFoundation"
 			AC_SUBST(CORETEXT_CFLAGS)
 			AC_SUBST(CORETEXT_LIBS)
 		fi
 	fi
 fi
 if test "x$with_coretext" = "xyes" -a "x$have_coretext" != "xtrue"; then
 	AC_MSG_ERROR([CoreText support requested but libcoretext not found])
 fi
 if $have_coretext; then
 	AC_DEFINE(HAVE_CORETEXT, 1, [Have Core Text backend])
 fi
 AM_CONDITIONAL(HAVE_CORETEXT, $have_coretext)

 dnl ===========================================================================

 AC_CACHE_CHECK([for Intel atomic primitives], hb_cv_have_intel_atomic_primitives, [
 	hb_cv_have_intel_atomic_primitives=false
 	AC_TRY_LINK([
 		void memory_barrier (void) { __sync_synchronize (); }
 		int atomic_add (int *i) { return __sync_fetch_and_add (i, 1); }
 		int mutex_trylock (int *m) { return __sync_lock_test_and_set (m, 1); }
 		void mutex_unlock (int *m) { __sync_lock_release (m); }
 		], [], hb_cv_have_intel_atomic_primitives=true
 	)
 ])
 if $hb_cv_have_intel_atomic_primitives; then
 	AC_DEFINE(HAVE_INTEL_ATOMIC_PRIMITIVES, 1, [Have Intel __sync_* atomic primitives])
 fi

 dnl ===========================================================================

 AC_CACHE_CHECK([for Solaris atomic operations], hb_cv_have_solaris_atomic_ops, [
 	hb_cv_have_solaris_atomic_ops=false
 	AC_TRY_LINK([
 		#include <atomic.h>
 		/* This requires Solaris Studio 12.2 or newer: */
 		#include <mbarrier.h>
 		void memory_barrier (void) { __machine_rw_barrier (); }
 		int atomic_add (volatile unsigned *i) { return atomic_add_int_nv (i, 1); }
 		void *atomic_ptr_cmpxchg (volatile void **target, void *cmp, void *newval) { return atomic_cas_ptr (target, cmp, newval); }
 		], [], hb_cv_have_solaris_atomic_ops=true
 	)
 ])
 if $hb_cv_have_solaris_atomic_ops; then
 	AC_DEFINE(HAVE_SOLARIS_ATOMIC_OPS, 1, [Have Solaris __machine_*_barrier and atomic_* operations])
 fi

 if test "$os_win32" = no && ! $have_pthread; then
 	AC_CHECK_HEADERS(sched.h)
 	AC_SEARCH_LIBS(sched_yield,rt,AC_DEFINE(HAVE_SCHED_YIELD, 1, [Have sched_yield]))
 fi

 dnl ===========================================================================

 AC_CONFIG_FILES([
 Makefile
 src/Makefile
 src/harfbuzz-config.cmake
 util/Makefile
 test/Makefile
 test/api/Makefile
 test/fuzzing/Makefile
 test/shaping/Makefile
 test/shaping/data/Makefile
 test/shaping/data/aots/Makefile
 test/shaping/data/in-house/Makefile
 test/shaping/data/text-rendering-tests/Makefile
 test/subset/Makefile
 test/subset/data/Makefile
 docs/Makefile
 docs/version.xml
 ])

 AC_OUTPUT

 echo
 echo "C++ compiler version:"
 $CXX --version
 echo

 AC_MSG_NOTICE([

 Autotools still is our main and recommended build system for
 building *nix package out of the library yet we encourage
 packagers to experiment with our brand new meson port and
 give us feedback as our effort to migrate and unify all
 the other build systems we have tools to meson.

 ])


 AC_MSG_NOTICE([

 Build configuration:

 Unicode callbacks (you want at least one):
 	Builtin			true
 	Glib:			${have_glib}
 	ICU:			${have_icu}

 Font callbacks (the more the merrier):
 	FreeType:		${have_freetype}

 Tools used for command-line utilities:
 	Cairo:			${have_cairo}
 	Fontconfig:		${have_fontconfig}

 Additional shapers:
 	Graphite2:		${have_graphite2}

 Platform shapers (not normally needed):
 	CoreText:		${have_coretext}
 	DirectWrite:		${have_directwrite}
 	GDI:			${have_gdi}
 	Uniscribe:		${have_uniscribe}

 Other features:
 	Documentation:		${enable_gtk_doc}
 	GObject bindings:	${have_gobject}
 	Introspection:		${have_introspection}
 ])
	AC_PREREQ([2.64])
	AC_INIT([HarfBuzz],
	[2.6.8],
	[https://github.com/harfbuzz/harfbuzz/issues/new],
	[harfbuzz],
	[http://harfbuzz.org/])

	AC_CONFIG_MACRO_DIR([m4])
	AC_CONFIG_SRCDIR([src/harfbuzz.pc.in])
	AC_CONFIG_HEADERS([config.h])

	AM_INIT_AUTOMAKE([1.13.0 gnits tar-ustar dist-xz no-dist-gzip -Wall no-define color-tests -Wno-portability])
	AM_SILENT_RULES([yes])
	AX_CODE_COVERAGE

	# Initialize libtool
	m4_ifdef([AM_PROG_AR], [AM_PROG_AR])
	LT_PREREQ([2.2])
	LT_INIT([disable-static])

	# Check for programs
	AC_PROG_CC
	AC_PROG_CC_C99
	AM_PROG_CC_C_O
	AC_PROG_CXX
	AX_CXX_COMPILE_STDCXX(11)
	AC_SYS_LARGEFILE
	PKG_PROG_PKG_CONFIG([0.20])
	AM_MISSING_PROG([RAGEL], [ragel])
	AM_MISSING_PROG([GIT], [git])

	# Version
	m4_define(hb_version_triplet,m4_split(AC_PACKAGE_VERSION,[[.]]))
	m4_define(hb_version_major,m4_argn(1,hb_version_triplet))
	m4_define(hb_version_minor,m4_argn(2,hb_version_triplet))
	m4_define(hb_version_micro,m4_argn(3,hb_version_triplet))
	HB_VERSION_MAJOR=hb_version_major
	HB_VERSION_MINOR=hb_version_minor
	HB_VERSION_MICRO=hb_version_micro
	HB_VERSION=AC_PACKAGE_VERSION
	AC_SUBST(HB_VERSION_MAJOR)
	AC_SUBST(HB_VERSION_MINOR)
	AC_SUBST(HB_VERSION_MICRO)
	AC_SUBST(HB_VERSION)

	# Libtool version
	m4_define([hb_version_int],
	m4_eval(hb_version_major10000 + hb_version_minor100 + hb_version_micro))
	m4_if(m4_eval(hb_version_minor % 2), [1],
	dnl for unstable releases
	[m4_define([hb_libtool_revision], 0)],
	dnl for stable releases
	[m4_define([hb_libtool_revision], hb_version_micro)])
	m4_define([hb_libtool_age],
	m4_eval(hb_version_int - hb_libtool_revision))
	m4_define([hb_libtool_current],
	m4_eval(hb_libtool_age))
	HB_LIBTOOL_VERSION_INFO=hb_libtool_current:hb_libtool_revision:hb_libtool_age
	AC_SUBST(HB_LIBTOOL_VERSION_INFO)

	AC_ARG_WITH([libstdc++],
	[AS_HELP_STRING([--with-libstdc++=@<:@yes/no@:>@],
	[Allow linking with libstdc++ @<:@default=no@:>@])],
	[with_libstdcxx=$withval],
	[with_libstdcxx=no])
	AM_CONDITIONAL(WITH_LIBSTDCXX, [test "x$with_libstdcxx" = "xyes"])

	# Documentation
	have_gtk_doc=false
	m4_ifdef([GTK_DOC_CHECK], [
	GTK_DOC_CHECK([1.15],[--flavour no-tmpl])
	if test "x$enable_gtk_doc" = xyes; then
	have_gtk_doc=true
	fi
	], [
	AM_CONDITIONAL([ENABLE_GTK_DOC], false)
	])

	# Functions and headers
	AC_CHECK_FUNCS(atexit mprotect sysconf getpagesize mmap isatty roundf)
	AC_CHECK_HEADERS(unistd.h sys/mman.h stdbool.h)

	# Compiler flags
	AC_CANONICAL_HOST
	AC_CHECK_ALIGNOF([struct{char;}])
	if test "x$GCC" = "xyes"; then

	# Make symbols link locally
	AX_CHECK_LINK_FLAG([[-Bsymbolic-functions]], [LDFLAGS="$LDFLAGS -Bsymbolic-functions"])

	# Make it possible to not link to libstdc++
	# No threadsafe statics in C++ as we do it ourselves.
	# We don't use these features, so it's safe to disable them
	# even in the cases where we DO link to libstdc++.
	# Put -fno-rtti before $CXXFLAGS such that users can re-enable it
	# by overriding CXXFLAGS.
	CXXFLAGS="-fno-rtti $CXXFLAGS -fno-exceptions -fno-threadsafe-statics"

	case "$host" in
	--mingw*)
	;;
	*)
	# Hide inline methods
	CXXFLAGS="$CXXFLAGS -fvisibility-inlines-hidden"
	;;
	esac

	case "$host" in
	arm--)
	if test "x$ac_cv_alignof_struct_char__" != x1; then
	# Request byte alignment
	CXXFLAGS="$CXXFLAGS -mstructure-size-boundary=8"
	fi
	;;
	esac
	fi

	AM_CONDITIONAL(HAVE_GCC, test "x$GCC" = "xyes")

	hb_os_win32=no
	AC_MSG_CHECKING([for native Win32])
	case "$host" in
	--mingw*)
	hb_os_win32=yes
	;;
	esac
	AC_MSG_RESULT([$hb_os_win32])
	AM_CONDITIONAL(OS_WIN32, test "$hb_os_win32" = "yes")

	have_pthread=false
	AX_PTHREAD([have_pthread=true])
	if $have_pthread; then
	AC_DEFINE(HAVE_PTHREAD, 1, [Have POSIX threads])
	fi
	AM_CONDITIONAL(HAVE_PTHREAD, $have_pthread)

	dnl ==========================================================================

	AC_ARG_WITH(glib,
	[AS_HELP_STRING([--with-glib=@<:@yes/no/auto@:>@],
	[Use glib @<:@default=auto@:>@])],,
	[with_glib=auto])
	have_glib=false
	GLIB_DEPS="glib-2.0 >= 2.19.1"
	AC_SUBST(GLIB_DEPS)
	if test "x$with_glib" = "xyes" -o "x$with_glib" = "xauto"; then
	PKG_CHECK_MODULES(GLIB, $GLIB_DEPS, have_glib=true, :)
	fi
	if test "x$with_glib" = "xyes" -a "x$have_glib" != "xtrue"; then
	AC_MSG_ERROR([glib support requested but glib-2.0 not found])
	fi
	if $have_glib; then
	AC_DEFINE(HAVE_GLIB, 1, [Have glib2 library])
	fi
	AM_CONDITIONAL(HAVE_GLIB, $have_glib)

	dnl ===========================================================================

	AC_ARG_WITH(gobject,
	[AS_HELP_STRING([--with-gobject=@<:@yes/no/auto@:>@],
	[Use gobject @<:@default=no@:>@])],,
	[with_gobject=no])
	have_gobject=false
	if test "x$with_gobject" = "xyes" -o "x$with_gobject" = "xauto"; then
	PKG_CHECK_MODULES(GOBJECT, gobject-2.0 glib-2.0, have_gobject=true, :)
	fi
	if test "x$with_gobject" = "xyes" -a "x$have_gobject" != "xtrue"; then
	AC_MSG_ERROR([gobject support requested but gobject-2.0 / glib-2.0 not found])
	fi
	if $have_gobject; then
	AC_DEFINE(HAVE_GOBJECT, 1, [Have gobject2 library])
	GLIB_MKENUMS=`$PKG_CONFIG --variable=glib_mkenums glib-2.0`
	AC_SUBST(GLIB_MKENUMS)
	fi
	AM_CONDITIONAL(HAVE_GOBJECT, $have_gobject)
	AC_SUBST(have_gobject)

	dnl ===========================================================================


	dnl ===========================================================================
	# Gobject-Introspection
	have_introspection=false
	m4_ifdef([GOBJECT_INTROSPECTION_CHECK], [
	if $have_gobject; then
	GOBJECT_INTROSPECTION_CHECK([1.34.0])
	if test "x$found_introspection" = xyes; then
	have_introspection=true
	fi
	else
	AM_CONDITIONAL([HAVE_INTROSPECTION], false)
	fi
	], [
	AM_CONDITIONAL([HAVE_INTROSPECTION], false)
	])

	dnl ==========================================================================

	AC_ARG_WITH(cairo,
	[AS_HELP_STRING([--with-cairo=@<:@yes/no/auto@:>@],
	[Use cairo @<:@default=auto@:>@])],,
	[with_cairo=auto])
	have_cairo=false
	if test "x$with_cairo" = "xyes" -o "x$with_cairo" = "xauto"; then
	PKG_CHECK_MODULES(CAIRO, cairo >= 1.8.0, have_cairo=true, :)
	fi
	if test "x$with_cairo" = "xyes" -a "x$have_cairo" != "xtrue"; then
	AC_MSG_ERROR([cairo support requested but not found])
	fi
	if $have_cairo; then
	AC_DEFINE(HAVE_CAIRO, 1, [Have cairo graphics library])
	fi
	AM_CONDITIONAL(HAVE_CAIRO, $have_cairo)

	have_cairo_ft=false
	if $have_cairo; then
	PKG_CHECK_MODULES(CAIRO_FT, cairo-ft, have_cairo_ft=true, :)
	fi
	if $have_cairo_ft; then
	AC_DEFINE(HAVE_CAIRO_FT, 1, [Have cairo-ft support in cairo graphics library])
	fi
	AM_CONDITIONAL(HAVE_CAIRO_FT, $have_cairo_ft)

	dnl ==========================================================================

	AC_ARG_WITH(fontconfig,
	[AS_HELP_STRING([--with-fontconfig=@<:@yes/no/auto@:>@],
	[Use fontconfig @<:@default=auto@:>@])],,
	[with_fontconfig=auto])
	have_fontconfig=false
	if test "x$with_fontconfig" = "xyes" -o "x$with_fontconfig" = "xauto"; then
	PKG_CHECK_MODULES(FONTCONFIG, fontconfig, have_fontconfig=true, :)
	fi
	if test "x$with_fontconfig" = "xyes" -a "x$have_fontconfig" != "xtrue"; then
	AC_MSG_ERROR([fontconfig support requested but not found])
	fi
	if $have_fontconfig; then
	AC_DEFINE(HAVE_FONTCONFIG, 1, [Have fontconfig library])
	fi
	AM_CONDITIONAL(HAVE_FONTCONFIG, $have_fontconfig)

	dnl ==========================================================================

	AC_ARG_WITH(icu,
	[AS_HELP_STRING([--with-icu=@<:@yes/no/builtin/auto@:>@],
	[Use ICU @<:@default=auto@:>@])],,
	[with_icu=auto])
	have_icu=false
	if test "x$with_icu" = "xyes" -o "x$with_icu" = "xbuiltin" -o "x$with_icu" = "xauto"; then
	PKG_CHECK_MODULES(ICU, icu-uc, have_icu=true, :)

	dnl Fallback to icu-config if ICU pkg-config files could not be found
	if test "$have_icu" != "true"; then
	AC_CHECK_TOOL(ICU_CONFIG, icu-config, no)
	AC_MSG_CHECKING([for ICU by using icu-config fallback])
	if test "$ICU_CONFIG" != "no" && "$ICU_CONFIG" --version >/dev/null; then
	have_icu=true
	# We don't use --cflags as this gives us a lot of things that we don't
	# necessarily want, like debugging and optimization flags
	# See man (1) icu-config for more info.
	ICU_CFLAGS=`$ICU_CONFIG --cppflags`
	ICU_LIBS=`$ICU_CONFIG --ldflags-searchpath --ldflags-libsonly`
	AC_SUBST(ICU_CFLAGS)
	AC_SUBST(ICU_LIBS)
	AC_MSG_RESULT([yes])
	else
	AC_MSG_RESULT([no])
	fi
	fi
	fi
	if test \( "x$with_icu" = "xyes" -o "x$with_icu" = "xbuiltin" \) -a "x$have_icu" != "xtrue"; then
	AC_MSG_ERROR([icu support requested but icu-uc not found])
	fi

	if $have_icu; then
	CXXFLAGS="$CXXFLAGS `$PKG_CONFIG --variable=CXXFLAGS icu-uc`"
	AC_DEFINE(HAVE_ICU, 1, [Have ICU library])
	if test "x$with_icu" = "xbuiltin"; then
	AC_DEFINE(HAVE_ICU_BUILTIN, 1, [Use hb-icu Unicode callbacks])
	fi
	fi
	AM_CONDITIONAL(HAVE_ICU, $have_icu)
	AM_CONDITIONAL(HAVE_ICU_BUILTIN, $have_icu && test "x$with_icu" = "xbuiltin")

	dnl ===========================================================================

	AC_ARG_WITH(graphite2,
	[AS_HELP_STRING([--with-graphite2=@<:@yes/no/auto@:>@],
	[Use the graphite2 library @<:@default=no@:>@])],,
	[with_graphite2=no])
	have_graphite2=false
	GRAPHITE2_DEPS="graphite2 >= 1.2.0"
	AC_SUBST(GRAPHITE2_DEPS)
	if test "x$with_graphite2" = "xyes" -o "x$with_graphite2" = "xauto"; then
	PKG_CHECK_MODULES(GRAPHITE2, $GRAPHITE2_DEPS, have_graphite2=true, :)
	if test "x$have_graphite2" != "xtrue"; then
	# If pkg-config is not available, graphite2 can still be there
	ac_save_CFLAGS="$CFLAGS"
	ac_save_CPPFLAGS="$CPPFLAGS"
	CFLAGS="$CFLAGS $GRAPHITE2_CFLAGS"
	CPPFLAGS="$CPPFLAGS $GRAPHITE2_CFLAGS"
	AC_CHECK_HEADER(graphite2/Segment.h, have_graphite2=true, :)
	CPPFLAGS="$ac_save_CPPFLAGS"
	CFLAGS="$ac_save_CFLAGS"
	fi
	fi
	if test "x$with_graphite2" = "xyes" -a "x$have_graphite2" != "xtrue"; then
	AC_MSG_ERROR([graphite2 support requested but libgraphite2 not found])
	fi
	if $have_graphite2; then
	AC_DEFINE(HAVE_GRAPHITE2, 1, [Have Graphite2 library])
	fi
	AM_CONDITIONAL(HAVE_GRAPHITE2, $have_graphite2)

	dnl ==========================================================================

	AC_ARG_WITH(freetype,
	[AS_HELP_STRING([--with-freetype=@<:@yes/no/auto@:>@],
	[Use the FreeType library @<:@default=auto@:>@])],,
	[with_freetype=auto])
	have_freetype=false
	FREETYPE_DEPS="freetype2 >= 12.0.6"
	AC_SUBST(FREETYPE_DEPS)
	if test "x$with_freetype" = "xyes" -o "x$with_freetype" = "xauto"; then
	# See freetype/docs/VERSION.DLL; 12.0.6 means freetype-2.4.2
	PKG_CHECK_MODULES(FREETYPE, $FREETYPE_DEPS, have_freetype=true, :)
	fi
	if test "x$with_freetype" = "xyes" -a "x$have_freetype" != "xtrue"; then
	AC_MSG_ERROR([FreeType support requested but libfreetype2 not found])
	fi
	if $have_freetype; then
	AC_DEFINE(HAVE_FREETYPE, 1, [Have FreeType 2 library])
	save_libs=$LIBS
	LIBS="$LIBS $FREETYPE_LIBS"
	AC_CHECK_FUNCS(FT_Get_Var_Blend_Coordinates FT_Set_Var_Blend_Coordinates FT_Done_MM_Var)
	LIBS=$save_libs
	fi
	AM_CONDITIONAL(HAVE_FREETYPE, $have_freetype)

	dnl ===========================================================================

	AC_ARG_WITH(uniscribe,
	[AS_HELP_STRING([--with-uniscribe=@<:@yes/no/auto@:>@],
	[Use the Uniscribe library @<:@default=no@:>@])],,
	[with_uniscribe=no])
	have_uniscribe=false
	if test "x$with_uniscribe" = "xyes" -o "x$with_uniscribe" = "xauto"; then
	AC_CHECK_HEADERS(usp10.h windows.h, have_uniscribe=true)
	fi
	if test "x$with_uniscribe" = "xyes" -a "x$have_uniscribe" != "xtrue"; then
	AC_MSG_ERROR([uniscribe support requested but not found])
	fi
	if $have_uniscribe; then
	UNISCRIBE_CFLAGS=
	UNISCRIBE_LIBS="-lusp10 -lgdi32 -lrpcrt4"
	AC_SUBST(UNISCRIBE_CFLAGS)
	AC_SUBST(UNISCRIBE_LIBS)
	AC_DEFINE(HAVE_UNISCRIBE, 1, [Have Uniscribe library])
	fi
	AM_CONDITIONAL(HAVE_UNISCRIBE, $have_uniscribe)

	dnl ===========================================================================

	AC_ARG_WITH(gdi,
	[AS_HELP_STRING([--with-gdi=@<:@yes/no/auto@:>@],
	[Provide GDI integration helpers @<:@default=no@:>@])],,
	[with_gdi=no])
	have_gdi=false
	if test "x$with_gdi" = "xyes" -o "x$with_gdi" = "xauto"; then
	AC_CHECK_HEADERS(windows.h, have_gdi=true)
	fi
	if test "x$with_gdi" = "xyes" -a "x$have_gdi" != "xtrue"; then
	AC_MSG_ERROR([gdi support requested but not found])
	fi
	if $have_gdi; then
	GDI_CFLAGS=
	GDI_LIBS="-lgdi32"
	AC_SUBST(GDI_CFLAGS)
	AC_SUBST(GDI_LIBS)
	AC_DEFINE(HAVE_GDI, 1, [Have GDI library])
	fi
	AM_CONDITIONAL(HAVE_GDI, $have_gdi)

	dnl ===========================================================================

	AC_ARG_WITH(directwrite,
	[AS_HELP_STRING([--with-directwrite=@<:@yes/no/auto@:>@],
	[Use the DirectWrite library (experimental) @<:@default=no@:>@])],,
	[with_directwrite=no])
	have_directwrite=false
	AC_LANG_PUSH([C++])
	if test "x$with_directwrite" = "xyes" -o "x$with_directwrite" = "xauto"; then
	AC_CHECK_HEADERS(dwrite.h, have_directwrite=true)
	fi
	AC_LANG_POP([C++])
	if test "x$with_directwrite" = "xyes" -a "x$have_directwrite" != "xtrue"; then
	AC_MSG_ERROR([directwrite support requested but not found])
	fi
	if $have_directwrite; then
	DIRECTWRITE_CXXFLAGS=
	DIRECTWRITE_LIBS=
	AC_SUBST(DIRECTWRITE_CXXFLAGS)
	AC_SUBST(DIRECTWRITE_LIBS)
	AC_DEFINE(HAVE_DIRECTWRITE, 1, [Have DirectWrite library])
	fi
	AM_CONDITIONAL(HAVE_DIRECTWRITE, $have_directwrite)

	dnl ===========================================================================

	AC_ARG_WITH(coretext,
	[AS_HELP_STRING([--with-coretext=@<:@yes/no/auto@:>@],
	[Use CoreText @<:@default=no@:>@])],,
	[with_coretext=no])
	have_coretext=false
	if test "x$with_coretext" = "xyes" -o "x$with_coretext" = "xauto"; then
	AC_CHECK_TYPE(CTFontRef, have_coretext=true,, [#include <ApplicationServices/ApplicationServices.h>])

	if $have_coretext; then
	CORETEXT_CFLAGS=
	CORETEXT_LIBS="-framework ApplicationServices"
	AC_SUBST(CORETEXT_CFLAGS)
	AC_SUBST(CORETEXT_LIBS)
	else
	# On iOS CoreText and CoreGraphics are stand-alone frameworks
	if test "x$have_coretext" != "xtrue"; then
	# Check for a different symbol to avoid getting cached result.
	AC_CHECK_TYPE(CTRunRef, have_coretext=true,, [#include <CoreText/CoreText.h>])
	fi

	if $have_coretext; then
	CORETEXT_CFLAGS=
	CORETEXT_LIBS="-framework CoreText -framework CoreGraphics -framework CoreFoundation"
	AC_SUBST(CORETEXT_CFLAGS)
	AC_SUBST(CORETEXT_LIBS)
	fi
	fi
	fi
	if test "x$with_coretext" = "xyes" -a "x$have_coretext" != "xtrue"; then
	AC_MSG_ERROR([CoreText support requested but libcoretext not found])
	fi
	if $have_coretext; then
	AC_DEFINE(HAVE_CORETEXT, 1, [Have Core Text backend])
	fi
	AM_CONDITIONAL(HAVE_CORETEXT, $have_coretext)

	dnl ===========================================================================

	AC_CACHE_CHECK([for Intel atomic primitives], hb_cv_have_intel_atomic_primitives, [
	hb_cv_have_intel_atomic_primitives=false
	AC_TRY_LINK([
	void memory_barrier (void) { __sync_synchronize (); }
	int atomic_add (int *i) { return __sync_fetch_and_add (i, 1); }
	int mutex_trylock (int *m) { return __sync_lock_test_and_set (m, 1); }
	void mutex_unlock (int *m) { __sync_lock_release (m); }
	], [], hb_cv_have_intel_atomic_primitives=true
	)
	])
	if $hb_cv_have_intel_atomic_primitives; then
	AC_DEFINE(HAVE_INTEL_ATOMIC_PRIMITIVES, 1, [Have Intel __sync_* atomic primitives])
	fi

	dnl ===========================================================================

	AC_CACHE_CHECK([for Solaris atomic operations], hb_cv_have_solaris_atomic_ops, [
	hb_cv_have_solaris_atomic_ops=false
	AC_TRY_LINK([
	#include <atomic.h>
	/* This requires Solaris Studio 12.2 or newer: */
	#include <mbarrier.h>
	void memory_barrier (void) { __machine_rw_barrier (); }
	int atomic_add (volatile unsigned *i) { return atomic_add_int_nv (i, 1); }
	void atomic_ptr_cmpxchg (volatile void target, void cmp, void *newval) { return atomic_cas_ptr (target, cmp, newval); }
	], [], hb_cv_have_solaris_atomic_ops=true
	)
	])
	if $hb_cv_have_solaris_atomic_ops; then
	AC_DEFINE(HAVE_SOLARIS_ATOMIC_OPS, 1, [Have Solaris __machine__barrier and atomic_ operations])
	fi

	if test "$os_win32" = no && ! $have_pthread; then
	AC_CHECK_HEADERS(sched.h)
	AC_SEARCH_LIBS(sched_yield,rt,AC_DEFINE(HAVE_SCHED_YIELD, 1, [Have sched_yield]))
	fi

	dnl ===========================================================================

	AC_CONFIG_FILES([
	Makefile
	src/Makefile
	src/harfbuzz-config.cmake
	util/Makefile
	test/Makefile
	test/api/Makefile
	test/fuzzing/Makefile
	test/shaping/Makefile
	test/shaping/data/Makefile
	test/shaping/data/aots/Makefile
	test/shaping/data/in-house/Makefile
	test/shaping/data/text-rendering-tests/Makefile
	test/subset/Makefile
	test/subset/data/Makefile
	docs/Makefile
	docs/version.xml
	])

	AC_OUTPUT

	echo
	echo "C++ compiler version:"
	$CXX --version
	echo

	AC_MSG_NOTICE([

	Autotools still is our main and recommended build system for
	building *nix package out of the library yet we encourage
	packagers to experiment with our brand new meson port and
	give us feedback as our effort to migrate and unify all
	the other build systems we have tools to meson.

	])


	AC_MSG_NOTICE([

	Build configuration:

	Unicode callbacks (you want at least one):
	Builtin true
	Glib: ${have_glib}
	ICU: ${have_icu}

	Font callbacks (the more the merrier):
	FreeType: ${have_freetype}

	Tools used for command-line utilities:
	Cairo: ${have_cairo}
	Fontconfig: ${have_fontconfig}

	Additional shapers:
	Graphite2: ${have_graphite2}

	Platform shapers (not normally needed):
	CoreText: ${have_coretext}
	DirectWrite: ${have_directwrite}
	GDI: ${have_gdi}
	Uniscribe: ${have_uniscribe}

	Other features:
	Documentation: ${enable_gtk_doc}
	GObject bindings: ${have_gobject}
	Introspection: ${have_introspection}
	])