configure.ac - third_party/harfbuzz - Git at Google

 AC_PREREQ([2.64])
 AC_INIT([HarfBuzz],
         [1.7.5],
         [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-bzip2 no-dist-gzip -Wall no-define color-tests -Wno-portability])
 AM_SILENT_RULES([yes])

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

 # Check for programs
 AC_USE_SYSTEM_EXTENSIONS
 AC_PROG_CC
 AC_PROG_CC_C99
 AM_PROG_CC_C_O
 AC_PROG_CXX
 dnl AX_CXX_COMPILE_STDCXX(11, noext, optional)
 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 newlocale strtod_l setlinebuf)
 AC_CHECK_HEADERS(unistd.h sys/mman.h xlocale.h)

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

 	# Make symbols link locally
 	LDFLAGS="$LDFLAGS -Bsymbolic-functions"

 	# Assorted warnings
 	CXXFLAGS="$CXXFLAGS -Wcast-align"

 	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
 if test "$hb_os_win32" = no; then
 	AX_PTHREAD([have_pthread=true])
 fi
 if $have_pthread; then
 	AC_DEFINE(HAVE_PTHREAD, 1, [Have POSIX threads])
 fi
 AM_CONDITIONAL(HAVE_PTHREAD, $have_pthread)

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

 have_ot=true
 if $have_ot; then
 	AC_DEFINE(HAVE_OT, 1, [Have native OpenType Layout backend])
 fi
 AM_CONDITIONAL(HAVE_OT, $have_ot)

 have_fallback=true
 if $have_fallback; then
 	AC_DEFINE(HAVE_FALLBACK, 1, [Have simple TrueType Layout backend])
 fi
 AM_CONDITIONAL(HAVE_FALLBACK, $have_fallback)

 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)

 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(ucdn,
 	[AS_HELP_STRING([--with-ucdn=@<:@yes/no@:>@],
 			[Use builtin UCDN library @<:@default=yes@:>@])],,
 	[with_ucdn=yes])
 have_ucdn=false
 if test "x$with_ucdn" = "xyes"; then
 	have_ucdn=true
 fi
 if $have_ucdn; then
 	AC_DEFINE(HAVE_UCDN, 1, [Have UCDN Unicode functions])
 fi
 AM_CONDITIONAL(HAVE_UCDN, $have_ucdn)

 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"
 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(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="-ldwrite"
 	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/hb-version.h
 src/hb-ucdn/Makefile
 util/Makefile
 test/Makefile
 test/api/Makefile
 test/fuzzing/Makefile
 test/shaping/Makefile
 test/shaping/data/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

 AC_MSG_NOTICE([

 Build configuration:

 Unicode callbacks (you want at least one):
 	Builtin (UCDN):		${have_ucdn}
 	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 (the more the merrier):
 	Graphite2:		${have_graphite2}

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

 Other features:
 	Documentation:		${enable_gtk_doc}
 	GObject bindings:	${have_gobject}
 	Introspection:		${have_introspection}
 ])
	AC_PREREQ([2.64])
	AC_INIT([HarfBuzz],
	[1.7.5],
	[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-bzip2 no-dist-gzip -Wall no-define color-tests -Wno-portability])
	AM_SILENT_RULES([yes])

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

	# Check for programs
	AC_USE_SYSTEM_EXTENSIONS
	AC_PROG_CC
	AC_PROG_CC_C99
	AM_PROG_CC_C_O
	AC_PROG_CXX
	dnl AX_CXX_COMPILE_STDCXX(11, noext, optional)
	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 newlocale strtod_l setlinebuf)
	AC_CHECK_HEADERS(unistd.h sys/mman.h xlocale.h)

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

	# Make symbols link locally
	LDFLAGS="$LDFLAGS -Bsymbolic-functions"

	# Assorted warnings
	CXXFLAGS="$CXXFLAGS -Wcast-align"

	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
	if test "$hb_os_win32" = no; then
	AX_PTHREAD([have_pthread=true])
	fi
	if $have_pthread; then
	AC_DEFINE(HAVE_PTHREAD, 1, [Have POSIX threads])
	fi
	AM_CONDITIONAL(HAVE_PTHREAD, $have_pthread)

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

	have_ot=true
	if $have_ot; then
	AC_DEFINE(HAVE_OT, 1, [Have native OpenType Layout backend])
	fi
	AM_CONDITIONAL(HAVE_OT, $have_ot)

	have_fallback=true
	if $have_fallback; then
	AC_DEFINE(HAVE_FALLBACK, 1, [Have simple TrueType Layout backend])
	fi
	AM_CONDITIONAL(HAVE_FALLBACK, $have_fallback)

	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)

	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(ucdn,
	[AS_HELP_STRING([--with-ucdn=@<:@yes/no@:>@],
	[Use builtin UCDN library @<:@default=yes@:>@])],,
	[with_ucdn=yes])
	have_ucdn=false
	if test "x$with_ucdn" = "xyes"; then
	have_ucdn=true
	fi
	if $have_ucdn; then
	AC_DEFINE(HAVE_UCDN, 1, [Have UCDN Unicode functions])
	fi
	AM_CONDITIONAL(HAVE_UCDN, $have_ucdn)

	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"
	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(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="-ldwrite"
	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/hb-version.h
	src/hb-ucdn/Makefile
	util/Makefile
	test/Makefile
	test/api/Makefile
	test/fuzzing/Makefile
	test/shaping/Makefile
	test/shaping/data/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

	AC_MSG_NOTICE([

	Build configuration:

	Unicode callbacks (you want at least one):
	Builtin (UCDN): ${have_ucdn}
	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 (the more the merrier):
	Graphite2: ${have_graphite2}

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

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