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}
])