libphobos/configure.ac - gcc - Git at Google

 # Process this file with autoconf to produce a configure script.
 # Copyright (C) 2006-2018 Free Software Foundation, Inc.
 #
 # GCC is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by
 # the Free Software Foundation; either version 3, or (at your option)
 # any later version.
 #
 # GCC is distributed in the hope that it will be useful,
 # but WITHOUT ANY WARRANTY; without even the implied warranty of
 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 # GNU General Public License for more details.
 #
 # You should have received a copy of the GNU General Public License
 # along with GCC; see the file COPYING3.  If not see
 # <http://www.gnu.org/licenses/>.

 # This requires that you have your environment set-up to use explicit
 # versions of automake and autoconf.
 #
 #    export ACLOCAL=/usr/bin/aclocal-1.11
 #    export AUTOMAKE=/usr/bin/automake-1.11
 #    export AUTOM4TE=/usr/bin/autom4te2.64
 #    export AUTOCONF=/usr/bin/autoconf2.64
 #
 #    autoreconf2.64
 #

 AC_INIT(package-unused, version-unused,, libphobos)
 AC_CONFIG_SRCDIR(libdruntime/gcc/attribute.d)
 AC_CONFIG_HEADERS(config.h)

 AM_ENABLE_MULTILIB(, ..)
 AC_CANONICAL_SYSTEM

 target_alias=${target_alias-$target}
 AC_SUBST(target_alias)

 # 1.11.1: Require that version of automake.
 # foreign: Don't require README, INSTALL, NEWS, etc.
 # no-define: Don't define PACKAGE and VERSION.
 # no-dependencies: Don't generate automatic dependencies.
 #    (because it breaks when using bootstrap-lean, since some of the
 #    headers are gone at "make install" time).
 # -Wall: Issue all automake warnings.
 # -Wno-portability: Don't warn about constructs supported by GNU make.
 #    (because GCC requires GNU make anyhow).
 #  -Wno-override: Overrides used in testsuite.
 AM_INIT_AUTOMAKE([1.11.1 foreign no-dist no-define no-dependencies -Wall -Wno-portability -Wno-override])

 m4_rename([_AC_ARG_VAR_PRECIOUS],[glibd_PRECIOUS])
 m4_define([_AC_ARG_VAR_PRECIOUS],[])
 AM_PROG_AS
 AC_PROG_CC
 AC_PROG_GDC
 WITH_LOCAL_DRUNTIME([GDC_CHECK_COMPILE], [])

 m4_rename_force([glibd_PRECIOUS],[_AC_ARG_VAR_PRECIOUS])

 AC_SUBST(CFLAGS)
 AM_MAINTAINER_MODE
 AC_PROG_RANLIB
 AC_PROG_INSTALL
 AC_PROG_MAKE_SET

 # This should be inherited in the recursive make, but ensure it is defined.
 test "$AR" || AR=ar
 AC_SUBST(AR)

 CC_FOR_BUILD=${CC_FOR_BUILD:-gcc}
 AC_SUBST(CC_FOR_BUILD)
 AC_SUBST(CFLAGS_FOR_BUILD)

 # Enable libtool
 LT_INIT(dlopen)
 AM_PROG_LIBTOOL
 WITH_LOCAL_DRUNTIME([LT_LANG([D])], [])
 AM_CONDITIONAL([ENABLE_SHARED], [test "$enable_shared" = "yes"])
 AM_CONDITIONAL([ENABLE_STATIC], [test "$enable_static" = "yes"])

 # libtool variables for Phobos shared and position-independent compiles.
 #
 # Use phobos_compiler_shared_flag to designate the compile-time flags for
 # creating shared objects. Default: -fversion=Shared.
 #
 # Use phobos_compiler_pic_flag to designate the compile-time flags for
 # creating position-independent objects. This varies with the target
 # hardware and operating system, but is often: -fPIC.
 #
 # The distinction between pic and shared compilation flags is not present in
 # libtool, and so we make it here.  How it is handled is that in shared
 # compilations the `lt_prog_compiler_pic_D' variable is used to instead
 # ensure that conditional compilation of shared runtime code is compiled in.
 # The original PIC flags are then used in the compilation of every object.
 #
 # Why are objects destined for libgphobos.a compiled with -fPIC?
 # Because -fPIC is not harmful to use for objects destined for static
 # libraries. In addition, using -fPIC will allow the use of static
 # libgphobos.a in the creation of other D shared libraries.
 if test "$enable_shared" = yes; then
   phobos_compiler_pic_flag="$lt_prog_compiler_pic_D"
   phobos_compiler_shared_flag="-fversion=Shared"
 else
   phobos_compiler_pic_flag=
   phobos_compiler_shared_flag=
 fi
 AC_SUBST(phobos_compiler_pic_flag)
 AC_SUBST(phobos_compiler_shared_flag)

 # Override the libtool's pic_flag and pic_mode.
 # Do this step after AM_PROG_LIBTOOL, but before AC_OUTPUT.
 # NB: this impacts --with-pic and --without-pic.
 lt_prog_compiler_pic_D="$phobos_compiler_shared_flag"
 pic_mode='default'

 # Determine what GCC version number to use in filesystem paths.
 GCC_BASE_VER

 # libphobos/libdruntime specific options and feature detection
 DRUNTIME_CONFIGURE
 DRUNTIME_MULTILIB
 DRUNTIME_WERROR
 DRUNTIME_GC
 DRUNTIME_OS_UNIX
 DRUNTIME_OS_SOURCES
 DRUNTIME_OS_THREAD_MODEL
 DRUNTIME_OS_ARM_EABI_UNWINDER
 DRUNTIME_OS_MINFO_BRACKETING

 WITH_LOCAL_DRUNTIME([
   AC_LANG_PUSH([D])
   AC_SEARCH_LIBS([malloc], [c])
   DRUNTIME_LIBRARIES_THREAD
   AC_SEARCH_LIBS([cosf], [m])
   AC_SEARCH_LIBS([clock_gettime], [rt])
   DRUNTIME_ENABLE_ATOMIC_BUILTINS
   AC_LANG_POP([D])
 ], [-nophoboslib])

 DRUNTIME_LIBRARIES_ATOMIC
 DRUNTIME_LIBRARIES_BACKTRACE
 DRUNTIME_LIBRARIES_DLOPEN
 DRUNTIME_LIBRARIES_ZLIB
 DRUNTIME_INSTALL_DIRECTORIES

 # Add dependencies for libgphobos.spec file
 SPEC_PHOBOS_DEPS="$LIBS"
 AC_SUBST(SPEC_PHOBOS_DEPS)

 # Libdruntime / phobos soname version
 libtool_VERSION=76:3:0
 AC_SUBST(libtool_VERSION)

 # Set default flags (after DRUNTIME_WERROR!)
 if test -z "$GDCFLAGS"; then
     GDCFLAGS="-Wall $WERROR_FLAG -g -frelease -O2"
 fi
 AC_SUBST(GDCFLAGS)

 if test -z "$GDCFLAGSX"; then
     GDCFLAGSX="-Wall $WERROR_FLAG -g -fno-release -funittest"
 fi
 AC_SUBST(GDCFLAGSX)

 # Sanity check for the cross-compilation case:
 AC_CHECK_HEADER(stdio.h,:,
   [AC_MSG_ERROR([cannot find stdio.h.])])

 AC_CONFIG_FILES(Makefile)

 AC_CONFIG_FILES(libdruntime/gcc/config.d libdruntime/gcc/libbacktrace.d)
 AC_CONFIG_FILES(src/libgphobos.spec)
 AC_CONFIG_FILES([testsuite/testsuite_flags],[chmod +x testsuite/testsuite_flags])

 # Multilibs need MULTISUBDIR defined correctly in certain makefiles so
 # that multilib installs will end up installed in the correct place.
 # The testsuite needs it for multilib-aware ABI baseline files.
 # To work around this not being passed down from config-ml.in ->
 # srcdir/Makefile.am -> srcdir/{src,libdruntime,...}/Makefile.am, manually
 # append it here.  Only modify Makefiles that have just been created.
 #
 # Also, get rid of this simulated-VPATH thing that automake does.
 AC_CONFIG_FILES(AC_FOREACH([DIR], [libdruntime src testsuite], [DIR/Makefile ]),
   [cat > vpsed$$ << \_EOF
 s!`test -f '$<' || echo '$(srcdir)/'`!!
 _EOF
    sed -f vpsed$$ $ac_file > tmp$$
    mv tmp$$ $ac_file
    rm vpsed$$
    echo 'MULTISUBDIR =' >> $ac_file
    ml_norecursion=yes
    . ${multi_basedir}/config-ml.in
    AS_UNSET([ml_norecursion])
 ])

 AC_OUTPUT
	# Process this file with autoconf to produce a configure script.
	# Copyright (C) 2006-2018 Free Software Foundation, Inc.
	#
	# GCC is free software; you can redistribute it and/or modify
	# it under the terms of the GNU General Public License as published by
	# the Free Software Foundation; either version 3, or (at your option)
	# any later version.
	#
	# GCC is distributed in the hope that it will be useful,
	# but WITHOUT ANY WARRANTY; without even the implied warranty of
	# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	# GNU General Public License for more details.
	#
	# You should have received a copy of the GNU General Public License
	# along with GCC; see the file COPYING3. If not see
	# <http://www.gnu.org/licenses/>.

	# This requires that you have your environment set-up to use explicit
	# versions of automake and autoconf.
	#
	# export ACLOCAL=/usr/bin/aclocal-1.11
	# export AUTOMAKE=/usr/bin/automake-1.11
	# export AUTOM4TE=/usr/bin/autom4te2.64
	# export AUTOCONF=/usr/bin/autoconf2.64
	#
	# autoreconf2.64
	#

	AC_INIT(package-unused, version-unused,, libphobos)
	AC_CONFIG_SRCDIR(libdruntime/gcc/attribute.d)
	AC_CONFIG_HEADERS(config.h)

	AM_ENABLE_MULTILIB(, ..)
	AC_CANONICAL_SYSTEM

	target_alias=${target_alias-$target}
	AC_SUBST(target_alias)

	# 1.11.1: Require that version of automake.
	# foreign: Don't require README, INSTALL, NEWS, etc.
	# no-define: Don't define PACKAGE and VERSION.
	# no-dependencies: Don't generate automatic dependencies.
	# (because it breaks when using bootstrap-lean, since some of the
	# headers are gone at "make install" time).
	# -Wall: Issue all automake warnings.
	# -Wno-portability: Don't warn about constructs supported by GNU make.
	# (because GCC requires GNU make anyhow).
	# -Wno-override: Overrides used in testsuite.
	AM_INIT_AUTOMAKE([1.11.1 foreign no-dist no-define no-dependencies -Wall -Wno-portability -Wno-override])

	m4_rename([_AC_ARG_VAR_PRECIOUS],[glibd_PRECIOUS])
	m4_define([_AC_ARG_VAR_PRECIOUS],[])
	AM_PROG_AS
	AC_PROG_CC
	AC_PROG_GDC
	WITH_LOCAL_DRUNTIME([GDC_CHECK_COMPILE], [])

	m4_rename_force([glibd_PRECIOUS],[_AC_ARG_VAR_PRECIOUS])

	AC_SUBST(CFLAGS)
	AM_MAINTAINER_MODE
	AC_PROG_RANLIB
	AC_PROG_INSTALL
	AC_PROG_MAKE_SET

	# This should be inherited in the recursive make, but ensure it is defined.
	test "$AR" \|\| AR=ar
	AC_SUBST(AR)

	CC_FOR_BUILD=${CC_FOR_BUILD:-gcc}
	AC_SUBST(CC_FOR_BUILD)
	AC_SUBST(CFLAGS_FOR_BUILD)

	# Enable libtool
	LT_INIT(dlopen)
	AM_PROG_LIBTOOL
	WITH_LOCAL_DRUNTIME([LT_LANG([D])], [])
	AM_CONDITIONAL([ENABLE_SHARED], [test "$enable_shared" = "yes"])
	AM_CONDITIONAL([ENABLE_STATIC], [test "$enable_static" = "yes"])

	# libtool variables for Phobos shared and position-independent compiles.
	#
	# Use phobos_compiler_shared_flag to designate the compile-time flags for
	# creating shared objects. Default: -fversion=Shared.
	#
	# Use phobos_compiler_pic_flag to designate the compile-time flags for
	# creating position-independent objects. This varies with the target
	# hardware and operating system, but is often: -fPIC.
	#
	# The distinction between pic and shared compilation flags is not present in
	# libtool, and so we make it here. How it is handled is that in shared
	# compilations the `lt_prog_compiler_pic_D' variable is used to instead
	# ensure that conditional compilation of shared runtime code is compiled in.
	# The original PIC flags are then used in the compilation of every object.
	#
	# Why are objects destined for libgphobos.a compiled with -fPIC?
	# Because -fPIC is not harmful to use for objects destined for static
	# libraries. In addition, using -fPIC will allow the use of static
	# libgphobos.a in the creation of other D shared libraries.
	if test "$enable_shared" = yes; then
	phobos_compiler_pic_flag="$lt_prog_compiler_pic_D"
	phobos_compiler_shared_flag="-fversion=Shared"
	else
	phobos_compiler_pic_flag=
	phobos_compiler_shared_flag=
	fi
	AC_SUBST(phobos_compiler_pic_flag)
	AC_SUBST(phobos_compiler_shared_flag)

	# Override the libtool's pic_flag and pic_mode.
	# Do this step after AM_PROG_LIBTOOL, but before AC_OUTPUT.
	# NB: this impacts --with-pic and --without-pic.
	lt_prog_compiler_pic_D="$phobos_compiler_shared_flag"
	pic_mode='default'

	# Determine what GCC version number to use in filesystem paths.
	GCC_BASE_VER

	# libphobos/libdruntime specific options and feature detection
	DRUNTIME_CONFIGURE
	DRUNTIME_MULTILIB
	DRUNTIME_WERROR
	DRUNTIME_GC
	DRUNTIME_OS_UNIX
	DRUNTIME_OS_SOURCES
	DRUNTIME_OS_THREAD_MODEL
	DRUNTIME_OS_ARM_EABI_UNWINDER
	DRUNTIME_OS_MINFO_BRACKETING

	WITH_LOCAL_DRUNTIME([
	AC_LANG_PUSH([D])
	AC_SEARCH_LIBS([malloc], [c])
	DRUNTIME_LIBRARIES_THREAD
	AC_SEARCH_LIBS([cosf], [m])
	AC_SEARCH_LIBS([clock_gettime], [rt])
	DRUNTIME_ENABLE_ATOMIC_BUILTINS
	AC_LANG_POP([D])
	], [-nophoboslib])

	DRUNTIME_LIBRARIES_ATOMIC
	DRUNTIME_LIBRARIES_BACKTRACE
	DRUNTIME_LIBRARIES_DLOPEN
	DRUNTIME_LIBRARIES_ZLIB
	DRUNTIME_INSTALL_DIRECTORIES

	# Add dependencies for libgphobos.spec file
	SPEC_PHOBOS_DEPS="$LIBS"
	AC_SUBST(SPEC_PHOBOS_DEPS)

	# Libdruntime / phobos soname version
	libtool_VERSION=76:3:0
	AC_SUBST(libtool_VERSION)

	# Set default flags (after DRUNTIME_WERROR!)
	if test -z "$GDCFLAGS"; then
	GDCFLAGS="-Wall $WERROR_FLAG -g -frelease -O2"
	fi
	AC_SUBST(GDCFLAGS)

	if test -z "$GDCFLAGSX"; then
	GDCFLAGSX="-Wall $WERROR_FLAG -g -fno-release -funittest"
	fi
	AC_SUBST(GDCFLAGSX)

	# Sanity check for the cross-compilation case:
	AC_CHECK_HEADER(stdio.h,:,
	[AC_MSG_ERROR([cannot find stdio.h.])])

	AC_CONFIG_FILES(Makefile)

	AC_CONFIG_FILES(libdruntime/gcc/config.d libdruntime/gcc/libbacktrace.d)
	AC_CONFIG_FILES(src/libgphobos.spec)
	AC_CONFIG_FILES([testsuite/testsuite_flags],[chmod +x testsuite/testsuite_flags])

	# Multilibs need MULTISUBDIR defined correctly in certain makefiles so
	# that multilib installs will end up installed in the correct place.
	# The testsuite needs it for multilib-aware ABI baseline files.
	# To work around this not being passed down from config-ml.in ->
	# srcdir/Makefile.am -> srcdir/{src,libdruntime,...}/Makefile.am, manually
	# append it here. Only modify Makefiles that have just been created.
	#
	# Also, get rid of this simulated-VPATH thing that automake does.
	AC_CONFIG_FILES(AC_FOREACH([DIR], [libdruntime src testsuite], [DIR/Makefile ]),
	[cat > vpsed$$ << \_EOF
	s!`test -f '$<' \|\| echo '$(srcdir)/'`!!
	_EOF
	sed -f vpsed$$ $ac_file > tmp$$
	mv tmp$$ $ac_file
	rm vpsed$$
	echo 'MULTISUBDIR =' >> $ac_file
	ml_norecursion=yes
	. ${multi_basedir}/config-ml.in
	AS_UNSET([ml_norecursion])
	])

	AC_OUTPUT