281 lines
7.9 KiB
Plaintext
281 lines
7.9 KiB
Plaintext
# Process this file with autoconf to produce a configure script.
|
|
# Copyright (C) 1994-2013 Free Software Foundation, Inc.
|
|
# Originally contributed by Dave Love (d.love@dl.ac.uk).
|
|
#
|
|
#This file is part of GCC.
|
|
#
|
|
#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/>.
|
|
|
|
AC_PREREQ(2.64)
|
|
AC_INIT(package-unused, version-unused,, libobjc)
|
|
AC_CONFIG_SRCDIR([objc/objc.h])
|
|
GCC_TOPLEV_SUBDIRS
|
|
|
|
# We need the following definitions because AC_PROG_LIBTOOL relies on them
|
|
PACKAGE=libobjc
|
|
# Version is pulled out to make it a bit easier to change using sed.
|
|
VERSION=4:0:0
|
|
AC_SUBST(VERSION)
|
|
|
|
# This works around the fact that libtool configuration may change LD
|
|
# for this particular configuration, but some shells, instead of
|
|
# keeping the changes in LD private, export them just because LD is
|
|
# exported.
|
|
ORIGINAL_LD_FOR_MULTILIBS=$LD
|
|
|
|
# -------
|
|
# Options
|
|
# -------
|
|
|
|
# We use these options to decide which functions to include.
|
|
AC_ARG_WITH(target-subdir,
|
|
[ --with-target-subdir=SUBDIR
|
|
configuring in a subdirectory])
|
|
AC_ARG_WITH(cross-host,
|
|
[ --with-cross-host=HOST configuring with a cross compiler])
|
|
|
|
AC_MSG_CHECKING([for --enable-version-specific-runtime-libs])
|
|
AC_ARG_ENABLE(version-specific-runtime-libs,
|
|
[ --enable-version-specific-runtime-libs Specify that runtime libraries should be installed in a compiler-specific directory ],
|
|
[case "$enableval" in
|
|
yes) version_specific_libs=yes ;;
|
|
no) version_specific_libs=no ;;
|
|
*) AC_MSG_ERROR([Unknown argument to enable/disable version-specific libs]);;
|
|
esac],
|
|
[version_specific_libs=no])
|
|
AC_MSG_RESULT($version_specific_libs)
|
|
|
|
AC_ARG_ENABLE(objc-gc,
|
|
[ --enable-objc-gc enable the use of Boehm's garbage collector with
|
|
the GNU Objective-C runtime.],
|
|
[case $enable_objc_gc in
|
|
no)
|
|
OBJC_GCFLAGS=''
|
|
OBJC_BOEHM_GC=''
|
|
OBJC_BOEHM_GC_INCLUDES=''
|
|
;;
|
|
*)
|
|
OBJC_GCFLAGS='-DOBJC_WITH_GC=1'
|
|
OBJC_BOEHM_GC='libobjc_gc$(libsuffix).la'
|
|
OBJC_BOEHM_GC_INCLUDES='-I$(top_srcdir)/../boehm-gc/include -I../boehm-gc/include'
|
|
;;
|
|
esac],
|
|
[OBJC_GCFLAGS=''; OBJC_BOEHM_GC=''; OBJC_BOEHM_GC_INCLUDES=''])
|
|
AC_SUBST(OBJC_GCFLAGS)
|
|
AC_SUBST(OBJC_BOEHM_GC)
|
|
AC_SUBST(OBJC_BOEHM_GC_INCLUDES)
|
|
|
|
# -----------
|
|
# Directories
|
|
# -----------
|
|
|
|
# Find the rest of the source tree framework.
|
|
AM_ENABLE_MULTILIB(, ..)
|
|
|
|
AC_CANONICAL_SYSTEM
|
|
ACX_NONCANONICAL_TARGET
|
|
|
|
# Export source directory.
|
|
# These need to be absolute paths, yet at the same time need to
|
|
# canonicalize only relative paths, because then amd will not unmount
|
|
# drives. Thus the use of PWDCMD: set it to 'pawd' or 'amq -w' if using amd.
|
|
case $srcdir in
|
|
[\\/$]* | ?:[\\/]*) glibcpp_srcdir=${srcdir} ;;
|
|
*) glibcpp_srcdir=`cd "$srcdir" && ${PWDCMD-pwd} || echo "$srcdir"` ;;
|
|
esac
|
|
AC_SUBST(glibcpp_srcdir)
|
|
|
|
# Calculate toolexeclibdir
|
|
# Also toolexecdir, though it's only used in toolexeclibdir
|
|
case ${version_specific_libs} in
|
|
yes)
|
|
# Need the gcc compiler version to know where to install libraries
|
|
# and header files if --enable-version-specific-runtime-libs option
|
|
# is selected.
|
|
toolexecdir='$(libdir)/gcc/$(target_noncanonical)'
|
|
toolexeclibdir='$(toolexecdir)/$(gcc_version)$(MULTISUBDIR)'
|
|
;;
|
|
no)
|
|
if test -n "$with_cross_host" &&
|
|
test x"$with_cross_host" != x"no"; then
|
|
# Install a library built with a cross compiler in tooldir, not libdir.
|
|
toolexecdir='$(exec_prefix)/$(target_noncanonical)'
|
|
toolexeclibdir='$(toolexecdir)/lib'
|
|
else
|
|
toolexecdir='$(libdir)/gcc-lib/$(target_noncanonical)'
|
|
toolexeclibdir='$(libdir)'
|
|
fi
|
|
multi_os_directory=`$CC -print-multi-os-directory`
|
|
case $multi_os_directory in
|
|
.) ;; # Avoid trailing /.
|
|
*) toolexeclibdir=$toolexeclibdir/$multi_os_directory ;;
|
|
esac
|
|
;;
|
|
esac
|
|
AC_SUBST(toolexecdir)
|
|
AC_SUBST(toolexeclibdir)
|
|
|
|
# Figure out if we want to name the include directory and the
|
|
# library name changes differently.
|
|
includedirname=include
|
|
libsuffix=
|
|
case "${host}" in
|
|
*-darwin*)
|
|
# Darwin is the only target so far that needs a different include directory.
|
|
includedirname=include-gnu-runtime
|
|
libsuffix=-gnu
|
|
;;
|
|
esac
|
|
AC_SUBST(includedirname)
|
|
AC_SUBST(libsuffix)
|
|
|
|
AC_CONFIG_HEADERS(config.h)
|
|
|
|
# --------
|
|
# Programs
|
|
# --------
|
|
|
|
GCC_NO_EXECUTABLES
|
|
|
|
# We must force CC to /not/ be a precious variable; otherwise
|
|
# the wrong, non-multilib-adjusted value will be used in multilibs.
|
|
# As a side effect, we have to subst CFLAGS ourselves.
|
|
m4_rename([_AC_ARG_VAR_PRECIOUS],[real_PRECIOUS])
|
|
m4_define([_AC_ARG_VAR_PRECIOUS],[])
|
|
AC_PROG_CC
|
|
m4_rename_force([real_PRECIOUS],[_AC_ARG_VAR_PRECIOUS])
|
|
|
|
# extra LD Flags which are required for targets
|
|
ACX_LT_HOST_FLAGS
|
|
case "${host}" in
|
|
*-darwin*)
|
|
# Darwin needs -single_module when linking libobjc
|
|
extra_ldflags_libobjc='$(lt_host_flags) -Wl,-single_module'
|
|
;;
|
|
*-cygwin*|*-mingw*)
|
|
# Tell libtool to build DLLs on Windows
|
|
extra_ldflags_libobjc='$(lt_host_flags)'
|
|
;;
|
|
esac
|
|
AC_SUBST(extra_ldflags_libobjc)
|
|
|
|
AC_SUBST(CFLAGS)
|
|
|
|
AC_CHECK_TOOL(AS, as)
|
|
AC_CHECK_TOOL(AR, ar)
|
|
AC_CHECK_TOOL(RANLIB, ranlib, :)
|
|
AC_PROG_INSTALL
|
|
|
|
AM_MAINTAINER_MODE
|
|
|
|
# Enable Win32 DLL on MS Windows - FIXME
|
|
AC_LIBTOOL_WIN32_DLL
|
|
|
|
AC_PROG_LIBTOOL
|
|
|
|
AM_PROG_CC_C_O
|
|
|
|
AC_PROG_MAKE_SET
|
|
|
|
# -------
|
|
# Headers
|
|
# -------
|
|
|
|
# Sanity check for the cross-compilation case:
|
|
AC_CHECK_HEADER(stdio.h,:,
|
|
[AC_MSG_ERROR([Can't find stdio.h.
|
|
You must have a usable C system for the target already installed, at least
|
|
including headers and, preferably, the library, before you can configure
|
|
the Objective C runtime system. If necessary, install gcc now with
|
|
\`LANGUAGES=c', then the target library, then build with \`LANGUAGES=objc'.])])
|
|
|
|
AC_HEADER_STDC
|
|
|
|
AC_CHECK_HEADERS(sched.h)
|
|
|
|
# -----------
|
|
# Miscellanea
|
|
# -----------
|
|
|
|
# Check if we have thread-local storage
|
|
GCC_CHECK_TLS
|
|
|
|
AC_MSG_CHECKING([for exception model to use])
|
|
AC_LANG_PUSH(C)
|
|
AC_ARG_ENABLE(sjlj-exceptions,
|
|
AS_HELP_STRING([--enable-sjlj-exceptions],
|
|
[force use of builtin_setjmp for exceptions]),
|
|
[:],
|
|
[dnl Botheration. Now we've got to detect the exception model.
|
|
dnl Link tests against libgcc.a are problematic since -- at least
|
|
dnl as of this writing -- we've not been given proper -L bits for
|
|
dnl single-tree newlib and libgloss.
|
|
dnl
|
|
dnl This is what AC_TRY_COMPILE would do if it didn't delete the
|
|
dnl conftest files before we got a change to grep them first.
|
|
cat > conftest.$ac_ext << EOF
|
|
[#]line __oline__ "configure"
|
|
@interface Frob
|
|
@end
|
|
@implementation Frob
|
|
@end
|
|
int proc();
|
|
int foo()
|
|
{
|
|
@try {
|
|
return proc();
|
|
}
|
|
@catch (Frob* ex) {
|
|
return 0;
|
|
}
|
|
}
|
|
EOF
|
|
old_CFLAGS="$CFLAGS"
|
|
dnl work around that we don't have Objective-C support in autoconf
|
|
CFLAGS="-x objective-c -fgnu-runtime -fobjc-exceptions -S"
|
|
if AC_TRY_EVAL(ac_compile); then
|
|
if grep _Unwind_SjLj_Resume conftest.s >/dev/null 2>&1 ; then
|
|
enable_sjlj_exceptions=yes
|
|
elif grep _Unwind_Resume conftest.s >/dev/null 2>&1 ; then
|
|
enable_sjlj_exceptions=no
|
|
fi
|
|
fi
|
|
CFLAGS="$old_CFLAGS"
|
|
rm -f conftest*])
|
|
if test x$enable_sjlj_exceptions = xyes; then
|
|
AC_DEFINE(SJLJ_EXCEPTIONS, 1,
|
|
[Define if the compiler is configured for setjmp/longjmp exceptions.])
|
|
ac_exception_model_name=sjlj
|
|
elif test x$enable_sjlj_exceptions = xno; then
|
|
ac_exception_model_name="call frame"
|
|
else
|
|
AC_MSG_ERROR([unable to detect exception model])
|
|
fi
|
|
AC_LANG_POP(C)
|
|
AC_MSG_RESULT($ac_exception_model_name)
|
|
|
|
# ------
|
|
# Output
|
|
# ------
|
|
|
|
if test ${multilib} = yes; then
|
|
multilib_arg="--enable-multilib"
|
|
else
|
|
multilib_arg=
|
|
fi
|
|
|
|
AC_CONFIG_FILES([Makefile])
|
|
AC_OUTPUT
|