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Diffstat (limited to 'm4/objc.m4')
| -rw-r--r-- | m4/objc.m4 | 253 |
1 files changed, 253 insertions, 0 deletions
diff --git a/m4/objc.m4 b/m4/objc.m4 new file mode 100644 index 000000000..73dd8b6a0 --- /dev/null +++ b/m4/objc.m4 @@ -0,0 +1,253 @@ +# Extracted from autoconf 2.61 to obtain Objective C macros. +# Only expand if the version of autoconf in use doesn't have the macro itself. +m4_ifdef([AC_PROG_OBJC], [], [ + +# This file is part of Autoconf. -*- Autoconf -*- +# Programming languages support. +# Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006 Free Software +# Foundation, Inc. +# +# This program 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 2, or (at your option) +# any later version. +# +# This program 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 this program; if not, write to the Free Software +# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA +# 02110-1301, USA. +# +# As a special exception, the Free Software Foundation gives unlimited +# permission to copy, distribute and modify the configure scripts that +# are the output of Autoconf. You need not follow the terms of the GNU +# General Public License when using or distributing such scripts, even +# though portions of the text of Autoconf appear in them. The GNU +# General Public License (GPL) does govern all other use of the material +# that constitutes the Autoconf program. +# +# Certain portions of the Autoconf source text are designed to be copied +# (in certain cases, depending on the input) into the output of +# Autoconf. We call these the "data" portions. The rest of the Autoconf +# source text consists of comments plus executable code that decides which +# of the data portions to output in any given case. We call these +# comments and executable code the "non-data" portions. Autoconf never +# copies any of the non-data portions into its output. +# +# This special exception to the GPL applies to versions of Autoconf +# released by the Free Software Foundation. When you make and +# distribute a modified version of Autoconf, you may extend this special +# exception to the GPL to apply to your modified version as well, *unless* +# your modified version has the potential to copy into its output some +# of the text that was the non-data portion of the version that you started +# with. (In other words, unless your change moves or copies text from +# the non-data portions to the data portions.) If your modification has +# such potential, you must delete any notice of this special exception +# to the GPL from your modified version. +# +# Written by David MacKenzie, with help from +# Akim Demaille, Paul Eggert, +# Franc,ois Pinard, Karl Berry, Richard Pixley, Ian Lance Taylor, +# Roland McGrath, Noah Friedman, david d zuhn, and many others. + +# ------------------------------ # +# 1d. The Objective C language. # +# ------------------------------ # + + +# AC_LANG(Objective C) +# -------------------- +m4_define([AC_LANG(Objective C)], +[ac_ext=m +ac_cpp='$OBJCPP $CPPFLAGS' +ac_compile='$OBJC -c $OBJCFLAGS $CPPFLAGS conftest.$ac_ext >&AS_MESSAGE_LOG_FD' +ac_link='$OBJC -o conftest$ac_exeext $OBJCFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&AS_MESSAGE_LOG_FD' +ac_compiler_gnu=$ac_cv_objc_compiler_gnu +]) + + +# AC_LANG_OBJC +# ------------ +AU_DEFUN([AC_LANG_OBJC], [AC_LANG(Objective C)]) + + +# _AC_LANG_ABBREV(Objective C) +# ---------------------------- +m4_define([_AC_LANG_ABBREV(Objective C)], [objc]) + + +# _AC_LANG_PREFIX(Objective C) +# ---------------------------- +m4_define([_AC_LANG_PREFIX(Objective C)], [OBJC]) + + +# ------------------------- # +# 2d. Objective C sources. # +# ------------------------- # + +# AC_LANG_SOURCE(Objective C)(BODY) +# --------------------------------- +m4_copy([AC_LANG_SOURCE(C)], [AC_LANG_SOURCE(Objective C)]) + + +# AC_LANG_PROGRAM(Objective C)([PROLOGUE], [BODY]) +# ------------------------------------------------ +m4_copy([AC_LANG_PROGRAM(C)], [AC_LANG_PROGRAM(Objective C)]) + + +# AC_LANG_CALL(Objective C)(PROLOGUE, FUNCTION) +# --------------------------------------------- +m4_copy([AC_LANG_CALL(C)], [AC_LANG_CALL(Objective C)]) + + +# AC_LANG_FUNC_LINK_TRY(Objective C)(FUNCTION) +# -------------------------------------------- +m4_copy([AC_LANG_FUNC_LINK_TRY(C)], [AC_LANG_FUNC_LINK_TRY(Objective C)]) + + +# AC_LANG_BOOL_COMPILE_TRY(Objective C)(PROLOGUE, EXPRESSION) +# ----------------------------------------------------------- +m4_copy([AC_LANG_BOOL_COMPILE_TRY(C)], [AC_LANG_BOOL_COMPILE_TRY(Objective C)]) + + +# AC_LANG_INT_SAVE(Objective C)(PROLOGUE, EXPRESSION) +# --------------------------------------------------- +m4_copy([AC_LANG_INT_SAVE(C)], [AC_LANG_INT_SAVE(Objective C)]) + + +# ------------------------------ # +# 3d. The Objective C compiler. # +# ------------------------------ # + +# AC_LANG_PREPROC(Objective C) +# ---------------------------- +# Find the Objective C preprocessor. Must be AC_DEFUN'd to be AC_REQUIRE'able. +m4_defun([AC_LANG_PREPROC(Objective C)], +[AC_REQUIRE([AC_PROG_OBJCPP])]) + + +# AC_PROG_OBJCPP +# -------------- +# Find a working Objective C preprocessor. +AC_DEFUN([AC_PROG_OBJCPP], +[AC_REQUIRE([AC_PROG_OBJC])dnl +AC_ARG_VAR([OBJCPP], [Objective C preprocessor])dnl +_AC_ARG_VAR_CPPFLAGS()dnl +AC_LANG_PUSH(Objective C)dnl +AC_MSG_CHECKING([how to run the Objective C preprocessor]) +if test -z "$OBJCPP"; then + AC_CACHE_VAL(ac_cv_prog_OBJCPP, + [dnl + # Double quotes because OBJCPP needs to be expanded + for OBJCPP in "$OBJC -E" "/lib/cpp" + do + _AC_PROG_PREPROC_WORKS_IFELSE([break]) + done + ac_cv_prog_OBJCPP=$OBJCPP + ])dnl + OBJCPP=$ac_cv_prog_OBJCPP +else + ac_cv_prog_OBJCPP=$OBJCPP +fi +AC_MSG_RESULT([$OBJCPP]) +_AC_PROG_PREPROC_WORKS_IFELSE([], + [AC_MSG_FAILURE([Objective C preprocessor "$OBJCPP" fails sanity check])]) +AC_SUBST(OBJCPP)dnl +AC_LANG_POP(Objective C)dnl +])# AC_PROG_OBJCPP + + +# AC_LANG_COMPILER(Objective C) +# ----------------------------- +# Find the Objective C compiler. Must be AC_DEFUN'd to be AC_REQUIRE'able. +m4_defun([AC_LANG_COMPILER(Objective C)], +[AC_REQUIRE([AC_PROG_OBJC])]) + + + +# AC_PROG_OBJC([LIST-OF-COMPILERS]) +# --------------------------------- +# LIST-OF-COMPILERS is a space separated list of Objective C compilers to +# search for (if not specified, a default list is used). This just gives +# the user an opportunity to specify an alternative search list for the +# Objective C compiler. +# objcc StepStone Objective-C compiler (also "standard" name for OBJC) +# objc David Stes' POC. If you installed this, you likely want it. +# cc Native C compiler (for instance, Apple). +# CC You never know. +AN_MAKEVAR([OBJC], [AC_PROG_OBJC]) +AN_PROGRAM([objcc], [AC_PROG_OBJC]) +AN_PROGRAM([objc], [AC_PROG_OBJC]) +AC_DEFUN([AC_PROG_OBJC], +[AC_LANG_PUSH(Objective C)dnl +AC_ARG_VAR([OBJC], [Objective C compiler command])dnl +AC_ARG_VAR([OBJCFLAGS], [Objective C compiler flags])dnl +_AC_ARG_VAR_LDFLAGS()dnl +dnl _AC_ARG_VAR_LIBS()dnl +_AC_ARG_VAR_CPPFLAGS()dnl +_AC_ARG_VAR_PRECIOUS([OBJC])dnl +AC_CHECK_TOOLS(OBJC, + [m4_default([$1], [gcc objcc objc cc CC])], + gcc) +# Provide some information about the compiler. +echo "$as_me:$LINENO:" \ + "checking for _AC_LANG compiler version" >&AS_MESSAGE_LOG_FD +ac_compiler=`set X $ac_compile; echo $[2]` +_AC_EVAL([$ac_compiler --version </dev/null >&AS_MESSAGE_LOG_FD]) +_AC_EVAL([$ac_compiler -v </dev/null >&AS_MESSAGE_LOG_FD]) +_AC_EVAL([$ac_compiler -V </dev/null >&AS_MESSAGE_LOG_FD]) + +m4_expand_once([_AC_COMPILER_EXEEXT])[]dnl +m4_expand_once([_AC_COMPILER_OBJEXT])[]dnl +_AC_LANG_COMPILER_GNU +GOBJC=`test $ac_compiler_gnu = yes && echo yes` +_AC_PROG_OBJC_G +AC_LANG_POP(Objective C)dnl +])# AC_PROG_OBJC + + +# _AC_PROG_OBJC_G +# --------------- +# Check whether -g works, even if OBJCFLAGS is set, in case the package +# plays around with OBJCFLAGS (such as to build both debugging and +# normal versions of a library), tasteless as that idea is. +# Don't consider -g to work if it generates warnings when plain compiles don't. +m4_define([_AC_PROG_OBJC_G], +[ac_test_OBJCFLAGS=${OBJCFLAGS+set} +ac_save_OBJCFLAGS=$OBJCFLAGS +AC_CACHE_CHECK(whether $OBJC accepts -g, ac_cv_prog_objc_g, + [ac_save_objc_werror_flag=$ac_objc_werror_flag + ac_objc_werror_flag=yes + ac_cv_prog_objc_g=no + OBJCFLAGS="-g" + _AC_COMPILE_IFELSE([AC_LANG_PROGRAM()], + [ac_cv_prog_objc_g=yes], + [OBJCFLAGS="" + _AC_COMPILE_IFELSE([AC_LANG_PROGRAM()], + [], + [ac_objc_werror_flag=$ac_save_objc_werror_flag + OBJCFLAGS="-g" + _AC_COMPILE_IFELSE([AC_LANG_PROGRAM()], + [ac_cv_prog_objc_g=yes])])]) + ac_objc_werror_flag=$ac_save_objc_werror_flag]) +if test "$ac_test_OBJCFLAGS" = set; then + OBJCFLAGS=$ac_save_OBJCFLAGS +elif test $ac_cv_prog_objc_g = yes; then + if test "$GOBJC" = yes; then + OBJCFLAGS="-g -O2" + else + OBJCFLAGS="-g" + fi +else + if test "$GOBJC" = yes; then + OBJCFLAGS="-O2" + else + OBJCFLAGS= + fi +fi[]dnl +])# _AC_PROG_OBJC_G +])dnl m4_ifdef([AC_PROG_OBJC]) |