diff options
Diffstat (limited to 'm4')
| -rw-r--r-- | m4/ax_check_user_namespace.m4 | 54 | ||||
| -rw-r--r-- | m4/ax_check_uts_namespace.m4 | 76 | ||||
| -rw-r--r-- | m4/ax_code_coverage.m4 | 219 | ||||
| -rw-r--r-- | m4/ax_cxx_compile_stdcxx_11.m4 | 163 | ||||
| -rw-r--r-- | m4/ax_pthread.m4 | 332 | ||||
| -rw-r--r-- | m4/cares-confopts.m4 | 42 | ||||
| -rw-r--r-- | m4/xc-am-iface.m4 | 253 |
7 files changed, 1139 insertions, 0 deletions
diff --git a/m4/ax_check_user_namespace.m4 b/m4/ax_check_user_namespace.m4 new file mode 100644 index 0000000..27ba698 --- /dev/null +++ b/m4/ax_check_user_namespace.m4 @@ -0,0 +1,54 @@ +# -*- Autoconf -*- + +# SYNOPSIS +# +# AX_CHECK_USER_NAMESPACE +# +# DESCRIPTION +# +# This macro checks whether the local system supports Linux user namespaces. +# If so, it calls AC_DEFINE(HAVE_USER_NAMESPACE). + +AC_DEFUN([AX_CHECK_USER_NAMESPACE],[dnl + AC_CACHE_CHECK([whether user namespaces are supported], + ax_cv_user_namespace,[ + AC_LANG_PUSH([C]) + AC_RUN_IFELSE([AC_LANG_SOURCE([[ +#define _GNU_SOURCE +#include <fcntl.h> +#include <sched.h> +#include <signal.h> +#include <stdio.h> +#include <string.h> +#include <sys/types.h> +#include <sys/wait.h> + +int userfn(void *d) { + usleep(100000); /* synchronize by sleep */ + return (getuid() != 0); +} +char userst[1024*1024]; +int main() { + char buffer[1024]; + int rc, status, fd; + pid_t child = clone(userfn, userst + 1024*1024, CLONE_NEWUSER|SIGCHLD, 0); + if (child < 0) return 1; + + sprintf(buffer, "/proc/%d/uid_map", child); + fd = open(buffer, O_CREAT|O_WRONLY|O_TRUNC, 0755); + sprintf(buffer, "0 %d 1\n", getuid()); + write(fd, buffer, strlen(buffer)); + close(fd); + + rc = waitpid(child, &status, 0); + if (rc <= 0) return 1; + if (!WIFEXITED(status)) return 1; + return WEXITSTATUS(status); +} + ]])],[ax_cv_user_namespace=yes],[ax_cv_user_namespace=no],[ax_cv_user_namespace=no]) + AC_LANG_POP([C]) + ]) + if test "$ax_cv_user_namespace" = yes; then + AC_DEFINE([HAVE_USER_NAMESPACE],[1],[Whether user namespaces are available]) + fi +]) # AX_CHECK_USER_NAMESPACE diff --git a/m4/ax_check_uts_namespace.m4 b/m4/ax_check_uts_namespace.m4 new file mode 100644 index 0000000..cf7b145 --- /dev/null +++ b/m4/ax_check_uts_namespace.m4 @@ -0,0 +1,76 @@ +# -*- Autoconf -*- + +# SYNOPSIS +# +# AX_CHECK_UTS_NAMESPACE +# +# DESCRIPTION +# +# This macro checks whether the local system supports Linux UTS namespaces. +# Also requires user namespaces to be available, so that non-root users +# can enter the namespace. +# If so, it calls AC_DEFINE(HAVE_UTS_NAMESPACE). + +AC_DEFUN([AX_CHECK_UTS_NAMESPACE],[dnl + AC_CACHE_CHECK([whether UTS namespaces are supported], + ax_cv_uts_namespace,[ + AC_LANG_PUSH([C]) + AC_RUN_IFELSE([AC_LANG_SOURCE([[ +#define _GNU_SOURCE +#include <sched.h> +#include <signal.h> +#include <stdio.h> +#include <string.h> +#include <fcntl.h> +#include <unistd.h> +#include <sys/types.h> +#include <sys/wait.h> + +int utsfn(void *d) { + char buffer[1024]; + const char *name = "autoconftest"; + int rc = sethostname(name, strlen(name)); + if (rc != 0) return 1; + gethostname(buffer, 1024); + return (strcmp(buffer, name) != 0); +} + +char st2[1024*1024]; +int fn(void *d) { + pid_t child; + int rc, status; + usleep(100000); /* synchronize by sleep */ + if (getuid() != 0) return 1; + child = clone(utsfn, st2 + 1024*1024, CLONE_NEWUTS|SIGCHLD, 0); + if (child < 0) return 1; + rc = waitpid(child, &status, 0); + if (rc <= 0) return 1; + if (!WIFEXITED(status)) return 1; + return WEXITSTATUS(status); +} +char st[1024*1024]; +int main() { + char buffer[1024]; + int rc, status, fd; + pid_t child = clone(fn, st + 1024*1024, CLONE_NEWUSER|SIGCHLD, 0); + if (child < 0) return 1; + + sprintf(buffer, "/proc/%d/uid_map", child); + fd = open(buffer, O_CREAT|O_WRONLY|O_TRUNC, 0755); + sprintf(buffer, "0 %d 1\n", getuid()); + write(fd, buffer, strlen(buffer)); + close(fd); + + rc = waitpid(child, &status, 0); + if (rc <= 0) return 1; + if (!WIFEXITED(status)) return 1; + return WEXITSTATUS(status); +} +]]) + ],[ax_cv_uts_namespace=yes],[ax_cv_uts_namespace=no],[ax_cv_uts_namespace=no]) + AC_LANG_POP([C]) + ]) + if test "$ax_cv_uts_namespace" = yes; then + AC_DEFINE([HAVE_UTS_NAMESPACE],[1],[Whether UTS namespaces are available]) + fi +]) # AX_CHECK_UTS_NAMESPACE diff --git a/m4/ax_code_coverage.m4 b/m4/ax_code_coverage.m4 new file mode 100644 index 0000000..5120c3b --- /dev/null +++ b/m4/ax_code_coverage.m4 @@ -0,0 +1,219 @@ +# =========================================================================== +# http://www.gnu.org/software/autoconf-archive/ax_code_coverage.html +# =========================================================================== +# +# SYNOPSIS +# +# AX_CODE_COVERAGE() +# +# DESCRIPTION +# +# Defines CODE_COVERAGE_CFLAGS and CODE_COVERAGE_LDFLAGS which should be +# included in the CFLAGS and LIBS/LDFLAGS variables of every build target +# (program or library) which should be built with code coverage support. +# Also defines CODE_COVERAGE_RULES which should be substituted in your +# Makefile; and $enable_code_coverage which can be used in subsequent +# configure output. CODE_COVERAGE_ENABLED is defined and substituted, and +# corresponds to the value of the --enable-code-coverage option, which +# defaults to being disabled. +# +# Test also for gcov program and create GCOV variable that could be +# substituted. +# +# Note that all optimisation flags in CFLAGS must be disabled when code +# coverage is enabled. +# +# Usage example: +# +# configure.ac: +# +# AX_CODE_COVERAGE +# +# Makefile.am: +# +# @CODE_COVERAGE_RULES@ +# my_program_LIBS = ... $(CODE_COVERAGE_LDFLAGS) ... +# my_program_CFLAGS = ... $(CODE_COVERAGE_CFLAGS) ... +# +# This results in a "check-code-coverage" rule being added to any +# Makefile.am which includes "@CODE_COVERAGE_RULES@" (assuming the module +# has been configured with --enable-code-coverage). Running `make +# check-code-coverage` in that directory will run the module's test suite +# (`make check`) and build a code coverage report detailing the code which +# was touched, then print the URI for the report. +# +# This code was derived from Makefile.decl in GLib, originally licenced +# under LGPLv2.1+. +# +# LICENSE +# +# Copyright (c) 2012 Philip Withnall +# Copyright (c) 2012 Xan Lopez +# Copyright (c) 2012 Christian Persch +# Copyright (c) 2012 Paolo Borelli +# Copyright (c) 2012 Dan Winship +# Copyright (c) 2015 Bastien ROUCARIES +# +# This library is free software; you can redistribute it and/or modify it +# under the terms of the GNU Lesser General Public License as published by +# the Free Software Foundation; either version 2.1 of the License, or (at +# your option) any later version. +# +# This library is distributed in the hope that it will be useful, but +# WITHOUT ANY WARRANTY; without even the implied warranty of +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser +# General Public License for more details. +# +# You should have received a copy of the GNU Lesser General Public License +# along with this program. If not, see <http://www.gnu.org/licenses/>. + +#serial 5 + +AC_DEFUN([AX_CODE_COVERAGE],[ + dnl Check for --enable-code-coverage + AC_REQUIRE([AC_PROG_SED]) + + # allow to override gcov location + AC_ARG_WITH([gcov], + [AS_HELP_STRING([--with-gcov[=GCOV]], [use given GCOV for coverage (GCOV=gcov).])], + [_AX_CODE_COVERAGE_GCOV_PROG_WITH=$with_gcov], + [_AX_CODE_COVERAGE_GCOV_PROG_WITH=gcov]) + + AC_MSG_CHECKING([whether to build with code coverage support]) + AC_ARG_ENABLE([code-coverage], + AS_HELP_STRING([--enable-code-coverage], + [Whether to enable code coverage support]),, + enable_code_coverage=no) + + AM_CONDITIONAL([CODE_COVERAGE_ENABLED], [test x$enable_code_coverage = xyes]) + AC_SUBST([CODE_COVERAGE_ENABLED], [$enable_code_coverage]) + AC_MSG_RESULT($enable_code_coverage) + + AS_IF([ test "$enable_code_coverage" = "yes" ], [ + # check for gcov + AC_CHECK_TOOL([GCOV], + [$_AX_CODE_COVERAGE_GCOV_PROG_WITH], + [:]) + AS_IF([test "X$GCOV" = "X:"], + [AC_MSG_ERROR([gcov is needed to do coverage])]) + AC_SUBST([GCOV]) + + dnl Check if gcc is being used + AS_IF([ test "$GCC" = "no" ], [ + AC_MSG_ERROR([not compiling with gcc, which is required for gcov code coverage]) + ]) + + # List of supported lcov versions. + lcov_version_list="1.6 1.7 1.8 1.9 1.10 1.11" + + AC_CHECK_PROG([LCOV], [lcov], [lcov]) + AC_CHECK_PROG([GENHTML], [genhtml], [genhtml]) + + AS_IF([ test "$LCOV" ], [ + AC_CACHE_CHECK([for lcov version], ax_cv_lcov_version, [ + ax_cv_lcov_version=invalid + lcov_version=`$LCOV -v 2>/dev/null | $SED -e 's/^.* //'` + for lcov_check_version in $lcov_version_list; do + if test "$lcov_version" = "$lcov_check_version"; then + ax_cv_lcov_version="$lcov_check_version (ok)" + fi + done + ]) + ], [ + lcov_msg="To enable code coverage reporting you must have one of the following lcov versions installed: $lcov_version_list" + AC_MSG_ERROR([$lcov_msg]) + ]) + + case $ax_cv_lcov_version in + ""|invalid[)] + lcov_msg="You must have one of the following versions of lcov: $lcov_version_list (found: $lcov_version)." + AC_MSG_ERROR([$lcov_msg]) + LCOV="exit 0;" + ;; + esac + + AS_IF([ test -z "$GENHTML" ], [ + AC_MSG_ERROR([Could not find genhtml from the lcov package]) + ]) + + dnl Build the code coverage flags + CODE_COVERAGE_CFLAGS="-O0 -g -fprofile-arcs -ftest-coverage" + CODE_COVERAGE_LDFLAGS="-lgcov" + + AC_SUBST([CODE_COVERAGE_CFLAGS]) + AC_SUBST([CODE_COVERAGE_LDFLAGS]) + +CODE_COVERAGE_RULES=' +# Code coverage +# +# Optional: +# - CODE_COVERAGE_DIRECTORY: Top-level directory for code coverage reporting. +# (Default: $(top_builddir)) +# - CODE_COVERAGE_OUTPUT_FILE: Filename and path for the .info file generated +# by lcov for code coverage. (Default: +# $(PACKAGE_NAME)-$(PACKAGE_VERSION)-coverage.info) +# - CODE_COVERAGE_OUTPUT_DIRECTORY: Directory for generated code coverage +# reports to be created. (Default: +# $(PACKAGE_NAME)-$(PACKAGE_VERSION)-coverage) +# - CODE_COVERAGE_LCOV_OPTIONS_GCOVPATH: --gcov-tool pathtogcov +# - CODE_COVERAGE_LCOV_OPTIONS_DEFAULT: Extra options to pass to the lcov instance. +# (Default: $CODE_COVERAGE_LCOV_OPTIONS_GCOVPATH) +# - CODE_COVERAGE_LCOV_OPTIONS: Extra options to pass to the lcov instance. +# (Default: $CODE_COVERAGE_LCOV_OPTIONS_DEFAULT) +# - CODE_COVERAGE_GENHTML_OPTIONS: Extra options to pass to the genhtml +# instance. (Default: empty) +# - CODE_COVERAGE_IGNORE_PATTERN: Extra glob pattern of files to ignore +# +# The generated report will be titled using the $(PACKAGE_NAME) and +# $(PACKAGE_VERSION). In order to add the current git hash to the title, +# use the git-version-gen script, available online. + +# Optional variables +CODE_COVERAGE_DIRECTORY ?= $(top_builddir) +CODE_COVERAGE_OUTPUT_FILE ?= $(PACKAGE_NAME)-$(PACKAGE_VERSION)-coverage.info +CODE_COVERAGE_OUTPUT_DIRECTORY ?= $(PACKAGE_NAME)-$(PACKAGE_VERSION)-coverage +CODE_COVERAGE_LCOV_OPTIONS_GCOVPATH ?= --gcov-tool "$(GCOV)" +CODE_COVERAGE_LCOV_OPTIONS_DEFAULT ?= $(CODE_COVERAGE_LCOV_OPTIONS_GCOVPATH) +CODE_COVERAGE_LCOV_OPTIONS ?= $(CODE_COVERAGE_LCOV_OPTIONS_DEFAULT) +CODE_COVERAGE_GENHTML_OPTIONS ?= +CODE_COVERAGE_IGNORE_PATTERN ?= + +code_coverage_quiet = $(code_coverage_quiet_$(V)) +code_coverage_quiet_ = +code_coverage_quiet_0 = --quiet + +# Use recursive makes in order to ignore errors during check +check-code-coverage: + -$(MAKE) $(AM_MAKEFLAGS) -k check + $(MAKE) $(AM_MAKEFLAGS) code-coverage-capture + +# Capture code coverage data +code-coverage-capture: code-coverage-capture-hook + $(LCOV) $(code_coverage_quiet) --directory $(CODE_COVERAGE_DIRECTORY) --capture --output-file "$(CODE_COVERAGE_OUTPUT_FILE).tmp" --test-name "$(PACKAGE_NAME)-$(PACKAGE_VERSION)" --no-checksum --compat-libtool $(CODE_COVERAGE_LCOV_OPTIONS) + $(LCOV) $(code_coverage_quiet) --directory $(CODE_COVERAGE_DIRECTORY) --remove "$(CODE_COVERAGE_OUTPUT_FILE).tmp" "/tmp/*" $(CODE_COVERAGE_IGNORE_PATTERN) --output-file "$(CODE_COVERAGE_OUTPUT_FILE)" + -@rm -f $(CODE_COVERAGE_OUTPUT_FILE).tmp + LANG=C $(GENHTML) $(code_coverage_quiet) --prefix $(CODE_COVERAGE_DIRECTORY) --output-directory "$(CODE_COVERAGE_OUTPUT_DIRECTORY)" --title "$(PACKAGE_NAME)-$(PACKAGE_VERSION) Code Coverage" --legend --show-details "$(CODE_COVERAGE_OUTPUT_FILE)" $(CODE_COVERAGE_GENHTML_OPTIONS) + @echo "file://$(abs_builddir)/$(CODE_COVERAGE_OUTPUT_DIRECTORY)/index.html" + +# Hook rule executed before code-coverage-capture, overridable by the user +code-coverage-capture-hook: + +clean: code-coverage-clean +code-coverage-clean: + -$(LCOV) --directory $(top_builddir) -z + -rm -rf $(CODE_COVERAGE_OUTPUT_FILE) $(CODE_COVERAGE_OUTPUT_FILE).tmp $(CODE_COVERAGE_OUTPUT_DIRECTORY) + -find . -name "*.gcda" -o -name "*.gcov" -delete + +GITIGNOREFILES ?= +GITIGNOREFILES += $(CODE_COVERAGE_OUTPUT_FILE) $(CODE_COVERAGE_OUTPUT_DIRECTORY) + +DISTCHECK_CONFIGURE_FLAGS ?= +DISTCHECK_CONFIGURE_FLAGS += --disable-code-coverage + +.PHONY: check-code-coverage code-coverage-capture code-coverage-capture-hook code-coverage-clean +' + AC_SUBST([CODE_COVERAGE_RULES]) + ]) + + m4_ifdef([_AM_SUBST_NOTMAKE], [_AM_SUBST_NOTMAKE([CODE_COVERAGE_RULES])]) +]) diff --git a/m4/ax_cxx_compile_stdcxx_11.m4 b/m4/ax_cxx_compile_stdcxx_11.m4 new file mode 100644 index 0000000..229de30 --- /dev/null +++ b/m4/ax_cxx_compile_stdcxx_11.m4 @@ -0,0 +1,163 @@ +# ============================================================================ +# http://www.gnu.org/software/autoconf-archive/ax_cxx_compile_stdcxx_11.html +# ============================================================================ +# +# SYNOPSIS +# +# AX_CXX_COMPILE_STDCXX_11([ext|noext],[mandatory|optional]) +# +# DESCRIPTION +# +# Check for baseline language coverage in the compiler for the C++11 +# standard; if necessary, add switches to CXXFLAGS to enable support. +# +# The first argument, if specified, indicates whether you insist on an +# extended mode (e.g. -std=gnu++11) or a strict conformance mode (e.g. +# -std=c++11). If neither is specified, you get whatever works, with +# preference for an extended mode. +# +# The second argument, if specified 'mandatory' or if left unspecified, +# indicates that baseline C++11 support is required and that the macro +# should error out if no mode with that support is found. If specified +# 'optional', then configuration proceeds regardless, after defining +# HAVE_CXX11 if and only if a supporting mode is found. +# +# LICENSE +# +# Copyright (c) 2008 Benjamin Kosnik <bkoz@redhat.com> +# Copyright (c) 2012 Zack Weinberg <zackw@panix.com> +# Copyright (c) 2013 Roy Stogner <roystgnr@ices.utexas.edu> +# Copyright (c) 2014, 2015 Google Inc.; contributed by Alexey Sokolov <sokolov@google.com> +# +# Copying and distribution of this file, with or without modification, are +# permitted in any medium without royalty provided the copyright notice +# and this notice are preserved. This file is offered as-is, without any +# warranty. + +#serial 9 + +m4_define([_AX_CXX_COMPILE_STDCXX_11_testbody], [[ + template <typename T> + struct check + { + static_assert(sizeof(int) <= sizeof(T), "not big enough"); + }; + + struct Base { + virtual void f() {} + }; + struct Child : public Base { + virtual void f() override {} + }; + + typedef check<check<bool>> right_angle_brackets; + + int a; + decltype(a) b; + + typedef check<int> check_type; + check_type c; + check_type&& cr = static_cast<check_type&&>(c); + + auto d = a; + auto l = [](){}; + + // http://stackoverflow.com/questions/13728184/template-aliases-and-sfinae + // Clang 3.1 fails with headers of libstd++ 4.8.3 when using std::function because of this + namespace test_template_alias_sfinae { + struct foo {}; + + template<typename T> + using member = typename T::member_type; + + template<typename T> + void func(...) {} + + template<typename T> + void func(member<T>*) {} + + void test(); + + void test() { + func<foo>(0); + } + } +]]) + +AC_DEFUN([AX_CXX_COMPILE_STDCXX_11], [dnl + m4_if([$1], [], [], + [$1], [ext], [], + [$1], [noext], [], + [m4_fatal([invalid argument `$1' to AX_CXX_COMPILE_STDCXX_11])])dnl + m4_if([$2], [], [ax_cxx_compile_cxx11_required=true], + [$2], [mandatory], [ax_cxx_compile_cxx11_required=true], + [$2], [optional], [ax_cxx_compile_cxx11_required=false], + [m4_fatal([invalid second argument `$2' to AX_CXX_COMPILE_STDCXX_11])]) + AC_LANG_PUSH([C++])dnl + ac_success=no + AC_CACHE_CHECK(whether $CXX supports C++11 features by default, + ax_cv_cxx_compile_cxx11, + [AC_COMPILE_IFELSE([AC_LANG_SOURCE([_AX_CXX_COMPILE_STDCXX_11_testbody])], + [ax_cv_cxx_compile_cxx11=yes], + [ax_cv_cxx_compile_cxx11=no])]) + if test x$ax_cv_cxx_compile_cxx11 = xyes; then + ac_success=yes + fi + + m4_if([$1], [noext], [], [dnl + if test x$ac_success = xno; then + for switch in -std=gnu++11 -std=gnu++0x; do + cachevar=AS_TR_SH([ax_cv_cxx_compile_cxx11_$switch]) + AC_CACHE_CHECK(whether $CXX supports C++11 features with $switch, + $cachevar, + [ac_save_CXXFLAGS="$CXXFLAGS" + CXXFLAGS="$CXXFLAGS $switch" + AC_COMPILE_IFELSE([AC_LANG_SOURCE([_AX_CXX_COMPILE_STDCXX_11_testbody])], + [eval $cachevar=yes], + [eval $cachevar=no]) + CXXFLAGS="$ac_save_CXXFLAGS"]) + if eval test x\$$cachevar = xyes; then + CXXFLAGS="$CXXFLAGS $switch" + ac_success=yes + break + fi + done + fi]) + + m4_if([$1], [ext], [], [dnl + if test x$ac_success = xno; then + for switch in -std=c++11 -std=c++0x; do + cachevar=AS_TR_SH([ax_cv_cxx_compile_cxx11_$switch]) + AC_CACHE_CHECK(whether $CXX supports C++11 features with $switch, + $cachevar, + [ac_save_CXXFLAGS="$CXXFLAGS" + CXXFLAGS="$CXXFLAGS $switch" + AC_COMPILE_IFELSE([AC_LANG_SOURCE([_AX_CXX_COMPILE_STDCXX_11_testbody])], + [eval $cachevar=yes], + [eval $cachevar=no]) + CXXFLAGS="$ac_save_CXXFLAGS"]) + if eval test x\$$cachevar = xyes; then + CXXFLAGS="$CXXFLAGS $switch" + ac_success=yes + break + fi + done + fi]) + AC_LANG_POP([C++]) + if test x$ax_cxx_compile_cxx11_required = xtrue; then + if test x$ac_success = xno; then + AC_MSG_ERROR([*** A compiler with support for C++11 language features is required.]) + fi + else + if test x$ac_success = xno; then + HAVE_CXX11=0 + AC_MSG_NOTICE([No compiler with C++11 support was found]) + else + HAVE_CXX11=1 + AC_DEFINE(HAVE_CXX11,1, + [define if the compiler supports basic C++11 syntax]) + fi + + AC_SUBST(HAVE_CXX11) + fi +]) diff --git a/m4/ax_pthread.m4 b/m4/ax_pthread.m4 new file mode 100644 index 0000000..d383ad5 --- /dev/null +++ b/m4/ax_pthread.m4 @@ -0,0 +1,332 @@ +# =========================================================================== +# http://www.gnu.org/software/autoconf-archive/ax_pthread.html +# =========================================================================== +# +# SYNOPSIS +# +# AX_PTHREAD([ACTION-IF-FOUND[, ACTION-IF-NOT-FOUND]]) +# +# DESCRIPTION +# +# This macro figures out how to build C programs using POSIX threads. It +# sets the PTHREAD_LIBS output variable to the threads library and linker +# flags, and the PTHREAD_CFLAGS output variable to any special C compiler +# flags that are needed. (The user can also force certain compiler +# flags/libs to be tested by setting these environment variables.) +# +# Also sets PTHREAD_CC to any special C compiler that is needed for +# multi-threaded programs (defaults to the value of CC otherwise). (This +# is necessary on AIX to use the special cc_r compiler alias.) +# +# NOTE: You are assumed to not only compile your program with these flags, +# but also link it with them as well. e.g. you should link with +# $PTHREAD_CC $CFLAGS $PTHREAD_CFLAGS $LDFLAGS ... $PTHREAD_LIBS $LIBS +# +# If you are only building threads programs, you may wish to use these +# variables in your default LIBS, CFLAGS, and CC: +# +# LIBS="$PTHREAD_LIBS $LIBS" +# CFLAGS="$CFLAGS $PTHREAD_CFLAGS" +# CC="$PTHREAD_CC" +# +# In addition, if the PTHREAD_CREATE_JOINABLE thread-attribute constant +# has a nonstandard name, defines PTHREAD_CREATE_JOINABLE to that name +# (e.g. PTHREAD_CREATE_UNDETACHED on AIX). +# +# Also HAVE_PTHREAD_PRIO_INHERIT is defined if pthread is found and the +# PTHREAD_PRIO_INHERIT symbol is defined when compiling with +# PTHREAD_CFLAGS. +# +# ACTION-IF-FOUND is a list of shell commands to run if a threads library +# is found, and ACTION-IF-NOT-FOUND is a list of commands to run it if it +# is not found. If ACTION-IF-FOUND is not specified, the default action +# will define HAVE_PTHREAD. +# +# Please let the authors know if this macro fails on any platform, or if +# you have any other suggestions or comments. This macro was based on work +# by SGJ on autoconf scripts for FFTW (http://www.fftw.org/) (with help +# from M. Frigo), as well as ac_pthread and hb_pthread macros posted by +# Alejandro Forero Cuervo to the autoconf macro repository. We are also +# grateful for the helpful feedback of numerous users. +# +# Updated for Autoconf 2.68 by Daniel Richard G. +# +# LICENSE +# +# Copyright (c) 2008 Steven G. Johnson <stevenj@alum.mit.edu> +# Copyright (c) 2011 Daniel Richard G. <skunk@iSKUNK.ORG> +# +# 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 3 of the License, 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, see <http://www.gnu.org/licenses/>. +# +# As a special exception, the respective Autoconf Macro's copyright owner +# gives unlimited permission to copy, distribute and modify the configure +# scripts that are the output of Autoconf when processing the Macro. 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 the +# Macro appear in them. The GNU General Public License (GPL) does govern +# all other use of the material that constitutes the Autoconf Macro. +# +# This special exception to the GPL applies to versions of the Autoconf +# Macro released by the Autoconf Archive. When you make and distribute a +# modified version of the Autoconf Macro, you may extend this special +# exception to the GPL to apply to your modified version as well. + +#serial 21 + +AU_ALIAS([ACX_PTHREAD], [AX_PTHREAD]) +AC_DEFUN([AX_PTHREAD], [ +AC_REQUIRE([AC_CANONICAL_HOST]) +AC_LANG_PUSH([C]) +ax_pthread_ok=no + +# We used to check for pthread.h first, but this fails if pthread.h +# requires special compiler flags (e.g. on True64 or Sequent). +# It gets checked for in the link test anyway. + +# First of all, check if the user has set any of the PTHREAD_LIBS, +# etcetera environment variables, and if threads linking works using +# them: +if test x"$PTHREAD_LIBS$PTHREAD_CFLAGS" != x; then + save_CFLAGS="$CFLAGS" + CFLAGS="$CFLAGS $PTHREAD_CFLAGS" + save_LIBS="$LIBS" + LIBS="$PTHREAD_LIBS $LIBS" + AC_MSG_CHECKING([for pthread_join in LIBS=$PTHREAD_LIBS with CFLAGS=$PTHREAD_CFLAGS]) + AC_TRY_LINK_FUNC([pthread_join], [ax_pthread_ok=yes]) + AC_MSG_RESULT([$ax_pthread_ok]) + if test x"$ax_pthread_ok" = xno; then + PTHREAD_LIBS="" + PTHREAD_CFLAGS="" + fi + LIBS="$save_LIBS" + CFLAGS="$save_CFLAGS" +fi + +# We must check for the threads library under a number of different +# names; the ordering is very important because some systems +# (e.g. DEC) have both -lpthread and -lpthreads, where one of the +# libraries is broken (non-POSIX). + +# Create a list of thread flags to try. Items starting with a "-" are +# C compiler flags, and other items are library names, except for "none" +# which indicates that we try without any flags at all, and "pthread-config" +# which is a program returning the flags for the Pth emulation library. + +ax_pthread_flags="pthreads none -Kthread -kthread lthread -pthread -pthreads -mthreads pthread --thread-safe -mt pthread-config" + +# The ordering *is* (sometimes) important. Some notes on the +# individual items follow: + +# pthreads: AIX (must check this before -lpthread) +# none: in case threads are in libc; should be tried before -Kthread and +# other compiler flags to prevent continual compiler warnings +# -Kthread: Sequent (threads in libc, but -Kthread needed for pthread.h) +# -kthread: FreeBSD kernel threads (preferred to -pthread since SMP-able) +# lthread: LinuxThreads port on FreeBSD (also preferred to -pthread) +# -pthread: Linux/gcc (kernel threads), BSD/gcc (userland threads) +# -pthreads: Solaris/gcc +# -mthreads: Mingw32/gcc, Lynx/gcc +# -mt: Sun Workshop C (may only link SunOS threads [-lthread], but it +# doesn't hurt to check since this sometimes defines pthreads too; +# also defines -D_REENTRANT) +# ... -mt is also the pthreads flag for HP/aCC +# pthread: Linux, etcetera +# --thread-safe: KAI C++ +# pthread-config: use pthread-config program (for GNU Pth library) + +case ${host_os} in + solaris*) + + # On Solaris (at least, for some versions), libc contains stubbed + # (non-functional) versions of the pthreads routines, so link-based + # tests will erroneously succeed. (We need to link with -pthreads/-mt/ + # -lpthread.) (The stubs are missing pthread_cleanup_push, or rather + # a function called by this macro, so we could check for that, but + # who knows whether they'll stub that too in a future libc.) So, + # we'll just look for -pthreads and -lpthread first: + + ax_pthread_flags="-pthreads pthread -mt -pthread $ax_pthread_flags" + ;; + + darwin*) + ax_pthread_flags="-pthread $ax_pthread_flags" + ;; +esac + +# Clang doesn't consider unrecognized options an error unless we specify +# -Werror. We throw in some extra Clang-specific options to ensure that +# this doesn't happen for GCC, which also accepts -Werror. + +AC_MSG_CHECKING([if compiler needs -Werror to reject unknown flags]) +save_CFLAGS="$CFLAGS" +ax_pthread_extra_flags="-Werror" +CFLAGS="$CFLAGS $ax_pthread_extra_flags -Wunknown-warning-option -Wsizeof-array-argument" +AC_COMPILE_IFELSE([AC_LANG_PROGRAM([int foo(void);],[foo()])], + [AC_MSG_RESULT([yes])], + [ax_pthread_extra_flags= + AC_MSG_RESULT([no])]) +CFLAGS="$save_CFLAGS" + +if test x"$ax_pthread_ok" = xno; then +for flag in $ax_pthread_flags; do + + case $flag in + none) + AC_MSG_CHECKING([whether pthreads work without any flags]) + ;; + + -*) + AC_MSG_CHECKING([whether pthreads work with $flag]) + PTHREAD_CFLAGS="$flag" + ;; + + pthread-config) + AC_CHECK_PROG([ax_pthread_config], [pthread-config], [yes], [no]) + if test x"$ax_pthread_config" = xno; then continue; fi + PTHREAD_CFLAGS="`pthread-config --cflags`" + PTHREAD_LIBS="`pthread-config --ldflags` `pthread-config --libs`" + ;; + + *) + AC_MSG_CHECKING([for the pthreads library -l$flag]) + PTHREAD_LIBS="-l$flag" + ;; + esac + + save_LIBS="$LIBS" + save_CFLAGS="$CFLAGS" + LIBS="$PTHREAD_LIBS $LIBS" + CFLAGS="$CFLAGS $PTHREAD_CFLAGS $ax_pthread_extra_flags" + + # Check for various functions. We must include pthread.h, + # since some functions may be macros. (On the Sequent, we + # need a special flag -Kthread to make this header compile.) + # We check for pthread_join because it is in -lpthread on IRIX + # while pthread_create is in libc. We check for pthread_attr_init + # due to DEC craziness with -lpthreads. We check for + # pthread_cleanup_push because it is one of the few pthread + # functions on Solaris that doesn't have a non-functional libc stub. + # We try pthread_create on general principles. + AC_LINK_IFELSE([AC_LANG_PROGRAM([#include <pthread.h> + static void routine(void *a) { a = 0; } + static void *start_routine(void *a) { return a; }], + [pthread_t th; pthread_attr_t attr; + pthread_create(&th, 0, start_routine, 0); + pthread_join(th, 0); + pthread_attr_init(&attr); + pthread_cleanup_push(routine, 0); + pthread_cleanup_pop(0) /* ; */])], + [ax_pthread_ok=yes], + []) + + LIBS="$save_LIBS" + CFLAGS="$save_CFLAGS" + + AC_MSG_RESULT([$ax_pthread_ok]) + if test "x$ax_pthread_ok" = xyes; then + break; + fi + + PTHREAD_LIBS="" + PTHREAD_CFLAGS="" +done +fi + +# Various other checks: +if test "x$ax_pthread_ok" = xyes; then + save_LIBS="$LIBS" + LIBS="$PTHREAD_LIBS $LIBS" + save_CFLAGS="$CFLAGS" + CFLAGS="$CFLAGS $PTHREAD_CFLAGS" + + # Detect AIX lossage: JOINABLE attribute is called UNDETACHED. + AC_MSG_CHECKING([for joinable pthread attribute]) + attr_name=unknown + for attr in PTHREAD_CREATE_JOINABLE PTHREAD_CREATE_UNDETACHED; do + AC_LINK_IFELSE([AC_LANG_PROGRAM([#include <pthread.h>], + [int attr = $attr; return attr /* ; */])], + [attr_name=$attr; break], + []) + done + AC_MSG_RESULT([$attr_name]) + if test "$attr_name" != PTHREAD_CREATE_JOINABLE; then + AC_DEFINE_UNQUOTED([PTHREAD_CREATE_JOINABLE], [$attr_name], + [Define to necessary symbol if this constant + uses a non-standard name on your system.]) + fi + + AC_MSG_CHECKING([if more special flags are required for pthreads]) + flag=no + case ${host_os} in + aix* | freebsd* | darwin*) flag="-D_THREAD_SAFE";; + osf* | hpux*) flag="-D_REENTRANT";; + solaris*) + if test "$GCC" = "yes"; then + flag="-D_REENTRANT" + else + # TODO: What about Clang on Solaris? + flag="-mt -D_REENTRANT" + fi + ;; + esac + AC_MSG_RESULT([$flag]) + if test "x$flag" != xno; then + PTHREAD_CFLAGS="$flag $PTHREAD_CFLAGS" + fi + + AC_CACHE_CHECK([for PTHREAD_PRIO_INHERIT], + [ax_cv_PTHREAD_PRIO_INHERIT], [ + AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include <pthread.h>]], + [[int i = PTHREAD_PRIO_INHERIT;]])], + [ax_cv_PTHREAD_PRIO_INHERIT=yes], + [ax_cv_PTHREAD_PRIO_INHERIT=no]) + ]) + AS_IF([test "x$ax_cv_PTHREAD_PRIO_INHERIT" = "xyes"], + [AC_DEFINE([HAVE_PTHREAD_PRIO_INHERIT], [1], [Have PTHREAD_PRIO_INHERIT.])]) + + LIBS="$save_LIBS" + CFLAGS="$save_CFLAGS" + + # More AIX lossage: compile with *_r variant + if test "x$GCC" != xyes; then + case $host_os in + aix*) + AS_CASE(["x/$CC"], + [x*/c89|x*/c89_128|x*/c99|x*/c99_128|x*/cc|x*/cc128|x*/xlc|x*/xlc_v6|x*/xlc128|x*/xlc128_v6], + [#handle absolute path differently from PATH based program lookup + AS_CASE(["x$CC"], + [x/*], + [AS_IF([AS_EXECUTABLE_P([${CC}_r])],[PTHREAD_CC="${CC}_r"])], + [AC_CHECK_PROGS([PTHREAD_CC],[${CC}_r],[$CC])])]) + ;; + esac + fi +fi + +test -n "$PTHREAD_CC" || PTHREAD_CC="$CC" + +AC_SUBST([PTHREAD_LIBS]) +AC_SUBST([PTHREAD_CFLAGS]) +AC_SUBST([PTHREAD_CC]) + +# Finally, execute ACTION-IF-FOUND/ACTION-IF-NOT-FOUND: +if test x"$ax_pthread_ok" = xyes; then + ifelse([$1],,[AC_DEFINE([HAVE_PTHREAD],[1],[Define if you have POSIX threads libraries and header files.])],[$1]) + : +else + ax_pthread_ok=no + $2 +fi +AC_LANG_POP +])dnl AX_PTHREAD diff --git a/m4/cares-confopts.m4 b/m4/cares-confopts.m4 index 9d12a9b..135036a 100644 --- a/m4/cares-confopts.m4 +++ b/m4/cares-confopts.m4 @@ -219,6 +219,44 @@ AC_HELP_STRING([--disable-symbol-hiding],[Disable hiding of library internal sym ]) +dnl CARES_CHECK_OPTION_EXPOSE_STATICS +dnl ------------------------------------------------- +dnl Verify if configure has been invoked with option +dnl --enable-expose-statics or --disable-expose-statics, +dnl setting shell variable want_expose_statics value. + +AC_DEFUN([CARES_CHECK_OPTION_EXPOSE_STATICS], [ + AC_MSG_CHECKING([whether to expose internal static functions for testing]) + OPT_EXPOSE_STATICS="default" + AC_ARG_ENABLE(expose-statics, +AC_HELP_STRING([--enable-expose-statics],[Enable exposure of internal static functions for testing]) +AC_HELP_STRING([--disable-expose-statics],[Disable exposure of internal static functions for testing]), + OPT_EXPOSE_STATICS=$enableval) + case "$OPT_EXPOSE_STATICS" in + no) + dnl --disable-expose-statics option used. + want_expose_statics="no" + AC_MSG_RESULT([no]) + ;; + default) + dnl configure's expose-statics option not specified. + dnl Handle this as if --disable-expose-statics option was given. + want_expose_statics="no" + AC_MSG_RESULT([no]) + ;; + *) + dnl --enable-expose-statics option used. + want_expose_statics="yes" + AC_MSG_RESULT([yes]) + ;; + esac + if test "$want_expose_statics" = "yes"; then + AC_DEFINE_UNQUOTED(CARES_EXPOSE_STATICS, 1, + [Defined for build that exposes internal static functions for testing.]) + fi +]) + + dnl CARES_CHECK_OPTION_WARNINGS dnl ------------------------------------------------- dnl Verify if configure has been invoked with option @@ -350,5 +388,9 @@ AC_DEFUN([CARES_CONFIGURE_SYMBOL_HIDING], [ fi AM_CONDITIONAL(DOING_CARES_SYMBOL_HIDING, test x$doing_symbol_hiding = xyes) AC_SUBST(CFLAG_CARES_SYMBOL_HIDING) + if test "$doing_symbol_hiding" = "yes"; then + AC_DEFINE_UNQUOTED(CARES_SYMBOL_HIDING, 1, + [Defined for build with symbol hiding.]) + fi ]) diff --git a/m4/xc-am-iface.m4 b/m4/xc-am-iface.m4 new file mode 100644 index 0000000..1571c21 --- /dev/null +++ b/m4/xc-am-iface.m4 @@ -0,0 +1,253 @@ +#--------------------------------------------------------------------------- +# +# xc-am-iface.m4 +# +# Copyright (c) 2013 Daniel Stenberg <daniel@haxx.se> +# +# Permission to use, copy, modify, and distribute this software for any +# purpose with or without fee is hereby granted, provided that the above +# copyright notice and this permission notice appear in all copies. +# +# THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES +# WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF +# MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR +# ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES +# WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN +# ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF +# OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. +# +#--------------------------------------------------------------------------- + +# serial 1 + + +dnl _XC_AUTOMAKE_BODY +dnl ------------------------------------------------- +dnl Private macro. +dnl +dnl This macro performs embedding of automake initialization +dnl code into configure script. When automake version 1.14 or +dnl newer is used at configure script generation time, this +dnl results in 'subdir-objects' automake option being used. +dnl When using automake versions older than 1.14 this option +dnl is not used when generating configure script. +dnl +dnl Existence of automake _AM_PROG_CC_C_O m4 private macro +dnl is used to differentiate automake version 1.14 from older +dnl ones which lack this macro. + +m4_define([_XC_AUTOMAKE_BODY], +[dnl +## --------------------------------------- ## +## Start of automake initialization code ## +## --------------------------------------- ## +m4_ifdef([_AM_PROG_CC_C_O], +[ +AM_INIT_AUTOMAKE([subdir-objects]) +],[ +AM_INIT_AUTOMAKE +])dnl +## ------------------------------------- ## +## End of automake initialization code ## +## ------------------------------------- ## +dnl +m4_define([$0], [])[]dnl +]) + + +dnl XC_AUTOMAKE +dnl ------------------------------------------------- +dnl Public macro. +dnl +dnl This macro embeds automake machinery into configure +dnl script regardless of automake version used in order +dnl to generate configure script. +dnl +dnl When using automake version 1.14 or newer, automake +dnl initialization option 'subdir-objects' is used to +dnl generate the configure script, otherwise this option +dnl is not used. + +AC_DEFUN([XC_AUTOMAKE], +[dnl +AC_PREREQ([2.50])dnl +dnl +AC_BEFORE([$0],[AM_INIT_AUTOMAKE])dnl +dnl +_XC_AUTOMAKE_BODY +dnl +m4_ifdef([AM_INIT_AUTOMAKE], + [m4_undefine([AM_INIT_AUTOMAKE])])dnl +dnl +m4_define([$0], [])[]dnl +]) + + +dnl _XC_AMEND_DISTCLEAN_BODY ([LIST-OF-SUBDIRS]) +dnl ------------------------------------------------- +dnl Private macro. +dnl +dnl This macro performs shell code embedding into +dnl configure script in order to modify distclean +dnl and maintainer-clean targets of makefiles which +dnl are located in given list of subdirs. +dnl +dnl See XC_AMEND_DISTCLEAN comments for details. + +m4_define([_XC_AMEND_DISTCLEAN_BODY], +[dnl +## ---------------------------------- ## +## Start of distclean amending code ## +## ---------------------------------- ## + +for xc_subdir in [$1] +do + +if test ! -f "$xc_subdir/Makefile"; then + echo "$xc_msg_err $xc_subdir/Makefile file not found. $xc_msg_abrt" >&2 + exit 1 +fi + +# Fetch dependency tracking file list from Makefile include lines. + +xc_inc_lines=`grep '^include .*(DEPDIR)' "$xc_subdir/Makefile" 2>/dev/null` +xc_cnt_words=`echo "$xc_inc_lines" | wc -w | tr -d "$xc_space$xc_tab"` + +# --disable-dependency-tracking might have been used, consequently +# there is nothing to amend without a dependency tracking file list. + +if test $xc_cnt_words -gt 0; then + +AC_MSG_NOTICE([amending $xc_subdir/Makefile]) + +# Build Makefile specific patch hunk. + +xc_p="$xc_subdir/xc_patch.tmp" + +xc_rm_depfiles=`echo "$xc_inc_lines" \ + | $SED 's%include% -rm -f%' 2>/dev/null` + +xc_dep_subdirs=`echo "$xc_inc_lines" \ + | $SED 's%include[[ ]][[ ]]*%%' 2>/dev/null \ + | $SED 's%(DEPDIR)/.*%(DEPDIR)%' 2>/dev/null \ + | sort | uniq` + +echo "$xc_rm_depfiles" >$xc_p + +for xc_dep_dir in $xc_dep_subdirs; do + echo "${xc_tab}@xm_dep_cnt=\`ls $xc_dep_dir | wc -l 2>/dev/null\`; \\" >>$xc_p + echo "${xc_tab}if test \$\$xm_dep_cnt -eq 0 && test -d $xc_dep_dir; then \\" >>$xc_p + echo "${xc_tab} rm -rf $xc_dep_dir; \\" >>$xc_p + echo "${xc_tab}fi" >>$xc_p +done + +# Build Makefile patching sed scripts. + +xc_s1="$xc_subdir/xc_script_1.tmp" +xc_s2="$xc_subdir/xc_script_2.tmp" +xc_s3="$xc_subdir/xc_script_3.tmp" + +cat >$xc_s1 <<\_EOT +/^distclean[[ ]]*:/,/^[[^ ]][[^ ]]*:/{ + s/^.*(DEPDIR)/___xc_depdir_line___/ +} +/^maintainer-clean[[ ]]*:/,/^[[^ ]][[^ ]]*:/{ + s/^.*(DEPDIR)/___xc_depdir_line___/ +} +_EOT + +cat >$xc_s2 <<\_EOT +/___xc_depdir_line___$/{ + N + /___xc_depdir_line___$/D +} +_EOT + +cat >$xc_s3 <<_EOT +/^___xc_depdir_line___/{ + r $xc_p + d +} +_EOT + +# Apply patch to Makefile and cleanup. + +$SED -f "$xc_s1" "$xc_subdir/Makefile" >"$xc_subdir/Makefile.tmp1" +$SED -f "$xc_s2" "$xc_subdir/Makefile.tmp1" >"$xc_subdir/Makefile.tmp2" +$SED -f "$xc_s3" "$xc_subdir/Makefile.tmp2" >"$xc_subdir/Makefile.tmp3" + +if test -f "$xc_subdir/Makefile.tmp3"; then + mv -f "$xc_subdir/Makefile.tmp3" "$xc_subdir/Makefile" +fi + +test -f "$xc_subdir/Makefile.tmp1" && rm -f "$xc_subdir/Makefile.tmp1" +test -f "$xc_subdir/Makefile.tmp2" && rm -f "$xc_subdir/Makefile.tmp2" +test -f "$xc_subdir/Makefile.tmp3" && rm -f "$xc_subdir/Makefile.tmp3" + +test -f "$xc_p" && rm -f "$xc_p" +test -f "$xc_s1" && rm -f "$xc_s1" +test -f "$xc_s2" && rm -f "$xc_s2" +test -f "$xc_s3" && rm -f "$xc_s3" + +fi + +done + +## -------------------------------- ## +## End of distclean amending code ## +## -------------------------------- ## +dnl +m4_define([$0], [])[]dnl +]) + + +dnl XC_AMEND_DISTCLEAN ([LIST-OF-SUBDIRS]) +dnl ------------------------------------------------- +dnl Public macro. +dnl +dnl This macro embeds shell code into configure script +dnl that amends, at configure runtime, the distclean +dnl and maintainer-clean targets of Makefiles located +dnl in all subdirs given in the mandatory white-space +dnl separated list argument. +dnl +dnl Embedding only takes place when using automake 1.14 +dnl or newer, otherwise amending code is not included +dnl in generated configure script. +dnl +dnl distclean and maintainer-clean targets are modified +dnl to avoid unconditional removal of dependency subdirs +dnl which triggers distclean and maintainer-clean errors +dnl when using automake 'subdir-objects' option along +dnl with per-target objects and source files existing in +dnl multiple subdirs used for different build targets. +dnl +dnl New behavior first removes each dependency tracking +dnl file independently, and only removes each dependency +dnl subdir when it finds out that it no longer holds any +dnl dependency tracking file. +dnl +dnl When configure option --disable-dependency-tracking +dnl is used no amending takes place given that there are +dnl no dependency tracking files. + +AC_DEFUN([XC_AMEND_DISTCLEAN], +[dnl +AC_PREREQ([2.50])dnl +dnl +m4_ifdef([_AC_OUTPUT_MAIN_LOOP], + [m4_provide_if([_AC_OUTPUT_MAIN_LOOP], [], + [m4_fatal([call to AC_OUTPUT needed before $0])])])dnl +dnl +m4_if([$#], [1], [], [m4_fatal([$0: wrong number of arguments])])dnl +m4_if([$1], [], [m4_fatal([$0: missing argument])])dnl +dnl +AC_REQUIRE([XC_CONFIGURE_PREAMBLE])dnl +dnl +m4_ifdef([_AM_PROG_CC_C_O], +[ +_XC_AMEND_DISTCLEAN_BODY([$1]) +])dnl +m4_define([$0], [])[]dnl +]) + |