From df19821ea34c4231ccb5879e1b512ce8325d68b7 Mon Sep 17 00:00:00 2001 From: David Seifert Date: Sun, 3 May 2020 12:36:28 +0200 Subject: [PATCH] Modernize Autotools build system * Remove all Autotools-generated cruft from the repo and add it to `.gitignore`. * Generate `.bz2` tarballs instead of `.gz` tarballs. * Make "Google Tests", "Google Flags" and "Google Test" have a corresponding `--disable` flag, which is less automagic than currently. * Do not override `$(docdir)` in `Makefile.am`, as this is a user flag in the GNU conventions. * Make tests only compile when invoked with `make check`. --- .gitignore | 56 ++++++ Makefile.am | 12 +- configure.ac | 184 ++++++++++-------- m4/ax_pthread.m4 | 485 ++++++++++++++++++++++++++++++++++++++++++++++ m4/ltsugar.m4 | 123 ------------ m4/lt~obsolete.m4 | 98 ---------- 6 files changed, 645 insertions(+), 313 deletions(-) create mode 100644 m4/ax_pthread.m4 delete mode 100644 m4/ltsugar.m4 delete mode 100644 m4/lt~obsolete.m4 diff --git a/.gitignore b/.gitignore index b3158cf31..1fdd917f3 100644 --- a/.gitignore +++ b/.gitignore @@ -10,3 +10,59 @@ config.h glog-*.tar.gz packages/debian-* packages/rpm-unknown +*.o + +# Autotools cruft +*.la +*.lo +*.log +*.pc +*.trs +.deps/ +.dirstamp +.libs/ + +INSTALL +Makefile +Makefile.in +aclocal.m4 +compile +config.guess +config.status +config.sub +configure +demangle.dm +demangle.nm +demangle_unittest +depcomp +install-sh +libtool +logging_striptest0 +logging_striptest10 +logging_striptest2 +logging_unittest +ltmain.sh +m4/libtool.m4 +m4/lt*.m4 +missing +mock_log_test +signalhandler.out1 +signalhandler.out2 +signalhandler.out3 +signalhandler.out4 +signalhandler_unittest +src/config.h +src/config.h.in +src/glog/logging.h +src/glog/raw_logging.h +src/glog/stl_logging.h +src/glog/vlog_is_on.h +src/stamp-h1 +stacktrace_unittest +stl_logging_unittest +symbolize_unittest +test-driver +utilities_unittest + +*.tar.gz +*.tar.bz2 diff --git a/Makefile.am b/Makefile.am index e792332a0..ba908f9a0 100644 --- a/Makefile.am +++ b/Makefile.am @@ -23,7 +23,7 @@ if ENABLE_FRAME_POINTERS else # TODO(csilvers): check if -fomit-frame-pointer might be in $(CXXFLAGS), # before setting this. - AM_CXXFLAGS += -DNO_FRAME_POINTER + AM_CPPFLAGS += -DNO_FRAME_POINTER endif endif @@ -43,8 +43,8 @@ noinst_HEADERS = src/glog/logging.h.in src/glog/raw_logging.h.in src/glog/vlog_i ## This is for HTML and other documentation you want to install. ## Add your documentation files (in doc/) in addition to these ## top-level boilerplate files. Also add a TODO file if you have one. -dist_doc_DATA = AUTHORS COPYING ChangeLog INSTALL README.md README.windows \ - doc/designstyle.css doc/glog.html +dist_doc_DATA = AUTHORS ChangeLog README.md +dist_html_DATA = doc/designstyle.css doc/glog.html ## The libraries (.so's) you want to install lib_LTLIBRARIES = @@ -225,7 +225,7 @@ WINDOWS_PROJECTS += vsprojects/logging_unittest_static/logging_unittest_static.v ## This should always include $(TESTS), but may also include other ## binaries that you compile but don't want automatically installed. -noinst_PROGRAMS = $(TESTS) $(TEST_BINARIES) +check_PROGRAMS = $(TESTS) $(TEST_BINARIES) rpm: dist-gzip packages/rpm.sh packages/rpm/rpm.spec @cd packages && ./rpm.sh ${PACKAGE} ${VERSION} @@ -242,14 +242,14 @@ libtool: $(LIBTOOL_DEPS) $(SHELL) ./config.status --recheck EXTRA_DIST = packages/rpm.sh packages/rpm/rpm.spec \ - packages/deb.sh packages/deb/* \ + packages/deb.sh packages/deb \ $(SCRIPTS) src/logging_unittest.err src/demangle_unittest.txt \ src/windows/config.h src/windows/port.h src/windows/port.cc \ src/windows/preprocess.sh \ src/windows/glog/log_severity.h src/windows/glog/logging.h \ src/windows/glog/raw_logging.h src/windows/glog/stl_logging.h \ src/windows/glog/vlog_is_on.h \ - $(WINDOWS_PROJECTS) + $(WINDOWS_PROJECTS) COPYING INSTALL README.windows CLEANFILES = core demangle.dm demangle.nm signalhandler.out* \ signalhandler_unittest.*.log.INFO.* diff --git a/configure.ac b/configure.ac index 80005c267..8bed6dc15 100644 --- a/configure.ac +++ b/configure.ac @@ -10,8 +10,8 @@ AC_INIT(glog, 0.4.0, opensource@google.com) # (for sanity checking) AC_CONFIG_SRCDIR(README.md) AC_CONFIG_MACRO_DIR([m4]) -AM_INIT_AUTOMAKE -AM_CONFIG_HEADER(src/config.h) +AM_INIT_AUTOMAKE([1.15 subdir-objects dist-bzip2 no-dist-gzip]) +AC_CONFIG_HEADERS([src/config.h]) AC_LANG(C++) @@ -21,7 +21,7 @@ AC_PROG_CPP AC_PROG_CXX AM_CONDITIONAL(GCC, test "$GCC" = yes) # let the Makefile know if we're gcc -AC_PROG_LIBTOOL +LT_INIT AC_SUBST(LIBTOOL_DEPS) # Check whether some low-level functions/files are available @@ -103,93 +103,105 @@ AX_C___SYNC_VAL_COMPARE_AND_SWAP # On x86_64, instead of libunwind, we can choose to compile with frame-pointers # (This isn't needed on i386, where -fno-omit-frame-pointer is the default). -AC_ARG_ENABLE(frame_pointers, - AS_HELP_STRING([--enable-frame-pointers], - [On x86_64 systems, compile with -fno-omit-frame-pointer (see INSTALL)]),, - enable_frame_pointers=no) +AC_ARG_ENABLE([frame-pointers], + AS_HELP_STRING([--enable-frame-pointers], + [On x86_64 systems, compile with -fno-omit-frame-pointer (see INSTALL)])) AC_COMPILE_IFELSE([AC_LANG_PROGRAM(, [return __x86_64__ == 1 ? 0 : 1])], [is_x86_64=yes], [is_x86_64=no]) -AM_CONDITIONAL(ENABLE_FRAME_POINTERS, test "$enable_frame_pointers" = yes) -AM_CONDITIONAL(X86_64, test "$is_x86_64" = yes) - -AC_ARG_ENABLE(rtti, - AS_HELP_STRING([--disable-rtti], - [Disable RTTI in glog])) -AM_CONDITIONAL(DISABLE_RTTI, test x"$enable_rtti" = x"no") -if test x"$enable_rtti" = x"no"; then - AC_DEFINE(DISABLE_RTTI, 1, [define if glog doesn't use RTTI]) -fi +AM_CONDITIONAL([ENABLE_FRAME_POINTERS], [test "x$enable_frame_pointers" = "xyes"]) +AM_CONDITIONAL([X86_64], [test "x$is_x86_64" = "xyes"]) -# Some of the code in this directory depends on pthreads -ACX_PTHREAD -if test x"$acx_pthread_ok" = x"yes"; then - # To make libglog depend on libpthread on Linux, we need to add - # -lpthread in addition to -pthread. - AC_CHECK_LIB(pthread, pthread_self) -fi +AC_ARG_ENABLE([rtti], + AS_HELP_STRING([--disable-rtti], [Disable RTTI in glog])) +AM_CONDITIONAL([DISABLE_RTTI], [test "x$enable_rtti" = "xno"]) +AS_IF([test "x$enable_rtti" = "xno"], [ + AC_DEFINE([DISABLE_RTTI], [1], [define if glog doesn't use RTTI]) +]) -# Check if there is google-gflags library installed. -SAVE_CFLAGS="$CFLAGS" -SAVE_LIBS="$LIBS" -AC_ARG_WITH(gflags, AS_HELP_STRING[--with-gflags=GFLAGS_DIR], - GFLAGS_CFLAGS="-I${with_gflags}/include" - GFLAGS_LIBS="-L${with_gflags}/lib -lgflags" - CFLAGS="$CFLAGS $GFLAGS_CFLAGS" - LIBS="$LIBS $GFLAGS_LIBS" -) -AC_CHECK_LIB(gflags, main, ac_cv_have_libgflags=1, ac_cv_have_libgflags=0) -if test x"$ac_cv_have_libgflags" = x"1"; then - AC_DEFINE(HAVE_LIB_GFLAGS, 1, [define if you have google gflags library]) - if test x"$GFLAGS_LIBS" = x""; then - GFLAGS_LIBS="-lgflags" - fi -else - GFLAGS_CFLAGS= - GFLAGS_LIBS= -fi -CFLAGS="$SAVE_CFLAGS" -LIBS="$SAVE_LIBS" - -# TODO(hamaji): Use official m4 macros provided by testing libraries -# once the m4 macro of Google Mocking becomes ready. -# Check if there is Google Test library installed. -AC_CHECK_PROG(GTEST_CONFIG, gtest-config, "yes") -AC_CHECK_LIB(gtest, main, have_gtest_lib="yes") -if test x"$GTEST_CONFIG" = "xyes" -a x"$have_gtest_lib" = "xyes"; then - GTEST_CFLAGS=`gtest-config --cppflags --cxxflags` - GTEST_LIBS=`gtest-config --ldflags --libs` - AC_DEFINE(HAVE_LIB_GTEST, 1, [define if you have google gtest library]) - - # Check if there is Google Mocking library installed. - AC_CHECK_PROG(GMOCK_CONFIG, gmock-config, "yes") - if test x"$GMOCK_CONFIG" = "xyes"; then - GMOCK_CFLAGS=`gmock-config --cppflags --cxxflags` - GMOCK_LIBS=`gmock-config --ldflags --libs` - AC_DEFINE(HAVE_LIB_GMOCK, 1, [define if you have google gmock library]) - else - # We don't run test cases which use Google Mocking framework. - GMOCK_CFLAGS= - GMOCK_LIBS= - fi -else - # We'll use src/googletest.h for our unittests. - GTEST_CFLAGS= - GTEST_LIBS= -fi -AM_CONDITIONAL(HAVE_GMOCK, test x"$GMOCK_CONFIG" = "xyes") - -# We want to link in libunwind if it exists -UNWIND_LIBS= -# Unfortunately, we need to check the header file in addition to the -# lib file to check if libunwind is available since libunwind-0.98 -# doesn't install all necessary header files. -if test x"$ac_cv_have_libunwind_h" = x"1"; then - AC_CHECK_LIB(unwind, backtrace, UNWIND_LIBS=-lunwind) -fi -AC_SUBST(UNWIND_LIBS) -if test x"$UNWIND_LIBS" != x""; then - AC_DEFINE(HAVE_LIB_UNWIND, 1, [define if you have libunwind]) -fi +dnl Some of the code in this directory depends on pthreads +AX_PTHREAD +AS_IF([test "x$ax_pthread_ok" = "xyes"], [ + dnl To make libglog depend on libpthread on Linux, we need to add + dnl -lpthread in addition to -pthread. + AC_CHECK_LIB([pthread], [pthread_self]) +]) + +dnl Check if there is google-gflags library installed. +dnl Building against google-gflags library is enabled by default +AC_ARG_ENABLE([gflags], + AS_HELP_STRING([--disable-gflags], [Disable building against google-gflags])) + +ac_cv_have_libgflags=0 +AS_IF([test "x$enable_gflags" != "xno"], [ + SAVE_CFLAGS="$CFLAGS" + SAVE_LIBS="$LIBS" + AC_ARG_WITH([gflags], AS_HELP_STRING([--with-gflags=GFLAGS_DIR]),[ + GFLAGS_CFLAGS="-I${with_gflags}/include" + GFLAGS_LIBS="-L${with_gflags}/lib -lgflags" + CFLAGS="$CFLAGS $GFLAGS_CFLAGS" + LIBS="$LIBS $GFLAGS_LIBS" + ]) + + AC_CHECK_LIB(gflags, main, ac_cv_have_libgflags=1, ac_cv_have_libgflags=0) + CFLAGS="$SAVE_CFLAGS" + LIBS="$SAVE_LIBS" +]) + +AS_IF([test "x$ac_cv_have_libgflags" = "x1"], [ + AC_DEFINE([HAVE_LIB_GFLAGS], [1], [define if you have google gflags library]) + AS_IF([test "x$GFLAGS_LIBS" = "x"], [ + GFLAGS_LIBS="-lgflags" + ]) +], [ + GFLAGS_CFLAGS= + GFLAGS_LIBS= +]) + +dnl TODO(hamaji): Use official m4 macros provided by testing libraries +dnl once the m4 macro of Google Mocking becomes ready. +dnl Check if there is Google Test library installed. +dnl Building against Google Test library is enabled by default +AC_ARG_ENABLE([gtest-config], + AS_HELP_STRING([--disable-gtest-config], [Disable building against Google Test library])) + +AS_IF([test "x$enable_gtest_config" != "xno"], [ + AC_CHECK_PROG([GTEST_CONFIG], [gtest-config], [yes]) + AC_CHECK_LIB([gtest], [main], [have_gtest_lib="yes"]) +], [ + have_gtest_lib="no" +]) + +AS_IF([test "x$GTEST_CONFIG" = "xyes" -a "x$have_gtest_lib" = "xyes"], [ + GTEST_CFLAGS=`gtest-config --cppflags --cxxflags` + GTEST_LIBS=`gtest-config --ldflags --libs` + AC_DEFINE([HAVE_LIB_GTEST], [1], [define if you have google gtest library]) + + dnl Check if there is Google Mocking library installed. + AC_CHECK_PROG([GMOCK_CONFIG], [gmock-config], [yes]) + AS_IF([test "x$GMOCK_CONFIG" = "xyes"], [ + GMOCK_CFLAGS=`gmock-config --cppflags --cxxflags` + GMOCK_LIBS=`gmock-config --ldflags --libs` + AC_DEFINE([HAVE_LIB_GMOCK], [1], [define if you have google gmock library]) + ], [ + dnl We don't run test cases which use Google Mocking framework. + GMOCK_CFLAGS= + GMOCK_LIBS= + ]) +], [ + dnl We'll use src/googletest.h for our unittests. + GTEST_CFLAGS= + GTEST_LIBS= +]) +AM_CONDITIONAL([HAVE_GMOCK], [test "x$GMOCK_CONFIG" = "xyes"]) + +dnl Building against libunwind is enabled by default +AC_ARG_ENABLE([unwind], + AS_HELP_STRING([--disable-unwind], [Disable building against libunwind])) + +AS_IF([test "x$enable_unwind" != "xno"], [ + PKG_CHECK_MODULES([UNWIND], [libunwind > 0.98]) + AC_DEFINE([HAVE_LIB_UNWIND], [1], [define if you have libunwind]) +]) # We'd like to use read/write locks in several places in the code. # See if our pthreads support extends to that. Note: for linux, it diff --git a/m4/ax_pthread.m4 b/m4/ax_pthread.m4 new file mode 100644 index 000000000..4c4051ea3 --- /dev/null +++ b/m4/ax_pthread.m4 @@ -0,0 +1,485 @@ +# =========================================================================== +# 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 to link with them as well. For example, you might link with +# $PTHREAD_CC $CFLAGS $PTHREAD_CFLAGS $LDFLAGS ... $PTHREAD_LIBS $LIBS +# +# If you are only building threaded programs, you may wish to use these +# variables in your default LIBS, CFLAGS, and CC: +# +# LIBS="$PTHREAD_LIBS $LIBS" +# CFLAGS="$CFLAGS $PTHREAD_CFLAGS" +# CC="$PTHREAD_CC" +# +# In addition, if the PTHREAD_CREATE_JOINABLE thread-attribute constant +# has a nonstandard name, this macro 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 +# Copyright (c) 2011 Daniel Richard G. +# +# 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 . +# +# 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 23 + +AU_ALIAS([ACX_PTHREAD], [AX_PTHREAD]) +AC_DEFUN([AX_PTHREAD], [ +AC_REQUIRE([AC_CANONICAL_HOST]) +AC_REQUIRE([AC_PROG_CC]) +AC_REQUIRE([AC_PROG_SED]) +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 Tru64 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$PTHREAD_CFLAGS$PTHREAD_LIBS" != "x"; then + ax_pthread_save_CC="$CC" + ax_pthread_save_CFLAGS="$CFLAGS" + ax_pthread_save_LIBS="$LIBS" + AS_IF([test "x$PTHREAD_CC" != "x"], [CC="$PTHREAD_CC"]) + CFLAGS="$CFLAGS $PTHREAD_CFLAGS" + LIBS="$PTHREAD_LIBS $LIBS" + AC_MSG_CHECKING([for pthread_join using $CC $PTHREAD_CFLAGS $PTHREAD_LIBS]) + AC_LINK_IFELSE([AC_LANG_CALL([], [pthread_join])], [ax_pthread_ok=yes]) + AC_MSG_RESULT([$ax_pthread_ok]) + if test "x$ax_pthread_ok" = "xno"; then + PTHREAD_LIBS="" + PTHREAD_CFLAGS="" + fi + CC="$ax_pthread_save_CC" + CFLAGS="$ax_pthread_save_CFLAGS" + LIBS="$ax_pthread_save_LIBS" +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 -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) +# -pthread: Linux/gcc (kernel threads), BSD/gcc (userland threads), Tru64 +# (Note: HP C rejects this with "bad form for `-t' option") +# -pthreads: Solaris/gcc (Note: HP C also rejects) +# -mt: Sun Workshop C (may only link SunOS threads [-lthread], but it +# doesn't hurt to check since this sometimes defines pthreads and +# -D_REENTRANT too), HP C (must be checked before -lpthread, which +# is present but should not be used directly; and before -mthreads, +# because the compiler interprets this as "-mt" + "-hreads") +# -mthreads: Mingw32/gcc, Lynx/gcc +# pthread: Linux, etcetera +# --thread-safe: KAI C++ +# pthread-config: use pthread-config program (for GNU Pth library) + +case $host_os in + + freebsd*) + + # -kthread: FreeBSD kernel threads (preferred to -pthread since SMP-able) + # lthread: LinuxThreads port on FreeBSD (also preferred to -pthread) + + ax_pthread_flags="-kthread lthread $ax_pthread_flags" + ;; + + hpux*) + + # From the cc(1) man page: "[-mt] Sets various -D flags to enable + # multi-threading and also sets -lpthread." + + ax_pthread_flags="-mt -pthread pthread $ax_pthread_flags" + ;; + + openedition*) + + # IBM z/OS requires a feature-test macro to be defined in order to + # enable POSIX threads at all, so give the user a hint if this is + # not set. (We don't define these ourselves, as they can affect + # other portions of the system API in unpredictable ways.) + + AC_EGREP_CPP([AX_PTHREAD_ZOS_MISSING], + [ +# if !defined(_OPEN_THREADS) && !defined(_UNIX03_THREADS) + AX_PTHREAD_ZOS_MISSING +# endif + ], + [AC_MSG_WARN([IBM z/OS requires -D_OPEN_THREADS or -D_UNIX03_THREADS to enable pthreads support.])]) + ;; + + 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. (N.B.: 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 check first for the + # standard Solaris way of linking pthreads (-mt -lpthread). + + ax_pthread_flags="-mt,pthread pthread $ax_pthread_flags" + ;; +esac + +# GCC generally uses -pthread, or -pthreads on some platforms (e.g. SPARC) + +AS_IF([test "x$GCC" = "xyes"], + [ax_pthread_flags="-pthread -pthreads $ax_pthread_flags"]) + +# The presence of a feature test macro requesting re-entrant function +# definitions is, on some systems, a strong hint that pthreads support is +# correctly enabled + +case $host_os in + darwin* | hpux* | linux* | osf* | solaris*) + ax_pthread_check_macro="_REENTRANT" + ;; + + aix*) + ax_pthread_check_macro="_THREAD_SAFE" + ;; + + *) + ax_pthread_check_macro="--" + ;; +esac +AS_IF([test "x$ax_pthread_check_macro" = "x--"], + [ax_pthread_check_cond=0], + [ax_pthread_check_cond="!defined($ax_pthread_check_macro)"]) + +# Are we compiling with Clang? + +AC_CACHE_CHECK([whether $CC is Clang], + [ax_cv_PTHREAD_CLANG], + [ax_cv_PTHREAD_CLANG=no + # Note that Autoconf sets GCC=yes for Clang as well as GCC + if test "x$GCC" = "xyes"; then + AC_EGREP_CPP([AX_PTHREAD_CC_IS_CLANG], + [/* Note: Clang 2.7 lacks __clang_[a-z]+__ */ +# if defined(__clang__) && defined(__llvm__) + AX_PTHREAD_CC_IS_CLANG +# endif + ], + [ax_cv_PTHREAD_CLANG=yes]) + fi + ]) +ax_pthread_clang="$ax_cv_PTHREAD_CLANG" + +ax_pthread_clang_warning=no + +# Clang needs special handling, because older versions handle the -pthread +# option in a rather... idiosyncratic way + +if test "x$ax_pthread_clang" = "xyes"; then + + # Clang takes -pthread; it has never supported any other flag + + # (Note 1: This will need to be revisited if a system that Clang + # supports has POSIX threads in a separate library. This tends not + # to be the way of modern systems, but it's conceivable.) + + # (Note 2: On some systems, notably Darwin, -pthread is not needed + # to get POSIX threads support; the API is always present and + # active. We could reasonably leave PTHREAD_CFLAGS empty. But + # -pthread does define _REENTRANT, and while the Darwin headers + # ignore this macro, third-party headers might not.) + + PTHREAD_CFLAGS="-pthread" + PTHREAD_LIBS= + + ax_pthread_ok=yes + + # However, older versions of Clang make a point of warning the user + # that, in an invocation where only linking and no compilation is + # taking place, the -pthread option has no effect ("argument unused + # during compilation"). They expect -pthread to be passed in only + # when source code is being compiled. + # + # Problem is, this is at odds with the way Automake and most other + # C build frameworks function, which is that the same flags used in + # compilation (CFLAGS) are also used in linking. Many systems + # supported by AX_PTHREAD require exactly this for POSIX threads + # support, and in fact it is often not straightforward to specify a + # flag that is used only in the compilation phase and not in + # linking. Such a scenario is extremely rare in practice. + # + # Even though use of the -pthread flag in linking would only print + # a warning, this can be a nuisance for well-run software projects + # that build with -Werror. So if the active version of Clang has + # this misfeature, we search for an option to squash it. + + AC_CACHE_CHECK([whether Clang needs flag to prevent "argument unused" warning when linking with -pthread], + [ax_cv_PTHREAD_CLANG_NO_WARN_FLAG], + [ax_cv_PTHREAD_CLANG_NO_WARN_FLAG=unknown + # Create an alternate version of $ac_link that compiles and + # links in two steps (.c -> .o, .o -> exe) instead of one + # (.c -> exe), because the warning occurs only in the second + # step + ax_pthread_save_ac_link="$ac_link" + ax_pthread_sed='s/conftest\.\$ac_ext/conftest.$ac_objext/g' + ax_pthread_link_step=`$as_echo "$ac_link" | sed "$ax_pthread_sed"` + ax_pthread_2step_ac_link="($ac_compile) && (echo ==== >&5) && ($ax_pthread_link_step)" + ax_pthread_save_CFLAGS="$CFLAGS" + for ax_pthread_try in '' -Qunused-arguments -Wno-unused-command-line-argument unknown; do + AS_IF([test "x$ax_pthread_try" = "xunknown"], [break]) + CFLAGS="-Werror -Wunknown-warning-option $ax_pthread_try -pthread $ax_pthread_save_CFLAGS" + ac_link="$ax_pthread_save_ac_link" + AC_LINK_IFELSE([AC_LANG_SOURCE([[int main(void){return 0;}]])], + [ac_link="$ax_pthread_2step_ac_link" + AC_LINK_IFELSE([AC_LANG_SOURCE([[int main(void){return 0;}]])], + [break]) + ]) + done + ac_link="$ax_pthread_save_ac_link" + CFLAGS="$ax_pthread_save_CFLAGS" + AS_IF([test "x$ax_pthread_try" = "x"], [ax_pthread_try=no]) + ax_cv_PTHREAD_CLANG_NO_WARN_FLAG="$ax_pthread_try" + ]) + + case "$ax_cv_PTHREAD_CLANG_NO_WARN_FLAG" in + no | unknown) ;; + *) PTHREAD_CFLAGS="$ax_cv_PTHREAD_CLANG_NO_WARN_FLAG $PTHREAD_CFLAGS" ;; + esac + +fi # $ax_pthread_clang = yes + +if test "x$ax_pthread_ok" = "xno"; then +for ax_pthread_try_flag in $ax_pthread_flags; do + + case $ax_pthread_try_flag in + none) + AC_MSG_CHECKING([whether pthreads work without any flags]) + ;; + + -mt,pthread) + AC_MSG_CHECKING([whether pthreads work with -mt -lpthread]) + PTHREAD_CFLAGS="-mt" + PTHREAD_LIBS="-lpthread" + ;; + + -*) + AC_MSG_CHECKING([whether pthreads work with $ax_pthread_try_flag]) + PTHREAD_CFLAGS="$ax_pthread_try_flag" + ;; + + pthread-config) + AC_CHECK_PROG([ax_pthread_config], [pthread-config], [yes], [no]) + AS_IF([test "x$ax_pthread_config" = "xno"], [continue]) + PTHREAD_CFLAGS="`pthread-config --cflags`" + PTHREAD_LIBS="`pthread-config --ldflags` `pthread-config --libs`" + ;; + + *) + AC_MSG_CHECKING([for the pthreads library -l$ax_pthread_try_flag]) + PTHREAD_LIBS="-l$ax_pthread_try_flag" + ;; + esac + + ax_pthread_save_CFLAGS="$CFLAGS" + ax_pthread_save_LIBS="$LIBS" + CFLAGS="$CFLAGS $PTHREAD_CFLAGS" + LIBS="$PTHREAD_LIBS $LIBS" + + # 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 +# if $ax_pthread_check_cond +# error "$ax_pthread_check_macro must be defined" +# endif + 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], + []) + + CFLAGS="$ax_pthread_save_CFLAGS" + LIBS="$ax_pthread_save_LIBS" + + AC_MSG_RESULT([$ax_pthread_ok]) + AS_IF([test "x$ax_pthread_ok" = "xyes"], [break]) + + PTHREAD_LIBS="" + PTHREAD_CFLAGS="" +done +fi + +# Various other checks: +if test "x$ax_pthread_ok" = "xyes"; then + ax_pthread_save_CFLAGS="$CFLAGS" + ax_pthread_save_LIBS="$LIBS" + CFLAGS="$CFLAGS $PTHREAD_CFLAGS" + LIBS="$PTHREAD_LIBS $LIBS" + + # Detect AIX lossage: JOINABLE attribute is called UNDETACHED. + AC_CACHE_CHECK([for joinable pthread attribute], + [ax_cv_PTHREAD_JOINABLE_ATTR], + [ax_cv_PTHREAD_JOINABLE_ATTR=unknown + for ax_pthread_attr in PTHREAD_CREATE_JOINABLE PTHREAD_CREATE_UNDETACHED; do + AC_LINK_IFELSE([AC_LANG_PROGRAM([#include ], + [int attr = $ax_pthread_attr; return attr /* ; */])], + [ax_cv_PTHREAD_JOINABLE_ATTR=$ax_pthread_attr; break], + []) + done + ]) + AS_IF([test "x$ax_cv_PTHREAD_JOINABLE_ATTR" != "xunknown" && \ + test "x$ax_cv_PTHREAD_JOINABLE_ATTR" != "xPTHREAD_CREATE_JOINABLE" && \ + test "x$ax_pthread_joinable_attr_defined" != "xyes"], + [AC_DEFINE_UNQUOTED([PTHREAD_CREATE_JOINABLE], + [$ax_cv_PTHREAD_JOINABLE_ATTR], + [Define to necessary symbol if this constant + uses a non-standard name on your system.]) + ax_pthread_joinable_attr_defined=yes + ]) + + AC_CACHE_CHECK([whether more special flags are required for pthreads], + [ax_cv_PTHREAD_SPECIAL_FLAGS], + [ax_cv_PTHREAD_SPECIAL_FLAGS=no + case $host_os in + solaris*) + ax_cv_PTHREAD_SPECIAL_FLAGS="-D_POSIX_PTHREAD_SEMANTICS" + ;; + esac + ]) + AS_IF([test "x$ax_cv_PTHREAD_SPECIAL_FLAGS" != "xno" && \ + test "x$ax_pthread_special_flags_added" != "xyes"], + [PTHREAD_CFLAGS="$ax_cv_PTHREAD_SPECIAL_FLAGS $PTHREAD_CFLAGS" + ax_pthread_special_flags_added=yes]) + + AC_CACHE_CHECK([for PTHREAD_PRIO_INHERIT], + [ax_cv_PTHREAD_PRIO_INHERIT], + [AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include ]], + [[int i = PTHREAD_PRIO_INHERIT;]])], + [ax_cv_PTHREAD_PRIO_INHERIT=yes], + [ax_cv_PTHREAD_PRIO_INHERIT=no]) + ]) + AS_IF([test "x$ax_cv_PTHREAD_PRIO_INHERIT" = "xyes" && \ + test "x$ax_pthread_prio_inherit_defined" != "xyes"], + [AC_DEFINE([HAVE_PTHREAD_PRIO_INHERIT], [1], [Have PTHREAD_PRIO_INHERIT.]) + ax_pthread_prio_inherit_defined=yes + ]) + + CFLAGS="$ax_pthread_save_CFLAGS" + LIBS="$ax_pthread_save_LIBS" + + # More AIX lossage: compile with *_r variant + if test "x$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/ltsugar.m4 b/m4/ltsugar.m4 deleted file mode 100644 index 9000a057d..000000000 --- a/m4/ltsugar.m4 +++ /dev/null @@ -1,123 +0,0 @@ -# ltsugar.m4 -- libtool m4 base layer. -*-Autoconf-*- -# -# Copyright (C) 2004, 2005, 2007, 2008 Free Software Foundation, Inc. -# Written by Gary V. 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