From df303aff6601a893cf83c26ffd6c7eb5fb6b067e Mon Sep 17 00:00:00 2001 From: Tom Lane Date: Mon, 19 Nov 2018 15:05:33 -0500 Subject: [PATCH] Update config/ax_pthread.m4 to latest upstream version. This change doesn't fix any bugs that we've heard about, but it seems like a good idea on general principles to track upstream occasionally. Discussion: https://postgr.es/m/3320.1542647565@sss.pgh.pa.us --- config/ax_pthread.m4 | 309 +++++++++++++++++++++----------- configure | 411 ++++++++++++++++++++++++++++++++----------- 2 files changed, 515 insertions(+), 205 deletions(-) diff --git a/config/ax_pthread.m4 b/config/ax_pthread.m4 index f6445a6ffa..5fbf9fe0d6 100644 --- a/config/ax_pthread.m4 +++ b/config/ax_pthread.m4 @@ -1,5 +1,5 @@ # =========================================================================== -# http://www.gnu.org/software/autoconf-archive/ax_pthread.html +# https://www.gnu.org/software/autoconf-archive/ax_pthread.html # =========================================================================== # # SYNOPSIS @@ -19,10 +19,10 @@ # 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 +# but also to link with them as well. For example, you might link with # $PTHREAD_CC $CFLAGS $PTHREAD_CFLAGS $LDFLAGS ... $PTHREAD_LIBS $LIBS # -# If you are only building threads programs, you may wish to use these +# If you are only building threaded programs, you may wish to use these # variables in your default LIBS, CFLAGS, and CC: # # LIBS="$PTHREAD_LIBS $LIBS" @@ -30,8 +30,8 @@ # CC="$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). +# 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 @@ -67,7 +67,7 @@ # Public License for more details. # # You should have received a copy of the GNU General Public License along -# with this program. If not, see . +# 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 @@ -82,12 +82,13 @@ # 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 +#serial 24 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 @@ -98,20 +99,23 @@ ax_pthread_ok=no # 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="$CFLAGS" +if test "x$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 $PTHREAD_CFLAGS" - save_LIBS="$LIBS" 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"$ax_pthread_ok" = xno; then + if test "x$ax_pthread_ok" = "xno"; then PTHREAD_LIBS="" PTHREAD_CFLAGS="" fi - LIBS="$save_LIBS" - CFLAGS="$save_CFLAGS" + 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 @@ -124,7 +128,7 @@ fi # 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 -mt -mthreads pthread --thread-safe pthread-config" +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: @@ -133,14 +137,14 @@ ax_pthread_flags="pthreads none -Kthread -kthread lthread -pthread -pthreads -mt # 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), Tru64 -# -pthreads: Solaris/gcc +# (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) +# 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++ @@ -148,6 +152,14 @@ ax_pthread_flags="pthreads none -Kthread -kthread lthread -pthread -pthreads -mt 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 @@ -174,42 +186,144 @@ case $host_os in solaris*) - # Newer versions of Solaris require the "-mt -lpthread" pair, and we - # check that first. On some older versions, libc contains stubbed + # 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 look for -pthreads and -lpthread shortly thereafter. + # 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 -pthreads -pthread pthread $ax_pthread_flags" + ax_pthread_flags="-mt,pthread pthread $ax_pthread_flags" ;; esac -# Older versions of Clang only give a warning instead of an error for an -# unrecognized option, unless we specify -Werror. (We throw in some extra -# Clang warning flags for good measure.) +# GCC generally uses -pthread, or -pthreads on some platforms (e.g. SPARC) -AC_CACHE_CHECK([if compiler needs certain flags to reject unknown flags], - [ax_cv_PTHREAD_REJECT_UNKNOWN], - [ax_cv_PTHREAD_REJECT_UNKNOWN=unknown - save_CFLAGS="$CFLAGS" - ax_pthread_extra_flags="-Wunknown-warning-option -Wunused-command-line-argument" - CFLAGS="$CFLAGS $ax_pthread_extra_flags -Wfoobaz -foobaz" - AC_COMPILE_IFELSE([AC_LANG_PROGRAM([int foo(void);],[foo()])], - [ax_cv_PTHREAD_REJECT_UNKNOWN="-Werror $ax_pthread_extra_flags"], - [ax_cv_PTHREAD_REJECT_UNKNOWN=no]) - CFLAGS="$save_CFLAGS" +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_extra_flags= -AS_IF([test "x$ax_cv_PTHREAD_REJECT_UNKNOWN" != "xno"], - [ax_pthread_extra_flags="$ax_cv_PTHREAD_REJECT_UNKNOWN"]) +ax_pthread_clang="$ax_cv_PTHREAD_CLANG" -if test x"$ax_pthread_ok" = xno; then -for flag in $ax_pthread_flags; do +ax_pthread_clang_warning=no - case $flag in +# Clang needs special handling, because older versions handle the -pthread +# option in a rather... idiosyncratic way + +if test "x$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]) ;; @@ -221,27 +335,27 @@ for flag in $ax_pthread_flags; do ;; -*) - AC_MSG_CHECKING([whether pthreads work with $flag]) - PTHREAD_CFLAGS="$flag" + 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]) - if test x"$ax_pthread_config" = xno; then continue; fi + AS_IF([test "x$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$flag]) - PTHREAD_LIBS="-l$flag" + AC_MSG_CHECKING([for the pthreads library -l$ax_pthread_try_flag]) + PTHREAD_LIBS="-l$ax_pthread_try_flag" ;; esac - save_LIBS="$LIBS" - save_CFLAGS="$CFLAGS" + ax_pthread_save_CFLAGS="$CFLAGS" + ax_pthread_save_LIBS="$LIBS" + CFLAGS="$CFLAGS $PTHREAD_CFLAGS" LIBS="$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 @@ -252,7 +366,11 @@ for flag in $ax_pthread_flags; do # 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; @@ -261,16 +379,14 @@ for flag in $ax_pthread_flags; do pthread_attr_init(&attr); pthread_cleanup_push(routine, 0); pthread_cleanup_pop(0) /* ; */])], - [ax_pthread_ok=yes], - []) + [ax_pthread_ok=yes], + []) - LIBS="$save_LIBS" - CFLAGS="$save_CFLAGS" + CFLAGS="$ax_pthread_save_CFLAGS" + LIBS="$ax_pthread_save_LIBS" AC_MSG_RESULT([$ax_pthread_ok]) - if test "x$ax_pthread_ok" = xyes; then - break; - fi + AS_IF([test "x$ax_pthread_ok" = "xyes"], [break]) PTHREAD_LIBS="" PTHREAD_CFLAGS="" @@ -278,49 +394,41 @@ done fi # Various other checks: -if test "x$ax_pthread_ok" = xyes; then - save_LIBS="$LIBS" - LIBS="$PTHREAD_LIBS $LIBS" - save_CFLAGS="$CFLAGS" +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 attr in PTHREAD_CREATE_JOINABLE PTHREAD_CREATE_UNDETACHED; do + for ax_pthread_attr in PTHREAD_CREATE_JOINABLE PTHREAD_CREATE_UNDETACHED; do AC_LINK_IFELSE([AC_LANG_PROGRAM([#include ], - [int attr = $attr; return attr /* ; */])], - [ax_cv_PTHREAD_JOINABLE_ATTR=$attr; break], + [int attr = $ax_pthread_attr; return attr /* ; */])], + [ax_cv_PTHREAD_JOINABLE_ATTR=$ax_pthread_attr; break], []) done ]) - AS_IF([test "$ax_cv_PTHREAD_JOINABLE_ATTR" != unknown && \ - test "$ax_cv_PTHREAD_JOINABLE_ATTR" != PTHREAD_CREATE_JOINABLE], + 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.])]) + uses a non-standard name on your system.]) + ax_pthread_joinable_attr_defined=yes + ]) - AC_CACHE_CHECK([if more special flags are required for pthreads], + AC_CACHE_CHECK([whether more special flags are required for pthreads], [ax_cv_PTHREAD_SPECIAL_FLAGS], [ax_cv_PTHREAD_SPECIAL_FLAGS=no - ax_pthread_special_flags_added=no - AC_EGREP_CPP([AX_PTHREAD_NEED_SPECIAL_FLAG], - [ -# if !defined(_REENTRANT) && !defined(_THREAD_SAFE) - AX_PTHREAD_NEED_SPECIAL_FLAG -# endif - ], - [case $host_os in - aix* | freebsd*) - ax_cv_PTHREAD_SPECIAL_FLAGS="-D_THREAD_SAFE" - ;; - darwin* | hpux* | osf* | solaris*) - ax_cv_PTHREAD_SPECIAL_FLAGS="-D_REENTRANT" - ;; - esac - ]) + 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$ax_pthread_special_flags_added" != "xyes"], @@ -334,23 +442,26 @@ if test "x$ax_pthread_ok" = xyes; then [ax_cv_PTHREAD_PRIO_INHERIT=yes], [ax_cv_PTHREAD_PRIO_INHERIT=no]) ]) - AS_IF([test "x$ax_cv_PTHREAD_PRIO_INHERIT" = "xyes"], - [AC_DEFINE([HAVE_PTHREAD_PRIO_INHERIT], [1], [Have PTHREAD_PRIO_INHERIT.])]) + AS_IF([test "x$ax_cv_PTHREAD_PRIO_INHERIT" = "xyes" && \ + test "x$ax_pthread_prio_inherit_defined" != "xyes"], + [AC_DEFINE([HAVE_PTHREAD_PRIO_INHERIT], [1], [Have PTHREAD_PRIO_INHERIT.]) + ax_pthread_prio_inherit_defined=yes + ]) - LIBS="$save_LIBS" - CFLAGS="$save_CFLAGS" + CFLAGS="$ax_pthread_save_CFLAGS" + LIBS="$ax_pthread_save_LIBS" # More AIX lossage: compile with *_r variant - if test "x$GCC" != xyes; then + 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],[$CC])])]) + [x*/c89|x*/c89_128|x*/c99|x*/c99_128|x*/cc|x*/cc128|x*/xlc|x*/xlc_v6|x*/xlc128|x*/xlc128_v6], + [#handle absolute path differently from PATH based program lookup + AS_CASE(["x$CC"], + [x/*], + [AS_IF([AS_EXECUTABLE_P([${CC}_r])],[PTHREAD_CC="${CC}_r"])], + [AC_CHECK_PROGS([PTHREAD_CC],[${CC}_r],[$CC])])]) ;; esac fi @@ -363,7 +474,7 @@ AC_SUBST([PTHREAD_CFLAGS]) AC_SUBST([PTHREAD_CC]) # Finally, execute ACTION-IF-FOUND/ACTION-IF-NOT-FOUND: -if test x"$ax_pthread_ok" = xyes; then +if test "x$ax_pthread_ok" = "xyes"; then ifelse([$1],,[AC_DEFINE([HAVE_PTHREAD],[1],[Define if you have POSIX threads libraries and header files.])],[$1]) : else diff --git a/configure b/configure index aeb8905a9d..dce6d98cf6 100755 --- a/configure +++ b/configure @@ -658,6 +658,7 @@ PTHREAD_CFLAGS PTHREAD_LIBS PTHREAD_CC ax_pthread_config +SED ZIC python_additional_libs python_libspec @@ -10004,6 +10005,75 @@ fi # invocation below is the first one in the script, and autoconf generates # additional code for that, which must not be inside the if-block. AS_IF # knows how to do that. +{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for a sed that does not truncate output" >&5 +$as_echo_n "checking for a sed that does not truncate output... " >&6; } +if ${ac_cv_path_SED+:} false; then : + $as_echo_n "(cached) " >&6 +else + ac_script=s/aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa/bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb/ + for ac_i in 1 2 3 4 5 6 7; do + ac_script="$ac_script$as_nl$ac_script" + done + echo "$ac_script" 2>/dev/null | sed 99q >conftest.sed + { ac_script=; unset ac_script;} + if test -z "$SED"; then + ac_path_SED_found=false + # Loop through the user's path and test for each of PROGNAME-LIST + as_save_IFS=$IFS; IFS=$PATH_SEPARATOR +for as_dir in $PATH +do + IFS=$as_save_IFS + test -z "$as_dir" && as_dir=. + for ac_prog in sed gsed; do + for ac_exec_ext in '' $ac_executable_extensions; do + ac_path_SED="$as_dir/$ac_prog$ac_exec_ext" + as_fn_executable_p "$ac_path_SED" || continue +# Check for GNU ac_path_SED and select it if it is found. + # Check for GNU $ac_path_SED +case `"$ac_path_SED" --version 2>&1` in +*GNU*) + ac_cv_path_SED="$ac_path_SED" ac_path_SED_found=:;; +*) + ac_count=0 + $as_echo_n 0123456789 >"conftest.in" + while : + do + cat "conftest.in" "conftest.in" >"conftest.tmp" + mv "conftest.tmp" "conftest.in" + cp "conftest.in" "conftest.nl" + $as_echo '' >> "conftest.nl" + "$ac_path_SED" -f conftest.sed < "conftest.nl" >"conftest.out" 2>/dev/null || break + diff "conftest.out" "conftest.nl" >/dev/null 2>&1 || break + as_fn_arith $ac_count + 1 && ac_count=$as_val + if test $ac_count -gt ${ac_path_SED_max-0}; then + # Best one so far, save it but keep looking for a better one + ac_cv_path_SED="$ac_path_SED" + ac_path_SED_max=$ac_count + fi + # 10*(2^10) chars as input seems more than enough + test $ac_count -gt 10 && break + done + rm -f conftest.in conftest.tmp conftest.nl conftest.out;; +esac + + $ac_path_SED_found && break 3 + done + done + done +IFS=$as_save_IFS + if test -z "$ac_cv_path_SED"; then + as_fn_error $? "no acceptable sed could be found in \$PATH" "$LINENO" 5 + fi +else + ac_cv_path_SED=$SED +fi + +fi +{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_path_SED" >&5 +$as_echo "$ac_cv_path_SED" >&6; } + SED="$ac_cv_path_SED" + rm -f conftest.sed + { $as_echo "$as_me:${as_lineno-$LINENO}: checking for ANSI C header files" >&5 $as_echo_n "checking for ANSI C header files... " >&6; } if ${ac_cv_header_stdc+:} false; then : @@ -10138,6 +10208,7 @@ if test "$enable_thread_safety" = yes -a "$PORTNAME" != "win32"; then : + ac_ext=c ac_cpp='$CPP $CPPFLAGS' ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5' @@ -10153,10 +10224,14 @@ ax_pthread_ok=no # 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="$CFLAGS" +if test "x$PTHREAD_CFLAGS$PTHREAD_LIBS" != "x"; then + ax_pthread_save_CC="$CC" + ax_pthread_save_CFLAGS="$CFLAGS" + ax_pthread_save_LIBS="$LIBS" + if test "x$PTHREAD_CC" != "x"; then : + CC="$PTHREAD_CC" +fi CFLAGS="$CFLAGS $PTHREAD_CFLAGS" - save_LIBS="$LIBS" LIBS="$PTHREAD_LIBS $LIBS" { $as_echo "$as_me:${as_lineno-$LINENO}: checking for pthread_join using $CC $PTHREAD_CFLAGS $PTHREAD_LIBS" >&5 $as_echo_n "checking for pthread_join using $CC $PTHREAD_CFLAGS $PTHREAD_LIBS... " >&6; } @@ -10185,12 +10260,13 @@ rm -f core conftest.err conftest.$ac_objext \ conftest$ac_exeext conftest.$ac_ext { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ax_pthread_ok" >&5 $as_echo "$ax_pthread_ok" >&6; } - if test x"$ax_pthread_ok" = xno; then + if test "x$ax_pthread_ok" = "xno"; then PTHREAD_LIBS="" PTHREAD_CFLAGS="" fi - LIBS="$save_LIBS" - CFLAGS="$save_CFLAGS" + 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 @@ -10203,7 +10279,7 @@ fi # 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 -mt -mthreads pthread --thread-safe pthread-config" +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: @@ -10212,14 +10288,14 @@ ax_pthread_flags="pthreads none -Kthread -kthread lthread -pthread -pthreads -mt # 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), Tru64 -# -pthreads: Solaris/gcc +# (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) +# 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++ @@ -10227,6 +10303,14 @@ ax_pthread_flags="pthreads none -Kthread -kthread lthread -pthread -pthreads -mt 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 @@ -10261,63 +10345,184 @@ rm -f conftest* solaris*) - # Newer versions of Solaris require the "-mt -lpthread" pair, and we - # check that first. On some older versions, libc contains stubbed + # 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 look for -pthreads and -lpthread shortly thereafter. + # 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 -pthreads -pthread pthread $ax_pthread_flags" + ax_pthread_flags="-mt,pthread pthread $ax_pthread_flags" ;; esac -# Older versions of Clang only give a warning instead of an error for an -# unrecognized option, unless we specify -Werror. (We throw in some extra -# Clang warning flags for good measure.) +# GCC generally uses -pthread, or -pthreads on some platforms (e.g. SPARC) -{ $as_echo "$as_me:${as_lineno-$LINENO}: checking if compiler needs certain flags to reject unknown flags" >&5 -$as_echo_n "checking if compiler needs certain flags to reject unknown flags... " >&6; } -if ${ax_cv_PTHREAD_REJECT_UNKNOWN+:} false; then : +if test "x$GCC" = "xyes"; then : + ax_pthread_flags="-pthread -pthreads $ax_pthread_flags" +fi + +# 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 $host_os in + darwin* | hpux* | linux* | osf* | solaris*) + ax_pthread_check_macro="_REENTRANT" + ;; + + aix*) + ax_pthread_check_macro="_THREAD_SAFE" + ;; + + *) + ax_pthread_check_macro="--" + ;; +esac +if test "x$ax_pthread_check_macro" = "x--"; then : + ax_pthread_check_cond=0 +else + ax_pthread_check_cond="!defined($ax_pthread_check_macro)" +fi + +# Are we compiling with Clang? + +{ $as_echo "$as_me:${as_lineno-$LINENO}: checking whether $CC is Clang" >&5 +$as_echo_n "checking whether $CC is Clang... " >&6; } +if ${ax_cv_PTHREAD_CLANG+:} false; then : $as_echo_n "(cached) " >&6 else - ax_cv_PTHREAD_REJECT_UNKNOWN=unknown - save_CFLAGS="$CFLAGS" - ax_pthread_extra_flags="-Wunknown-warning-option -Wunused-command-line-argument" - CFLAGS="$CFLAGS $ax_pthread_extra_flags -Wfoobaz -foobaz" - cat confdefs.h - <<_ACEOF >conftest.$ac_ext + ax_cv_PTHREAD_CLANG=no + # Note that Autoconf sets GCC=yes for Clang as well as GCC + if test "x$GCC" = "xyes"; then + cat confdefs.h - <<_ACEOF >conftest.$ac_ext /* end confdefs.h. */ -int foo(void); -int -main () -{ -foo() - ; - return 0; -} +/* Note: Clang 2.7 lacks __clang_[a-z]+__ */ +# if defined(__clang__) && defined(__llvm__) + AX_PTHREAD_CC_IS_CLANG +# endif + _ACEOF -if ac_fn_c_try_compile "$LINENO"; then : - ax_cv_PTHREAD_REJECT_UNKNOWN="-Werror $ax_pthread_extra_flags" +if (eval "$ac_cpp conftest.$ac_ext") 2>&5 | + $EGREP "AX_PTHREAD_CC_IS_CLANG" >/dev/null 2>&1; then : + ax_cv_PTHREAD_CLANG=yes +fi +rm -f conftest* + + fi + +fi +{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ax_cv_PTHREAD_CLANG" >&5 +$as_echo "$ax_cv_PTHREAD_CLANG" >&6; } +ax_pthread_clang="$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. + + { $as_echo "$as_me:${as_lineno-$LINENO}: checking whether Clang needs flag to prevent \"argument unused\" warning when linking with -pthread" >&5 +$as_echo_n "checking whether Clang needs flag to prevent \"argument unused\" warning when linking with -pthread... " >&6; } +if ${ax_cv_PTHREAD_CLANG_NO_WARN_FLAG+:} false; then : + $as_echo_n "(cached) " >&6 else - ax_cv_PTHREAD_REJECT_UNKNOWN=no + 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="$CFLAGS" + for ax_pthread_try in '' -Qunused-arguments -Wno-unused-command-line-argument unknown; do + if test "x$ax_pthread_try" = "xunknown"; then : + break fi -rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext - CFLAGS="$save_CFLAGS" + CFLAGS="-Werror -Wunknown-warning-option $ax_pthread_try -pthread $ax_pthread_save_CFLAGS" + ac_link="$ax_pthread_save_ac_link" + cat confdefs.h - <<_ACEOF >conftest.$ac_ext +/* end confdefs.h. */ +int main(void){return 0;} +_ACEOF +if ac_fn_c_try_link "$LINENO"; then : + ac_link="$ax_pthread_2step_ac_link" + cat confdefs.h - <<_ACEOF >conftest.$ac_ext +/* end confdefs.h. */ +int main(void){return 0;} +_ACEOF +if ac_fn_c_try_link "$LINENO"; then : + break +fi +rm -f core conftest.err conftest.$ac_objext \ + conftest$ac_exeext conftest.$ac_ext fi -{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ax_cv_PTHREAD_REJECT_UNKNOWN" >&5 -$as_echo "$ax_cv_PTHREAD_REJECT_UNKNOWN" >&6; } -ax_pthread_extra_flags= -if test "x$ax_cv_PTHREAD_REJECT_UNKNOWN" != "xno"; then : - ax_pthread_extra_flags="$ax_cv_PTHREAD_REJECT_UNKNOWN" +rm -f core conftest.err conftest.$ac_objext \ + conftest$ac_exeext conftest.$ac_ext + done + ac_link="$ax_pthread_save_ac_link" + CFLAGS="$ax_pthread_save_CFLAGS" + if test "x$ax_pthread_try" = "x"; then : + ax_pthread_try=no fi + ax_cv_PTHREAD_CLANG_NO_WARN_FLAG="$ax_pthread_try" -if test x"$ax_pthread_ok" = xno; then -for flag in $ax_pthread_flags; do +fi +{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ax_cv_PTHREAD_CLANG_NO_WARN_FLAG" >&5 +$as_echo "$ax_cv_PTHREAD_CLANG_NO_WARN_FLAG" >&6; } - case $flag in + case "$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) { $as_echo "$as_me:${as_lineno-$LINENO}: checking whether pthreads work without any flags" >&5 $as_echo_n "checking whether pthreads work without any flags... " >&6; } @@ -10331,9 +10536,9 @@ $as_echo_n "checking whether pthreads work with -mt -lpthread... " >&6; } ;; -*) - { $as_echo "$as_me:${as_lineno-$LINENO}: checking whether pthreads work with $flag" >&5 -$as_echo_n "checking whether pthreads work with $flag... " >&6; } - PTHREAD_CFLAGS="$flag" + { $as_echo "$as_me:${as_lineno-$LINENO}: checking whether pthreads work with $ax_pthread_try_flag" >&5 +$as_echo_n "checking whether pthreads work with $ax_pthread_try_flag... " >&6; } + PTHREAD_CFLAGS="$ax_pthread_try_flag" ;; pthread-config) @@ -10375,22 +10580,24 @@ $as_echo "no" >&6; } fi - if test x"$ax_pthread_config" = xno; then continue; fi + if test "x$ax_pthread_config" = "xno"; then : + continue +fi PTHREAD_CFLAGS="`pthread-config --cflags`" PTHREAD_LIBS="`pthread-config --ldflags` `pthread-config --libs`" ;; *) - { $as_echo "$as_me:${as_lineno-$LINENO}: checking for the pthreads library -l$flag" >&5 -$as_echo_n "checking for the pthreads library -l$flag... " >&6; } - PTHREAD_LIBS="-l$flag" + { $as_echo "$as_me:${as_lineno-$LINENO}: checking for the pthreads library -l$ax_pthread_try_flag" >&5 +$as_echo_n "checking for the pthreads library -l$ax_pthread_try_flag... " >&6; } + PTHREAD_LIBS="-l$ax_pthread_try_flag" ;; esac - save_LIBS="$LIBS" - save_CFLAGS="$CFLAGS" + ax_pthread_save_CFLAGS="$CFLAGS" + ax_pthread_save_LIBS="$LIBS" + CFLAGS="$CFLAGS $PTHREAD_CFLAGS" LIBS="$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 @@ -10401,9 +10608,13 @@ $as_echo_n "checking for the pthreads library -l$flag... " >&6; } # 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. + cat confdefs.h - <<_ACEOF >conftest.$ac_ext /* end confdefs.h. */ #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; } int @@ -10425,14 +10636,14 @@ fi rm -f core conftest.err conftest.$ac_objext \ conftest$ac_exeext conftest.$ac_ext - LIBS="$save_LIBS" - CFLAGS="$save_CFLAGS" + CFLAGS="$ax_pthread_save_CFLAGS" + LIBS="$ax_pthread_save_LIBS" { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ax_pthread_ok" >&5 $as_echo "$ax_pthread_ok" >&6; } - if test "x$ax_pthread_ok" = xyes; then - break; - fi + if test "x$ax_pthread_ok" = "xyes"; then : + break +fi PTHREAD_LIBS="" PTHREAD_CFLAGS="" @@ -10440,11 +10651,11 @@ done fi # Various other checks: -if test "x$ax_pthread_ok" = xyes; then - save_LIBS="$LIBS" - LIBS="$PTHREAD_LIBS $LIBS" - save_CFLAGS="$CFLAGS" +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. { $as_echo "$as_me:${as_lineno-$LINENO}: checking for joinable pthread attribute" >&5 @@ -10453,20 +10664,20 @@ if ${ax_cv_PTHREAD_JOINABLE_ATTR+:} false; then : $as_echo_n "(cached) " >&6 else ax_cv_PTHREAD_JOINABLE_ATTR=unknown - for attr in PTHREAD_CREATE_JOINABLE PTHREAD_CREATE_UNDETACHED; do + for ax_pthread_attr in PTHREAD_CREATE_JOINABLE PTHREAD_CREATE_UNDETACHED; do cat confdefs.h - <<_ACEOF >conftest.$ac_ext /* end confdefs.h. */ #include int main () { -int attr = $attr; return attr /* ; */ +int attr = $ax_pthread_attr; return attr /* ; */ ; return 0; } _ACEOF if ac_fn_c_try_link "$LINENO"; then : - ax_cv_PTHREAD_JOINABLE_ATTR=$attr; break + ax_cv_PTHREAD_JOINABLE_ATTR=$ax_pthread_attr; break fi rm -f core conftest.err conftest.$ac_objext \ conftest$ac_exeext conftest.$ac_ext @@ -10475,44 +10686,29 @@ rm -f core conftest.err conftest.$ac_objext \ fi { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ax_cv_PTHREAD_JOINABLE_ATTR" >&5 $as_echo "$ax_cv_PTHREAD_JOINABLE_ATTR" >&6; } - if test "$ax_cv_PTHREAD_JOINABLE_ATTR" != unknown && \ - test "$ax_cv_PTHREAD_JOINABLE_ATTR" != PTHREAD_CREATE_JOINABLE; then : + 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"; then : cat >>confdefs.h <<_ACEOF #define PTHREAD_CREATE_JOINABLE $ax_cv_PTHREAD_JOINABLE_ATTR _ACEOF + ax_pthread_joinable_attr_defined=yes + fi - { $as_echo "$as_me:${as_lineno-$LINENO}: checking if more special flags are required for pthreads" >&5 -$as_echo_n "checking if more special flags are required for pthreads... " >&6; } + { $as_echo "$as_me:${as_lineno-$LINENO}: checking whether more special flags are required for pthreads" >&5 +$as_echo_n "checking whether more special flags are required for pthreads... " >&6; } if ${ax_cv_PTHREAD_SPECIAL_FLAGS+:} false; then : $as_echo_n "(cached) " >&6 else ax_cv_PTHREAD_SPECIAL_FLAGS=no - ax_pthread_special_flags_added=no - cat confdefs.h - <<_ACEOF >conftest.$ac_ext -/* end confdefs.h. */ - -# if !defined(_REENTRANT) && !defined(_THREAD_SAFE) - AX_PTHREAD_NEED_SPECIAL_FLAG -# endif - -_ACEOF -if (eval "$ac_cpp conftest.$ac_ext") 2>&5 | - $EGREP "AX_PTHREAD_NEED_SPECIAL_FLAG" >/dev/null 2>&1; then : - case $host_os in - aix* | freebsd*) - ax_cv_PTHREAD_SPECIAL_FLAGS="-D_THREAD_SAFE" - ;; - darwin* | hpux* | osf* | solaris*) - ax_cv_PTHREAD_SPECIAL_FLAGS="-D_REENTRANT" - ;; - esac - -fi -rm -f conftest* - + case $host_os in + solaris*) + ax_cv_PTHREAD_SPECIAL_FLAGS="-D_POSIX_PTHREAD_SEMANTICS" + ;; + esac fi { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ax_cv_PTHREAD_SPECIAL_FLAGS" >&5 @@ -10550,23 +10746,26 @@ rm -f core conftest.err conftest.$ac_objext \ fi { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ax_cv_PTHREAD_PRIO_INHERIT" >&5 $as_echo "$ax_cv_PTHREAD_PRIO_INHERIT" >&6; } - if test "x$ax_cv_PTHREAD_PRIO_INHERIT" = "xyes"; then : + if test "x$ax_cv_PTHREAD_PRIO_INHERIT" = "xyes" && \ + test "x$ax_pthread_prio_inherit_defined" != "xyes"; then : $as_echo "#define HAVE_PTHREAD_PRIO_INHERIT 1" >>confdefs.h + ax_pthread_prio_inherit_defined=yes + fi - LIBS="$save_LIBS" - CFLAGS="$save_CFLAGS" + CFLAGS="$ax_pthread_save_CFLAGS" + LIBS="$ax_pthread_save_LIBS" # More AIX lossage: compile with *_r variant - if test "x$GCC" != xyes; then + if test "x$GCC" != "xyes"; then case $host_os in aix*) case "x/$CC" in #( 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 - case "x$CC" in #( + case "x$CC" in #( x/*) : if as_fn_executable_p ${CC}_r; then : PTHREAD_CC="${CC}_r" @@ -10631,7 +10830,7 @@ test -n "$PTHREAD_CC" || PTHREAD_CC="$CC" # Finally, execute ACTION-IF-FOUND/ACTION-IF-NOT-FOUND: -if test x"$ax_pthread_ok" = xyes; then +if test "x$ax_pthread_ok" = "xyes"; then $as_echo "#define HAVE_PTHREAD 1" >>confdefs.h