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autoconf: update ax_pthread.m4
from git://git.savannah.gnu.org/autoconf-archive.git
100644 blob d383ad5c6d m4/ax_pthread.m4
dd94691 AX_PTHREAD: add support for Clang
386b290 AX_PTHREAD: fix support for AIX
e40cfd6 AX_PTHREAD: improve support for AIX
Change-Id: Ic1f1edc656e4e917b88f151493147f650b94242f
This commit is contained in:
James Zern
parent
fff2a11b03
commit
7c76255dd4
@ -82,7 +82,7 @@
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# modified version of the Autoconf Macro, you may extend this special
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# exception to the GPL to apply to your modified version as well.
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#serial 18
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#serial 21
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AU_ALIAS([ACX_PTHREAD], [AX_PTHREAD])
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AC_DEFUN([AX_PTHREAD], [
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@ -103,8 +103,8 @@ if test x"$PTHREAD_LIBS$PTHREAD_CFLAGS" != x; then
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save_LIBS="$LIBS"
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LIBS="$PTHREAD_LIBS $LIBS"
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AC_MSG_CHECKING([for pthread_join in LIBS=$PTHREAD_LIBS with CFLAGS=$PTHREAD_CFLAGS])
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AC_TRY_LINK_FUNC(pthread_join, ax_pthread_ok=yes)
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AC_MSG_RESULT($ax_pthread_ok)
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AC_TRY_LINK_FUNC([pthread_join], [ax_pthread_ok=yes])
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AC_MSG_RESULT([$ax_pthread_ok])
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if test x"$ax_pthread_ok" = xno; then
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PTHREAD_LIBS=""
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PTHREAD_CFLAGS=""
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@ -164,6 +164,20 @@ case ${host_os} in
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;;
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esac
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# Clang doesn't consider unrecognized options an error unless we specify
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# -Werror. We throw in some extra Clang-specific options to ensure that
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# this doesn't happen for GCC, which also accepts -Werror.
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AC_MSG_CHECKING([if compiler needs -Werror to reject unknown flags])
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save_CFLAGS="$CFLAGS"
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ax_pthread_extra_flags="-Werror"
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CFLAGS="$CFLAGS $ax_pthread_extra_flags -Wunknown-warning-option -Wsizeof-array-argument"
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AC_COMPILE_IFELSE([AC_LANG_PROGRAM([int foo(void);],[foo()])],
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[AC_MSG_RESULT([yes])],
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[ax_pthread_extra_flags=
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AC_MSG_RESULT([no])])
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CFLAGS="$save_CFLAGS"
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if test x"$ax_pthread_ok" = xno; then
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for flag in $ax_pthread_flags; do
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@ -178,7 +192,7 @@ for flag in $ax_pthread_flags; do
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;;
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pthread-config)
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AC_CHECK_PROG(ax_pthread_config, pthread-config, yes, no)
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AC_CHECK_PROG([ax_pthread_config], [pthread-config], [yes], [no])
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if test x"$ax_pthread_config" = xno; then continue; fi
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PTHREAD_CFLAGS="`pthread-config --cflags`"
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PTHREAD_LIBS="`pthread-config --ldflags` `pthread-config --libs`"
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@ -193,7 +207,7 @@ for flag in $ax_pthread_flags; do
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save_LIBS="$LIBS"
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save_CFLAGS="$CFLAGS"
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LIBS="$PTHREAD_LIBS $LIBS"
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CFLAGS="$CFLAGS $PTHREAD_CFLAGS"
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CFLAGS="$CFLAGS $PTHREAD_CFLAGS $ax_pthread_extra_flags"
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# Check for various functions. We must include pthread.h,
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# since some functions may be macros. (On the Sequent, we
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@ -219,7 +233,7 @@ for flag in $ax_pthread_flags; do
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LIBS="$save_LIBS"
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CFLAGS="$save_CFLAGS"
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AC_MSG_RESULT($ax_pthread_ok)
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AC_MSG_RESULT([$ax_pthread_ok])
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if test "x$ax_pthread_ok" = xyes; then
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break;
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fi
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@ -245,9 +259,9 @@ if test "x$ax_pthread_ok" = xyes; then
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[attr_name=$attr; break],
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[])
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done
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AC_MSG_RESULT($attr_name)
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AC_MSG_RESULT([$attr_name])
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if test "$attr_name" != PTHREAD_CREATE_JOINABLE; then
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AC_DEFINE_UNQUOTED(PTHREAD_CREATE_JOINABLE, $attr_name,
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AC_DEFINE_UNQUOTED([PTHREAD_CREATE_JOINABLE], [$attr_name],
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[Define to necessary symbol if this constant
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uses a non-standard name on your system.])
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fi
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@ -261,45 +275,54 @@ if test "x$ax_pthread_ok" = xyes; then
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if test "$GCC" = "yes"; then
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flag="-D_REENTRANT"
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else
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# TODO: What about Clang on Solaris?
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flag="-mt -D_REENTRANT"
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fi
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;;
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esac
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AC_MSG_RESULT(${flag})
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AC_MSG_RESULT([$flag])
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if test "x$flag" != xno; then
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PTHREAD_CFLAGS="$flag $PTHREAD_CFLAGS"
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fi
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AC_CACHE_CHECK([for PTHREAD_PRIO_INHERIT],
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ax_cv_PTHREAD_PRIO_INHERIT, [
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AC_LINK_IFELSE([
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AC_LANG_PROGRAM([[#include <pthread.h>]], [[int i = PTHREAD_PRIO_INHERIT;]])],
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[ax_cv_PTHREAD_PRIO_INHERIT], [
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AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include <pthread.h>]],
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[[int i = PTHREAD_PRIO_INHERIT;]])],
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[ax_cv_PTHREAD_PRIO_INHERIT=yes],
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[ax_cv_PTHREAD_PRIO_INHERIT=no])
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])
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AS_IF([test "x$ax_cv_PTHREAD_PRIO_INHERIT" = "xyes"],
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AC_DEFINE([HAVE_PTHREAD_PRIO_INHERIT], 1, [Have PTHREAD_PRIO_INHERIT.]))
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[AC_DEFINE([HAVE_PTHREAD_PRIO_INHERIT], [1], [Have PTHREAD_PRIO_INHERIT.])])
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LIBS="$save_LIBS"
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CFLAGS="$save_CFLAGS"
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# More AIX lossage: must compile with xlc_r or cc_r
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if test x"$GCC" != xyes; then
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AC_CHECK_PROGS(PTHREAD_CC, xlc_r cc_r, ${CC})
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else
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PTHREAD_CC=$CC
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# More AIX lossage: compile with *_r variant
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if test "x$GCC" != xyes; then
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case $host_os in
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aix*)
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AS_CASE(["x/$CC"],
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[x*/c89|x*/c89_128|x*/c99|x*/c99_128|x*/cc|x*/cc128|x*/xlc|x*/xlc_v6|x*/xlc128|x*/xlc128_v6],
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[#handle absolute path differently from PATH based program lookup
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AS_CASE(["x$CC"],
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[x/*],
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[AS_IF([AS_EXECUTABLE_P([${CC}_r])],[PTHREAD_CC="${CC}_r"])],
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[AC_CHECK_PROGS([PTHREAD_CC],[${CC}_r],[$CC])])])
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;;
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esac
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fi
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else
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PTHREAD_CC="$CC"
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fi
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AC_SUBST(PTHREAD_LIBS)
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AC_SUBST(PTHREAD_CFLAGS)
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AC_SUBST(PTHREAD_CC)
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test -n "$PTHREAD_CC" || PTHREAD_CC="$CC"
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AC_SUBST([PTHREAD_LIBS])
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AC_SUBST([PTHREAD_CFLAGS])
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AC_SUBST([PTHREAD_CC])
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# Finally, execute ACTION-IF-FOUND/ACTION-IF-NOT-FOUND:
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if test x"$ax_pthread_ok" = xyes; then
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ifelse([$1],,AC_DEFINE(HAVE_PTHREAD,1,[Define if you have POSIX threads libraries and header files.]),[$1])
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ifelse([$1],,[AC_DEFINE([HAVE_PTHREAD],[1],[Define if you have POSIX threads libraries and header files.])],[$1])
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:
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else
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ax_pthread_ok=no
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