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[patch #8847] AX_PTHREAD: improve support for Solaris
From: |
Alan Coopersmith |
Subject: |
[patch #8847] AX_PTHREAD: improve support for Solaris |
Date: |
Sun, 10 Jan 2016 04:33:44 +0000 |
User-agent: |
Mozilla/5.0 (X11; SunOS i86pc; rv:31.0) Gecko/20100101 Firefox/31.0 |
URL:
<http://savannah.gnu.org/patch/?8847>
Summary: AX_PTHREAD: improve support for Solaris
Project: GNU Autoconf Archive
Submitted by: alanc
Submitted on: Sun 10 Jan 2016 04:33:43 AM GMT
Priority: 5 - Normal
Status: None
Assigned to: None
Originator Email:
Open/Closed: Open
Discussion Lock: Any
_______________________________________________________
Details:
This patch improves the selection of flags for gcc & Sun cc on
Solaris, dropping those no longer needed on modern versions,
while preserving support for older versions that still need them.
It also modifies the fix for http://savannah.gnu.org/patch/?7666
to use the existing compiler tests - previously that wasn't
effective because -lpthread was tested before -mt so it never
got to the -mt test - now it tests -mt & -lpthread in unison
so we add -mt only for compilers that support it, not for all
which aren't gcc (hence removing the need for the "What about
clang?" comment).
To test, I wrote a quick stub configure.ac:
AC_INIT(test, 0.1)
AM_INIT_AUTOMAKE([foreign])
AX_PTHREAD()
AC_MSG_NOTICE([host_os: ${host_os}])
AC_MSG_NOTICE([PTHREAD_CC: ${PTHREAD_CC}])
AC_MSG_NOTICE([PTHREAD_CFLAGS: ${PTHREAD_CFLAGS}])
AC_MSG_NOTICE([PTHREAD_LIBS: ${PTHREAD_LIBS}])
AC_OUTPUT
Output on various machines using Studio cc:
configure: host_os: solaris2.12
configure: PTHREAD_CC: cc
configure: PTHREAD_CFLAGS:
configure: PTHREAD_LIBS:
configure: host_os: solaris2.11
configure: PTHREAD_CC: cc
configure: PTHREAD_CFLAGS: -D_REENTRANT -D_POSIX_PTHREAD_SEMANTICS
configure: PTHREAD_LIBS:
configure: host_os: solaris2.10
configure: PTHREAD_CC: cc
configure: PTHREAD_CFLAGS: -D_REENTRANT -D_POSIX_PTHREAD_SEMANTICS
configure: PTHREAD_LIBS:
configure: host_os: solaris2.9
configure: PTHREAD_CC: cc
configure: PTHREAD_CFLAGS: -D_REENTRANT -D_POSIX_PTHREAD_SEMANTICS -mt
configure: PTHREAD_LIBS: -lpthread
And using gcc:
configure: host_os: solaris2.12
configure: PTHREAD_CC: gcc
configure: PTHREAD_CFLAGS:
configure: PTHREAD_LIBS:
configure: host_os: solaris2.11
configure: PTHREAD_CC: gcc
configure: PTHREAD_CFLAGS: -D_REENTRANT -D_POSIX_PTHREAD_SEMANTICS
configure: PTHREAD_LIBS:
configure: host_os: solaris2.10
configure: PTHREAD_CC: gcc
configure: PTHREAD_CFLAGS: -D_REENTRANT -D_POSIX_PTHREAD_SEMANTICS
configure: PTHREAD_LIBS:
[I couldn't find a working pre-S10 machine with gcc to test on.]
And for comparison, prior to this fix:
configure: host_os: solaris2.12
configure: PTHREAD_CC: cc
configure: PTHREAD_CFLAGS: -mt -D_REENTRANT
configure: PTHREAD_LIBS: -lpthread
configure: host_os: solaris2.12
configure: PTHREAD_CC: gcc
configure: PTHREAD_CFLAGS: -D_REENTRANT -pthreads
configure: PTHREAD_LIBS:
I've confirmed with the Solaris libc/threads, linker, and compiler teams that
these are the correct flags for these OS'es.
_______________________________________________________
File Attachments:
-------------------------------------------------------
Date: Sun 10 Jan 2016 04:33:43 AM GMT Name:
0001-AX_PTHREAD-improve-support-for-Solaris.patch Size: 5kB By: alanc
<http://savannah.gnu.org/patch/download.php?file_id=35959>
_______________________________________________________
Reply to this item at:
<http://savannah.gnu.org/patch/?8847>
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