X-Git-Url: http://git.onelab.eu/?a=blobdiff_plain;f=m4%2Fopenvswitch.m4;h=012901f9f42354be15a29f49c120afd3812625f5;hb=04cf4fc0d4a70bf75ac646f18c654cf019e96ef4;hp=59cc933be8bff7af18b8133c20a2cfe97f366750;hpb=5ca1ba484bd9ade5116a49cf241cb98219d7d696;p=sliver-openvswitch.git diff --git a/m4/openvswitch.m4 b/m4/openvswitch.m4 index 59cc933be..012901f9f 100644 --- a/m4/openvswitch.m4 +++ b/m4/openvswitch.m4 @@ -1,6 +1,6 @@ # -*- autoconf -*- -# Copyright (c) 2008, 2009, 2010, 2011, 2012 Nicira, Inc. +# Copyright (c) 2008, 2009, 2010, 2011, 2012, 2013 Nicira, Inc. # # Licensed under the Apache License, Version 2.0 (the "License"); # you may not use this file except in compliance with the License. @@ -46,22 +46,6 @@ AC_DEFUN([OVS_CHECK_NDEBUG], [ndebug=false]) AM_CONDITIONAL([NDEBUG], [test x$ndebug = xtrue])]) -dnl Checks for --enable-cache-time and defines CACHE_TIME if it is specified. -AC_DEFUN([OVS_CHECK_CACHE_TIME], - [AC_ARG_ENABLE( - [cache-time], - [AC_HELP_STRING([--enable-cache-time], - [Override time caching default (for testing only)])], - [case "${enableval}" in - (yes) cache_time=1;; - (no) cache_time=0;; - (*) AC_MSG_ERROR([bad value ${enableval} for --enable-cache-time]) ;; - esac - AC_DEFINE_UNQUOTED([CACHE_TIME], [$cache_time], - [Define to 1 to enable time caching, to 0 to disable time caching, or - leave undefined to use the default (as one should - ordinarily do).])])]) - dnl Checks for ESX. AC_DEFUN([OVS_CHECK_ESX], [AC_CHECK_HEADER([vmware.h], @@ -99,8 +83,7 @@ AC_DEFUN([OVS_CHECK_OPENSSL], [ssl=check]) if test "$ssl" != false; then - m4_ifndef([PKG_CHECK_MODULES], [m4_fatal([Please install pkg-config.])]) - PKG_CHECK_MODULES([SSL], [openssl], + AX_CHECK_OPENSSL( [HAVE_OPENSSL=yes], [HAVE_OPENSSL=no if test "$ssl" = check; then @@ -168,10 +151,11 @@ AC_DEFUN([OVS_CHECK_DBDIR], [DBDIR='${sysconfdir}/${PACKAGE}']) AC_SUBST([DBDIR])]) -dnl Defines HAVE_BACKTRACE if backtrace() is declared in -dnl and exists in libc. +dnl Defines HAVE_BACKTRACE if backtrace() is found. AC_DEFUN([OVS_CHECK_BACKTRACE], - [AC_CHECK_HEADER([execinfo.h], [AC_CHECK_FUNCS([backtrace])])]) + [AC_SEARCH_LIBS([backtrace], [execinfo ubacktrace], + [AC_DEFINE([HAVE_BACKTRACE], [1], + [Define to 1 if you have backtrace(3).])])]) dnl Checks for __malloc_hook, etc., supported by glibc. AC_DEFUN([OVS_CHECK_MALLOC_HOOKS], @@ -302,6 +286,18 @@ AC_DEFUN([OVS_CHECK_OVSDBMONITOR], AC_MSG_RESULT([$BUILD_OVSDBMONITOR]) AM_CONDITIONAL([BUILD_OVSDBMONITOR], [test $BUILD_OVSDBMONITOR = yes])]) +dnl Checks for missing python modules at build time +AC_DEFUN([OVS_CHECK_PYTHON_COMPAT], + [OVS_CHECK_PYTHON_MODULE([uuid]) + if test $ovs_cv_py_uuid = yes; then + INCLUDE_PYTHON_COMPAT=no + else + INCLUDE_PYTHON_COMPAT=yes + fi + AC_MSG_CHECKING([whether to add python/compat to PYTHONPATH]) + AC_MSG_RESULT([$INCLUDE_PYTHON_COMPAT]) + AM_CONDITIONAL([INCLUDE_PYTHON_COMPAT], [test $INCLUDE_PYTHON_COMPAT = yes])]) + # OVS_LINK2_IFELSE(SOURCE1, SOURCE2, [ACTION-IF-TRUE], [ACTION-IF-FALSE]) # ------------------------------------------------------------- # Based on AC_LINK_IFELSE, but tries to link both SOURCE1 and SOURCE2 @@ -390,3 +386,136 @@ AC_DEFUN([OVS_CHECK_GROFF], ovs_cv_groff=no fi]) AM_CONDITIONAL([HAVE_GROFF], [test "$ovs_cv_groff" = yes])]) + +dnl Checks for thread-local storage support. +dnl +dnl Checks whether the compiler and linker support the C11 +dnl thread_local macro from , and if so defines +dnl HAVE_THREAD_LOCAL. If not, checks whether the compiler and linker +dnl support the GCC __thread extension, and if so defines +dnl HAVE___THREAD. +AC_DEFUN([OVS_CHECK_TLS], + [AC_CACHE_CHECK( + [whether $CC has that supports thread_local], + [ovs_cv_thread_local], + [AC_LINK_IFELSE( + [AC_LANG_PROGRAM([#include +static thread_local int var;], [return var;])], + [ovs_cv_thread_local=yes], + [ovs_cv_thread_local=no])]) + if test $ovs_cv_thread_local = yes; then + AC_DEFINE([HAVE_THREAD_LOCAL], [1], + [Define to 1 if the C compiler and linker supports the C11 + thread_local matcro defined in .]) + else + AC_CACHE_CHECK( + [whether $CC supports __thread], + [ovs_cv___thread], + [AC_LINK_IFELSE( + [AC_LANG_PROGRAM([static __thread int var;], [return var;])], + [ovs_cv___thread=yes], + [ovs_cv___thread=no])]) + if test $ovs_cv___thread = yes; then + AC_DEFINE([HAVE___THREAD], [1], + [Define to 1 if the C compiler and linker supports the + GCC __thread extenions.]) + fi + fi]) + +dnl OVS_CHECK_GCC4_ATOMICS +dnl +dnl Checks whether the compiler and linker support GCC 4.0+ atomic built-ins. +dnl A compile-time only check is not enough because the compiler defers +dnl unimplemented built-ins to libgcc, which sometimes also lacks +dnl implementations. +AC_DEFUN([OVS_CHECK_GCC4_ATOMICS], + [AC_CACHE_CHECK( + [whether $CC supports GCC 4.0+ atomic built-ins], + [ovs_cv_gcc4_atomics], + [AC_LINK_IFELSE( + [AC_LANG_PROGRAM([[#include + +#define ovs_assert(expr) if (!(expr)) abort(); +#define TEST_ATOMIC_TYPE(TYPE) \ + { \ + TYPE x = 1; \ + TYPE orig; \ + \ + __sync_synchronize(); \ + ovs_assert(x == 1); \ + \ + __sync_synchronize(); \ + x = 3; \ + __sync_synchronize(); \ + ovs_assert(x == 3); \ + \ + orig = __sync_fetch_and_add(&x, 1); \ + ovs_assert(orig == 3); \ + __sync_synchronize(); \ + ovs_assert(x == 4); \ + \ + orig = __sync_fetch_and_sub(&x, 2); \ + ovs_assert(orig == 4); \ + __sync_synchronize(); \ + ovs_assert(x == 2); \ + \ + orig = __sync_fetch_and_or(&x, 6); \ + ovs_assert(orig == 2); \ + __sync_synchronize(); \ + ovs_assert(x == 6); \ + \ + orig = __sync_fetch_and_and(&x, 10); \ + ovs_assert(orig == 6); \ + __sync_synchronize(); \ + ovs_assert(x == 2); \ + \ + orig = __sync_fetch_and_xor(&x, 10); \ + ovs_assert(orig == 2); \ + __sync_synchronize(); \ + ovs_assert(x == 8); \ + }]], [dnl +TEST_ATOMIC_TYPE(char); +TEST_ATOMIC_TYPE(unsigned char); +TEST_ATOMIC_TYPE(signed char); +TEST_ATOMIC_TYPE(short); +TEST_ATOMIC_TYPE(unsigned short); +TEST_ATOMIC_TYPE(int); +TEST_ATOMIC_TYPE(unsigned int); +TEST_ATOMIC_TYPE(long int); +TEST_ATOMIC_TYPE(unsigned long int); +TEST_ATOMIC_TYPE(long long int); +TEST_ATOMIC_TYPE(unsigned long long int); +])], + [ovs_cv_gcc4_atomics=yes], + [ovs_cv_gcc4_atomics=no])]) + if test $ovs_cv_gcc4_atomics = yes; then + AC_DEFINE([HAVE_GCC4_ATOMICS], [1], + [Define to 1 if the C compiler and linker supports the GCC 4.0+ + atomic built-ins.]) + fi]) + +dnl OVS_CHECK_ATOMIC_ALWAYS_LOCK_FREE(SIZE) +dnl +dnl Checks __atomic_always_lock_free(SIZE, 0) +AC_DEFUN([OVS_CHECK_ATOMIC_ALWAYS_LOCK_FREE], + [AC_CACHE_CHECK( + [value of __atomic_always_lock_free($1)], + [ovs_cv_atomic_always_lock_free_$1], + [AC_COMPUTE_INT( + [ovs_cv_atomic_always_lock_free_$1], + [__atomic_always_lock_free($1, 0)], + [], + [ovs_cv_atomic_always_lock_free_$1=unsupported])]) + if test ovs_cv_atomic_always_lock_free_$1 != unsupported; then + AC_DEFINE_UNQUOTED( + [ATOMIC_ALWAYS_LOCK_FREE_$1B], + [$ovs_cv_atomic_always_lock_free_$1], + [If the C compiler is GCC 4.7 or later, define to the return value of + __atomic_always_lock_free($1, 0). If the C compiler is not GCC or is + an older version of GCC, the value does not matter.]) + fi]) + +dnl OVS_CHECK_POSIX_AIO +AC_DEFUN([OVS_CHECK_POSIX_AIO], + [AC_SEARCH_LIBS([aio_write], [rt]) + AM_CONDITIONAL([HAVE_POSIX_AIO], [test "$ac_cv_search_aio_write" != no])])