Test for CPU_SET

[urcu.git] / configure.ac

diff --git a/configure.ac b/configure.ac
index 5b4322bab2c9c184b5c5e87ac12df82807382b8a..d1d605bd895b509787b20c6a37d3bde7e6518994 100644 (file)
--- a/configure.ac
+++ b/configure.ac
@@ -2,7 +2,7 @@
 # Process this file with autoconf to produce a configure script.
 
 
-AC_INIT([userspace-rcu],[0.6.7],[mathieu dot desnoyers at efficios dot com])
+AC_INIT([userspace-rcu],[0.7.6],[mathieu dot desnoyers at efficios dot com])
 
 # Following the numbering scheme proposed by libtool for the library version
 # http://www.gnu.org/software/libtool/manual/html_node/Updating-version-info.html
@@ -15,6 +15,8 @@ AC_CANONICAL_HOST
 AM_INIT_AUTOMAKE([foreign dist-bzip2 no-dist-gzip])
 m4_ifdef([AM_SILENT_RULES], [AM_SILENT_RULES([yes])])
 
+m4_include([config/ax_tls.m4])
+
 AC_CONFIG_SRCDIR([urcu.h])
 
 AC_CONFIG_HEADERS([config.h urcu/config.h])
@@ -24,6 +26,22 @@ AH_TEMPLATE([CONFIG_RCU_HAVE_FENCE], [Defined when on a system that has memory f
 AH_TEMPLATE([CONFIG_RCU_HAVE_FUTEX], [Defined when on a system with futex support.])
 AH_TEMPLATE([CONFIG_RCU_COMPAT_ARCH], [Compatibility mode for i386 which lacks cmpxchg instruction.])
 AH_TEMPLATE([CONFIG_RCU_ARM_HAVE_DMB], [Use the dmb instruction if available for use on ARM.])
+AH_TEMPLATE([CONFIG_RCU_TLS], [TLS provided by the compiler.])
+
+# Allow overriding storage used for TLS variables.
+AC_ARG_ENABLE([compiler-tls],
+       AS_HELP_STRING([--disable-compiler-tls], [Use pthread_getspecific() to emulate Thread Local Storage (TLS) variables.]),
+       [def_compiler_tls=$enableval],
+       [def_compiler_tls="yes"])
+
+# If not overridden, use ax_tls.m4 to check if TLS is available.
+AS_IF([test "x$def_compiler_tls" = "xyes"],
+       [AX_TLS([def_tls_detect=$ac_cv_tls], [:])],
+       [:])
+
+AS_IF([test "x$def_tls_detect" = "x"],
+       [:],
+       [AC_DEFINE_UNQUOTED([CONFIG_RCU_TLS], $def_tls_detect)])
 
 # Checks for programs.
 AC_PROG_CC
@@ -58,6 +76,7 @@ AS_CASE([$host_cpu],
        [alpha*], [ARCHTYPE="alpha"],
        [ia64], [ARCHTYPE="gcc"],
        [arm*], [ARCHTYPE="arm"],
+       [mips*], [ARCHTYPE="mips"],
        [ARCHTYPE="unknown"]
 )
 
@@ -196,6 +215,26 @@ AC_CHECK_FUNCS([sched_setaffinity],[
                        AC_MSG_RESULT([no])
                ])
 
+               # Confirm that we have CPU_SET, and it actually works.
+               AC_MSG_CHECKING([whether CPU_SET works])
+               AH_TEMPLATE([HAVE_CPU_SET], [Defined to 1 if we have CPU_SET and it works])
+               AC_COMPILE_IFELSE([AC_LANG_SOURCE([[
+                               #define _GNU_SOURCE
+                               #include <sched.h>
+                               int main()
+                               {
+                                       cpu_set_t foo, mask; CPU_SET (0, &foo);
+                                       return 0;
+                               }
+                       ]])
+               ],[
+                       # Works!
+                       AC_DEFINE(HAVE_CPU_SET, 1)
+                       AC_MSG_RESULT([yes])
+               ],[
+                       AC_MSG_RESULT([no])
+               ])
+
                # Check how many arguments does sched_setaffinity take.
                # Should be 3 or 2.
                AC_MSG_CHECKING([how many arguments sched_setaffinity takes])
@@ -229,6 +268,7 @@ AC_CONFIG_LINKS([
 ])
 AC_CONFIG_FILES([
        Makefile
+       doc/Makefile
        tests/Makefile
        liburcu.pc
        liburcu-bp.pc
@@ -245,3 +285,9 @@ AS_IF([test "x$def_smp_support" = "xyes"],[
 ],[
        AS_ECHO("SMP support disabled.")
 ])
+
+AS_IF([test "x$def_tls_detect" = "x"],[
+       AS_ECHO("Thread Local Storage (TLS): pthread_getspecific().")
+],[
+       AS_ECHO("Thread Local Storage (TLS): $def_tls_detect.")
+])