diff options
Diffstat (limited to 'libgomp/configure.ac')
| -rw-r--r-- | libgomp/configure.ac | 50 |
1 files changed, 2 insertions, 48 deletions
diff --git a/libgomp/configure.ac b/libgomp/configure.ac index 68a18e17561..0cda749d593 100644 --- a/libgomp/configure.ac +++ b/libgomp/configure.ac @@ -15,12 +15,6 @@ LIBGOMP_ENABLE(version-specific-runtime-libs, no, , permit yes|no) AC_MSG_RESULT($enable_version_specific_runtime_libs) -AC_MSG_CHECKING([for --enable-linux-futex]) -LIBGOMP_ENABLE(linux-futex, default, , - [Use the Linux futex system call], - permit yes|no|default) -AC_MSG_RESULT($enable_linux_futex) - # We would like our source tree to be readonly. However when releases or # pre-releases are generated, the flex/bison generated files as well as the # various formats of manuals need to be included along with the rest of the @@ -192,50 +186,10 @@ case "$host" in AC_DEFINE(HAVE_BROKEN_POSIX_SEMAPHORES, 1, Define if the POSIX Semaphores do not work on your system.) ;; - *-linux*) - case "$enable_linux_futex" in - default) - # If headers don't have gettid/futex syscalls definition, then - # default to no, otherwise there will be compile time failures. - # Otherwise, default to yes. If we don't detect we are - # compiled/linked against NPTL and not cross-compiling, check - # if programs are run by default against NPTL and if not, issue - # a warning. - enable_linux_futex=no - AC_LINK_IFELSE( - [AC_LANG_PROGRAM( - [#include <sys/syscall.h> - int lk;], - [syscall (SYS_gettid); syscall (SYS_futex, &lk, 0, 0, 0);])], - [AC_LINK_IFELSE( - [AC_LANG_PROGRAM( - [#ifndef _GNU_SOURCE - #define _GNU_SOURCE 1 - #endif - #include <pthread.h> - pthread_t th; void *status;], - [pthread_tryjoin_np (th, &status);])],[enable_linux_futex=yes], - [if test x$cross_compiling = xno; then - if getconf GNU_LIBPTHREAD_VERSION 2>/dev/null \ - | LC_ALL=C grep -i NPTL > /dev/null 2>/dev/null; then - AC_MSG_WARN([The kernel might not support futex or gettid syscalls. -If so, please configure with --disable-linux-futex]) - fi - fi - enable_linux_futex=yes])]) - ;; - yes) - AC_LINK_IFELSE( - [AC_LANG_PROGRAM( - [#include <sys/syscall.h> - int lk;], - [syscall (SYS_gettid); syscall (SYS_futex, &lk, 0, 0, 0);])],[], - [AC_MSG_ERROR([SYS_gettid and SYS_futex required for --enable-linux-futex])]) - ;; - esac - ;; esac +GCC_LINUX_FUTEX(:) + # Check for pthread_{,attr_}[sg]etaffinity_np. AC_LINK_IFELSE( [AC_LANG_PROGRAM( |