diff options
| -rw-r--r-- | configure.ac | 89 |
1 files changed, 74 insertions, 15 deletions
diff --git a/configure.ac b/configure.ac index 6fe4bfe73..4e728bca3 100644 --- a/configure.ac +++ b/configure.ac @@ -127,6 +127,27 @@ if test -z "$lib"; then lib=lib fi +AC_ARG_ENABLE([pthreads], + [AS_HELP_STRING([--enable-pthreads=FLAGS], + [FLAGS is the value to pass to the compiler to enable POSIX Threads.] + [The default if FLAGS is not specified is to try first -pthread] + [and then -lpthread.] + [--without-pthreads will disable threading.])], +[ +if test "x$enableval" = "xyes"; then + AC_MSG_NOTICE([Will try -pthread then -lpthread to enable POSIX Threads]) +elif test "x$enableval" != "xno"; then + PTHREAD_CFLAGS=$enableval + AC_MSG_NOTICE([Setting '$PTHREAD_CFLAGS' as the FLAGS to enable POSIX Threads]) +else + AC_MSG_NOTICE([POSIX Threads will be disabled.]) + NO_PTHREADS=YesPlease + USER_NOPTHREAD=1 +fi], +[ + AC_MSG_NOTICE([Will try -pthread then -lpthread to enable POSIX Threads.]) +]) + ## Site configuration (override autodetection) ## --with-PACKAGE[=ARG] and --without-PACKAGE AC_MSG_NOTICE([CHECKS for site configuration]) @@ -672,23 +693,61 @@ AC_SUBST(NO_MKDTEMP) # # Define PTHREAD_LIBS to the linker flag used for Pthread support and define # THREADED_DELTA_SEARCH if Pthreads are available. -AC_LANG_CONFTEST([AC_LANG_PROGRAM( - [[#include <pthread.h>]], - [[pthread_mutex_t test_mutex;]] -)]) -${CC} -pthread conftest.c -o conftest.o > /dev/null 2>&1 -if test $? -eq 0;then - PTHREAD_LIBS="-pthread" - THREADED_DELTA_SEARCH=YesPlease +AC_DEFUN([PTHREADTEST_SRC], [ +#include <pthread.h> + +int main(void) +{ + pthread_mutex_t test_mutex; + return (0); +} +]) + +dnl AC_LANG_CONFTEST([AC_LANG_PROGRAM( +dnl [[#include <pthread.h>]], +dnl [[pthread_mutex_t test_mutex;]] +dnl )]) + +NO_PTHREADS=UnfortunatelyYes +THREADED_DELTA_SEARCH= +PTHREAD_LIBS= + +if test -n "$USER_NOPTHREAD"; then + AC_MSG_NOTICE([Skipping POSIX Threads at user request.]) +# handle these separately since PTHREAD_CFLAGS could be '-lpthreads +# -D_REENTRANT' or some such. +elif test -z "$PTHREAD_CFLAGS"; then + for opt in -pthread -lpthread; do + old_CFLAGS="$CFLAGS" + CFLAGS="$opt $CFLAGS" + AC_MSG_CHECKING([Checking for POSIX Threads with '$opt']) + AC_LINK_IFELSE(PTHREADTEST_SRC, + [AC_MSG_RESULT([yes]) + NO_PTHREADS= + PTHREAD_LIBS="$opt" + THREADED_DELTA_SEARCH=YesPlease + break + ], + [AC_MSG_RESULT([no])]) + CFLAGS="$old_CFLAGS" + done else - ${CC} -lpthread conftest.c -o conftest.o > /dev/null 2>&1 - if test $? -eq 0;then - PTHREAD_LIBS="-lpthread" - THREADED_DELTA_SEARCH=YesPlease - else - NO_PTHREADS=UnfortunatelyYes - fi + old_CFLAGS="$CFLAGS" + CFLAGS="$PTHREAD_CFLAGS $CFLAGS" + AC_MSG_CHECKING([Checking for POSIX Threads with '$PTHREAD_CFLAGS']) + AC_LINK_IFELSE(PTHREADTEST_SRC, + [AC_MSG_RESULT([yes]) + NO_PTHREADS= + PTHREAD_LIBS="$PTHREAD_CFLAGS" + THREADED_DELTA_SEARCH=YesPlease + ], + [AC_MSG_RESULT([no])]) + + CFLAGS="$old_CFLAGS" fi + +CFLAGS="$old_CFLAGS" + AC_SUBST(PTHREAD_LIBS) AC_SUBST(NO_PTHREADS) AC_SUBST(THREADED_DELTA_SEARCH) |