New modules nproc, pthread.

[gnulib.git] / m4 / pthread.m4

diff --git a/m4/pthread.m4 b/m4/pthread.m4
new file mode 100644 (file)
index 0000000..2a38307
--- /dev/null
+++ b/m4/pthread.m4
@@ -0,0 +1,27 @@
+# pthread.m4
+dnl Copyright (C) 2009 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+AC_DEFUN([gl_PTHREAD_CHECK],
+  [AC_CHECK_HEADERS_ONCE([pthread.h])
+
+   LIB_PTHREAD=
+   PTHREAD_H=
+   if test "$ac_cv_header_pthread_h" = yes; then
+     gl_saved_libs=$LIBS
+     AC_SEARCH_LIBS([pthread_create], [pthread],
+       [if test "$ac_cv_search_pthread_create" != "none required"; then
+         LIB_PTHREAD="$ac_cv_search_pthread_create"
+       fi])
+     LIBS="$gl_saved_libs"
+   else
+     PTHREAD_H='pthread.h'
+   fi
+
+   AC_SUBST([LIB_PTHREAD])
+   AC_SUBST([PTHREAD_H])
+
+   AC_REQUIRE([AC_C_RESTRICT])
+])