ansi-c++-opt: Provide option --enable-c++/--disable-c++ when possible.

[gnulib.git] / m4 / spawn_h.m4

diff --git a/m4/spawn_h.m4 b/m4/spawn_h.m4
index da7582f..371d00c 100644 (file)
--- a/m4/spawn_h.m4
+++ b/m4/spawn_h.m4
@@ -1,4 +1,4 @@
-# spawn_h.m4 serial 9
+# spawn_h.m4 serial 11
 dnl Copyright (C) 2008-2010 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
@@ -33,10 +33,7 @@ AC_DEFUN([gl_SPAWN_H],
   fi
   AC_SUBST([HAVE_SPAWN_H])
 
-  AC_CHECK_FUNCS_ONCE([posix_spawn])
-  if test $ac_cv_func_posix_spawn != yes; then
-    HAVE_POSIX_SPAWN=0
-  fi
+  AC_REQUIRE([gl_HAVE_POSIX_SPAWN])
 
   AC_REQUIRE([AC_C_RESTRICT])
 
@@ -55,6 +52,20 @@ AC_DEFUN([gl_SPAWN_H],
     posix_spawn_file_actions_adddup2])
 ])
 
+dnl Checks whether the system has the functions posix_spawn.
+dnl Sets ac_cv_func_posix_spawn and HAVE_POSIX_SPAWN.
+AC_DEFUN([gl_HAVE_POSIX_SPAWN],
+[
+  dnl Use AC_REQUIRE here, so that the default behavior below is expanded
+  dnl once only, before all statements that occur in other macros.
+  AC_REQUIRE([gl_SPAWN_H_DEFAULTS])
+
+  AC_CHECK_FUNCS_ONCE([posix_spawn])
+  if test $ac_cv_func_posix_spawn != yes; then
+    HAVE_POSIX_SPAWN=0
+  fi
+])
+
 dnl Unconditionally enables the replacement of <spawn.h>.
 AC_DEFUN([gl_REPLACE_SPAWN_H],
 [
@@ -66,9 +77,9 @@ AC_DEFUN([gl_SPAWN_MODULE_INDICATOR],
 [
   dnl Use AC_REQUIRE here, so that the default settings are expanded once only.
   AC_REQUIRE([gl_SPAWN_H_DEFAULTS])
-  GNULIB_[]m4_translit([$1],[abcdefghijklmnopqrstuvwxyz./-],[ABCDEFGHIJKLMNOPQRSTUVWXYZ___])=1
+  gl_MODULE_INDICATOR_SET_VARIABLE([$1])
   dnl Define it also as a C macro, for the benefit of the unit tests.
-  gl_MODULE_INDICATOR([$1])
+  gl_MODULE_INDICATOR_FOR_TESTS([$1])
 ])
 
 AC_DEFUN([gl_SPAWN_H_DEFAULTS],