-Wempty-rule: diagnose empty rules without %empty

[bison.git] / tests / atlocal.in

diff --git a/tests/atlocal.in b/tests/atlocal.in
index e350d137b23905cb445e4db3653c2028ca8034a9..3a9f873b24f6e4372ecd618a0d7b4aa1a45e0d1c 100644 (file)
--- a/tests/atlocal.in
+++ b/tests/atlocal.in
@@ -1,7 +1,7 @@
 # @configure_input@                                     -*- shell-script -*-
 # Configurable variable values for Bison test suite.
 
-# Copyright (C) 2000-2012 Free Software Foundation, Inc.
+# Copyright (C) 2000-2013 Free Software Foundation, Inc.
 #
 # This program is free software: you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by
@@ -19,6 +19,15 @@
 # We need `config.h'.
 CPPFLAGS="-I$abs_top_builddir/lib @CPPFLAGS@"
 
+# Don't just check if $POSIXLY_CORRECT is set, as Bash, when launched
+# as /bin/sh, sets the shell variable POSIXLY_CORRECT to y, but not
+# the environment variable.
+if env | grep '^POSIXLY_CORRECT=' >/dev/null; then
+  POSIXLY_CORRECT_IS_EXPORTED=true
+else
+  POSIXLY_CORRECT_IS_EXPORTED=false
+fi
+
 ## ------------------- ##
 ## C/C++ Compilation.  ##
 ## ------------------- ##
@@ -41,12 +50,24 @@ CXXFLAGS="$NO_WERROR_CXXFLAGS @WERROR_CXXFLAGS@"
 # If 'exit 77'; skip all C++ tests; otherwise ':'.
 BISON_CXX_WORKS='@BISON_CXX_WORKS@'
 
+# Whether the compiler supports POSIXLY_CORRECT defined.
+: ${C_COMPILER_POSIXLY_CORRECT='@C_COMPILER_POSIXLY_CORRECT@'}
+: ${CXX_COMPILER_POSIXLY_CORRECT='@CXX_COMPILER_POSIXLY_CORRECT@'}
+
+if $POSIXLY_CORRECT_IS_EXPORTED; then
+  $C_COMPILER_POSIXLY_CORRECT ||
+    BISON_C_WORKS="as_fn_error 77 POSIXLY_CORRECT"
+  $CXX_COMPILER_POSIXLY_CORRECT ||
+    BISON_CXX_WORKS="as_fn_error 77 POSIXLY_CORRECT"
+fi
+
 # Handle --compile-c-with-cxx here, once CXX and CXXFLAGS are known.
 if "$at_arg_compile_c_with_cxx"; then
   CC_IS_CXX=1
   CC=$CXX
   NO_WERROR_CFLAGS=$NO_WERROR_CXXFLAGS
   CFLAGS=$CXXFLAGS
+  BISON_C_WORKS=$BISON_CXX_WORKS
 else
   CC_IS_CXX=0
 fi
@@ -79,9 +100,12 @@ LIBS="$abs_top_builddir/lib/libbison.a @LIBS@ @INTLLIBS@"
 # Empty if no xsltproc was found
 : ${XSLTPROC='@XSLTPROC@'}
 
-
-# Handle --compile-c-with-cxx here, once CXX and CXXFLAGS are known.
-if "$at_arg_compile_c_with_cxx"; then
-  CC=$CXX
-  CFLAGS=$CXXFLAGS
+# Don't just check if $POSIXLY_CORRECT is set, as Bash, when launched
+# as /bin/sh, sets the shell variable POSIXLY_CORRECT to y, but not
+# the environment variable.
+: ${C_COMPILER_POSIXLY_CORRECT='@C_COMPILER_POSIXLY_CORRECT@'}
+if env | grep '^POSIXLY_CORRECT=' >/dev/null; then
+  POSIXLY_CORRECT_IS_EXPORTED=true
+else
+  POSIXLY_CORRECT_IS_EXPORTED=false
 fi