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Unified Diff: bison/src/bison/2.4.1/bison-2.4.1-src/m4/setenv.m4

Issue 10807020: Add native Windows binary for bison. (Closed) Base URL: svn://chrome-svn/chrome/trunk/deps/third_party/
Patch Set: Created 8 years, 5 months ago
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Index: bison/src/bison/2.4.1/bison-2.4.1-src/m4/setenv.m4
===================================================================
--- bison/src/bison/2.4.1/bison-2.4.1-src/m4/setenv.m4 (revision 0)
+++ bison/src/bison/2.4.1/bison-2.4.1-src/m4/setenv.m4 (revision 0)
@@ -0,0 +1,71 @@
+# setenv.m4 serial 10
+dnl Copyright (C) 2001-2004, 2006-2008 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_FUNC_SETENV],
+[
+ AC_REQUIRE([gl_STDLIB_H_DEFAULTS])
+ AC_CHECK_FUNCS_ONCE([setenv])
+ if test $ac_cv_func_setenv = no; then
+ HAVE_SETENV=0
+ AC_LIBOBJ([setenv])
+ gl_PREREQ_SETENV
+ fi
+])
+
+# Like gl_FUNC_SETENV, except prepare for separate compilation (no AC_LIBOBJ).
+AC_DEFUN([gl_FUNC_SETENV_SEPARATE],
+[
+ AC_REQUIRE([gl_STDLIB_H_DEFAULTS])
+ AC_CHECK_FUNCS_ONCE([setenv])
+ if test $ac_cv_func_setenv = no; then
+ HAVE_SETENV=0
+ fi
+ gl_PREREQ_SETENV
+])
+
+AC_DEFUN([gl_FUNC_UNSETENV],
+[
+ AC_REQUIRE([gl_STDLIB_H_DEFAULTS])
+ AC_CHECK_FUNCS([unsetenv])
+ if test $ac_cv_func_unsetenv = no; then
+ HAVE_UNSETENV=0
+ AC_LIBOBJ([unsetenv])
+ gl_PREREQ_UNSETENV
+ else
+ AC_CACHE_CHECK([for unsetenv() return type], gt_cv_func_unsetenv_ret,
+ [AC_TRY_COMPILE([#include <stdlib.h>
+extern
+#ifdef __cplusplus
+"C"
+#endif
+#if defined(__STDC__) || defined(__cplusplus)
+int unsetenv (const char *name);
+#else
+int unsetenv();
+#endif
+], , gt_cv_func_unsetenv_ret='int', gt_cv_func_unsetenv_ret='void')])
+ if test $gt_cv_func_unsetenv_ret = 'void'; then
+ VOID_UNSETENV=1
+ fi
+ fi
+])
+
+# Prerequisites of lib/setenv.c.
+AC_DEFUN([gl_PREREQ_SETENV],
+[
+ AC_REQUIRE([AC_FUNC_ALLOCA])
+ AC_REQUIRE([gl_ENVIRON])
+ AC_CHECK_HEADERS_ONCE(unistd.h)
+ AC_CHECK_HEADERS(search.h)
+ AC_CHECK_FUNCS(tsearch)
+])
+
+# Prerequisites of lib/unsetenv.c.
+AC_DEFUN([gl_PREREQ_UNSETENV],
+[
+ AC_REQUIRE([gl_ENVIRON])
+ AC_CHECK_HEADERS_ONCE(unistd.h)
+])
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