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guile/m4/secure_getenv.m4
Mark H Weaver f9d4a040b4 Import 'lstat' and 'mkstemp' modules from Gnulib.
* lib/mkstemp.c:
* lib/secure_getenv.c:
* lib/tempname.c:
* lib/tempname.h:
* m4/mkstemp.m4:
* m4/secure_getenv.m4:
* m4/tempname.m4: New files.

* lib/Makefile.am:
* m4/gnulib-cache.m4:
* m4/gnulib-comp.m4: Add modules.
2014-02-12 20:53:21 -05:00

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# Look up an environment variable more securely.
dnl Copyright 2013-2014 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_SECURE_GETENV],
[
dnl Persuade glibc <stdlib.h> to declare secure_getenv().
AC_REQUIRE([AC_USE_SYSTEM_EXTENSIONS])
AC_REQUIRE([gl_STDLIB_H_DEFAULTS])
AC_CHECK_FUNCS_ONCE([secure_getenv])
if test $ac_cv_func_secure_getenv = no; then
HAVE_SECURE_GETENV=0
fi
])
# Prerequisites of lib/secure_getenv.c.
AC_DEFUN([gl_PREREQ_SECURE_GETENV], [
AC_CHECK_FUNCS([__secure_getenv])
if test $ac_cv_func___secure_getenv = no; then
AC_CHECK_FUNCS([issetugid])
fi
])