mirror of
https://git.savannah.gnu.org/git/emacs.git
synced 2024-11-26 07:33:47 +00:00
27 lines
852 B
Plaintext
27 lines
852 B
Plaintext
# Look up an environment variable more securely.
|
|
dnl Copyright 2013-2017 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
|
|
AC_CHECK_FUNCS_ONCE([getuid geteuid getgid getegid])
|
|
])
|