| # Look up an environment variable more securely. |
| dnl Copyright 2013-2016 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]) |
| ]) |
