1# Look up an environment variable more securely. 2dnl Copyright 2013-2014 Free Software Foundation, Inc. 3dnl This file is free software; the Free Software Foundation 4dnl gives unlimited permission to copy and/or distribute it, 5dnl with or without modifications, as long as this notice is preserved. 6 7AC_DEFUN([gl_FUNC_SECURE_GETENV], 8[ 9 dnl Persuade glibc <stdlib.h> to declare secure_getenv(). 10 AC_REQUIRE([AC_USE_SYSTEM_EXTENSIONS]) 11 12 AC_REQUIRE([gl_STDLIB_H_DEFAULTS]) 13 AC_CHECK_FUNCS_ONCE([secure_getenv]) 14 if test $ac_cv_func_secure_getenv = no; then 15 HAVE_SECURE_GETENV=0 16 fi 17]) 18 19# Prerequisites of lib/secure_getenv.c. 20AC_DEFUN([gl_PREREQ_SECURE_GETENV], [ 21 AC_CHECK_FUNCS([__secure_getenv]) 22 if test $ac_cv_func___secure_getenv = no; then 23 AC_CHECK_FUNCS([issetugid]) 24 fi 25]) 26