diff options
Diffstat (limited to 'm4/euidaccess.m4')
-rw-r--r-- | m4/euidaccess.m4 | 47 |
1 files changed, 47 insertions, 0 deletions
diff --git a/m4/euidaccess.m4 b/m4/euidaccess.m4 new file mode 100644 index 0000000..9edb4b3 --- /dev/null +++ b/m4/euidaccess.m4 @@ -0,0 +1,47 @@ +# euidaccess.m4 serial 7 +dnl Copyright (C) 2002-2006 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_NONREENTRANT_EUIDACCESS], +[ + AC_REQUIRE([gl_FUNC_EUIDACCESS]) + AC_DEFINE([PREFER_NONREENTRANT_EUIDACCESS], 1, + [Define this if you prefer euidaccess to return the correct result + even if this would make it nonreentrant. Define this only if your + entire application is safe even if the uid or gid might temporarily + change. If your application uses signal handlers or threads it + is probably not safe.]) +]) + +AC_DEFUN([gl_FUNC_EUIDACCESS], +[ + dnl Persuade glibc <unistd.h> to declare euidaccess(). + AC_REQUIRE([AC_GNU_SOURCE]) + + AC_CHECK_DECLS_ONCE([euidaccess]) + AC_REPLACE_FUNCS(euidaccess) + if test $ac_cv_func_euidaccess = no; then + gl_PREREQ_EUIDACCESS + fi +]) + +# Prerequisites of lib/euidaccess.c. +AC_DEFUN([gl_PREREQ_EUIDACCESS], [ + AC_CHECK_HEADERS_ONCE(libgen.h) + AC_CHECK_DECLS_ONCE(setregid) + AC_REQUIRE([AC_FUNC_GETGROUPS]) + + # Solaris 9 needs -lgen to get the eaccess function. + # Save and restore LIBS so -lgen isn't added to it. Otherwise, *all* + # programs in the package would end up linked with that potentially-shared + # library, inducing unnecessary run-time overhead. + gl_saved_libs=$LIBS + AC_SEARCH_LIBS(eaccess, [gen], + [test "$ac_cv_search_eaccess" = "none required" || + LIB_EACCESS=$ac_cv_search_eaccess]) + AC_SUBST([LIB_EACCESS]) + AC_CHECK_FUNCS(eaccess) + LIBS=$gl_saved_libs +]) |