diff options
Diffstat (limited to 'm4/dirent_h.m4')
| -rw-r--r-- | m4/dirent_h.m4 | 45 |
1 files changed, 30 insertions, 15 deletions
diff --git a/m4/dirent_h.m4 b/m4/dirent_h.m4 index 6d861425855..17e2a20c5d4 100644 --- a/m4/dirent_h.m4 +++ b/m4/dirent_h.m4 @@ -1,4 +1,4 @@ -# dirent_h.m4 serial 16 +# dirent_h.m4 serial 19 dnl Copyright (C) 2008-2021 Free Software Foundation, Inc. dnl This file is free software; the Free Software Foundation dnl gives unlimited permission to copy and/or distribute it, @@ -6,10 +6,10 @@ dnl with or without modifications, as long as this notice is preserved. dnl Written by Bruno Haible. -AC_DEFUN([gl_DIRENT_H], +AC_DEFUN_ONCE([gl_DIRENT_H], [ - dnl Use AC_REQUIRE here, so that the default behavior below is expanded - dnl once only, before all statements that occur in other macros. + dnl Ensure to expand the default settings once only, before all statements + dnl that occur in other macros. AC_REQUIRE([gl_DIRENT_H_DEFAULTS]) dnl <dirent.h> is always overridden, because of GNULIB_POSIXCHECK. @@ -27,26 +27,41 @@ AC_DEFUN([gl_DIRENT_H], ]], [alphasort closedir dirfd fdopendir opendir readdir rewinddir scandir]) ]) +# gl_DIRENT_MODULE_INDICATOR([modulename]) +# sets the shell variable that indicates the presence of the given module +# to a C preprocessor expression that will evaluate to 1. +# This macro invocation must not occur in macros that are AC_REQUIREd. AC_DEFUN([gl_DIRENT_MODULE_INDICATOR], [ - dnl Use AC_REQUIRE here, so that the default settings are expanded once only. - AC_REQUIRE([gl_DIRENT_H_DEFAULTS]) + dnl Ensure to expand the default settings once only. + gl_DIRENT_H_REQUIRE_DEFAULTS gl_MODULE_INDICATOR_SET_VARIABLE([$1]) dnl Define it also as a C macro, for the benefit of the unit tests. gl_MODULE_INDICATOR_FOR_TESTS([$1]) ]) +# Initializes the default values for AC_SUBSTed shell variables. +# This macro must not be AC_REQUIREd. It must only be invoked, and only +# outside of macros or in macros that are not AC_REQUIREd. +AC_DEFUN([gl_DIRENT_H_REQUIRE_DEFAULTS], +[ + m4_defun(GL_MODULE_INDICATOR_PREFIX[_DIRENT_H_MODULE_INDICATOR_DEFAULTS], [ + gl_UNISTD_H_REQUIRE_DEFAULTS dnl for REPLACE_FCHDIR + gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_OPENDIR]) + gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_READDIR]) + gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_REWINDDIR]) + gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_CLOSEDIR]) + gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_DIRFD]) + gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_FDOPENDIR]) + gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_SCANDIR]) + gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_ALPHASORT]) + ]) + m4_require(GL_MODULE_INDICATOR_PREFIX[_DIRENT_H_MODULE_INDICATOR_DEFAULTS]) + AC_REQUIRE([gl_DIRENT_H_DEFAULTS]) +]) + AC_DEFUN([gl_DIRENT_H_DEFAULTS], [ - AC_REQUIRE([gl_UNISTD_H_DEFAULTS]) dnl for REPLACE_FCHDIR - GNULIB_OPENDIR=0; AC_SUBST([GNULIB_OPENDIR]) - GNULIB_READDIR=0; AC_SUBST([GNULIB_READDIR]) - GNULIB_REWINDDIR=0; AC_SUBST([GNULIB_REWINDDIR]) - GNULIB_CLOSEDIR=0; AC_SUBST([GNULIB_CLOSEDIR]) - GNULIB_DIRFD=0; AC_SUBST([GNULIB_DIRFD]) - GNULIB_FDOPENDIR=0; AC_SUBST([GNULIB_FDOPENDIR]) - GNULIB_SCANDIR=0; AC_SUBST([GNULIB_SCANDIR]) - GNULIB_ALPHASORT=0; AC_SUBST([GNULIB_ALPHASORT]) dnl Assume proper GNU behavior unless another module says otherwise. HAVE_OPENDIR=1; AC_SUBST([HAVE_OPENDIR]) HAVE_READDIR=1; AC_SUBST([HAVE_READDIR]) |