diff options
Diffstat (limited to 'm4/sys_time_h.m4')
| -rw-r--r-- | m4/sys_time_h.m4 | 34 |
1 files changed, 22 insertions, 12 deletions
diff --git a/m4/sys_time_h.m4 b/m4/sys_time_h.m4 index 64f133d5133..c425a9639a1 100644 --- a/m4/sys_time_h.m4 +++ b/m4/sys_time_h.m4 @@ -1,5 +1,5 @@ # Configure a replacement for <sys/time.h>. -# serial 9 +# serial 12 # Copyright (C) 2007, 2009-2021 Free Software Foundation, Inc. # This file is free software; the Free Software Foundation @@ -8,18 +8,13 @@ # Written by Paul Eggert and Martin Lambers. -AC_DEFUN([gl_HEADER_SYS_TIME_H], +AC_DEFUN_ONCE([gl_SYS_TIME_H], [ dnl Use AC_REQUIRE here, so that the REPLACE_GETTIMEOFDAY=0 statement dnl below is expanded once only, before all REPLACE_GETTIMEOFDAY=1 dnl statements that occur in other macros. - AC_REQUIRE([gl_HEADER_SYS_TIME_H_BODY]) -]) - -AC_DEFUN([gl_HEADER_SYS_TIME_H_BODY], -[ + AC_REQUIRE([gl_SYS_TIME_H_DEFAULTS]) AC_REQUIRE([AC_C_RESTRICT]) - AC_REQUIRE([gl_HEADER_SYS_TIME_H_DEFAULTS]) AC_CHECK_HEADERS_ONCE([sys/time.h]) gl_CHECK_NEXT_HEADERS([sys/time.h]) @@ -89,18 +84,33 @@ AC_DEFUN([gl_HEADER_SYS_TIME_H_BODY], ]], [gettimeofday]) ]) +# gl_SYS_TIME_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_SYS_TIME_MODULE_INDICATOR], [ - dnl Use AC_REQUIRE here, so that the default settings are expanded once only. - AC_REQUIRE([gl_HEADER_SYS_TIME_H_DEFAULTS]) + dnl Ensure to expand the default settings once only. + gl_SYS_TIME_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]) ]) -AC_DEFUN([gl_HEADER_SYS_TIME_H_DEFAULTS], +# 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_SYS_TIME_H_REQUIRE_DEFAULTS], +[ + m4_defun(GL_MODULE_INDICATOR_PREFIX[_SYS_TIME_H_MODULE_INDICATOR_DEFAULTS], [ + gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_GETTIMEOFDAY]) + ]) + m4_require(GL_MODULE_INDICATOR_PREFIX[_SYS_TIME_H_MODULE_INDICATOR_DEFAULTS]) + AC_REQUIRE([gl_SYS_TIME_H_DEFAULTS]) +]) + +AC_DEFUN([gl_SYS_TIME_H_DEFAULTS], [ - GNULIB_GETTIMEOFDAY=0; AC_SUBST([GNULIB_GETTIMEOFDAY]) dnl Assume POSIX behavior unless another module says otherwise. HAVE_GETTIMEOFDAY=1; AC_SUBST([HAVE_GETTIMEOFDAY]) HAVE_STRUCT_TIMEVAL=1; AC_SUBST([HAVE_STRUCT_TIMEVAL]) |