diff options
Diffstat (limited to 'gnulib-m4/warn-on-use.m4')
| -rw-r--r-- | gnulib-m4/warn-on-use.m4 | 48 |
1 files changed, 25 insertions, 23 deletions
diff --git a/gnulib-m4/warn-on-use.m4 b/gnulib-m4/warn-on-use.m4 index e9c48bb5..d43355ab 100644 --- a/gnulib-m4/warn-on-use.m4 +++ b/gnulib-m4/warn-on-use.m4 @@ -1,11 +1,13 @@ -# warn-on-use.m4 serial 5 -dnl Copyright (C) 2010-2018 Free Software Foundation, Inc. +# warn-on-use.m4 serial 9 +dnl Copyright (C) 2010-2022 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. # gl_WARN_ON_USE_PREPARE(INCLUDES, NAMES) # --------------------------------------- +# If the module 'posixcheck' is in use: +# # For each whitespace-separated element in the list of NAMES, define # HAVE_RAW_DECL_name if the function has a declaration among INCLUDES # even after being undefined as a macro. @@ -23,25 +25,25 @@ dnl with or without modifications, as long as this notice is preserved. # needing gl_WARN_ON_USE_PREPARE. AC_DEFUN([gl_WARN_ON_USE_PREPARE], [ - m4_foreach_w([gl_decl], [$2], - [AH_TEMPLATE([HAVE_RAW_DECL_]AS_TR_CPP(m4_defn([gl_decl])), - [Define to 1 if ]m4_defn([gl_decl])[ is declared even after - undefining macros.])])dnl -dnl FIXME: gl_Symbol must be used unquoted until we can assume -dnl autoconf 2.64 or newer. - for gl_func in m4_flatten([$2]); do - AS_VAR_PUSHDEF([gl_Symbol], [gl_cv_have_raw_decl_$gl_func])dnl - AC_CACHE_CHECK([whether $gl_func is declared without a macro], - gl_Symbol, - [AC_COMPILE_IFELSE([AC_LANG_PROGRAM([$1], -[@%:@undef $gl_func - (void) $gl_func;])], - [AS_VAR_SET(gl_Symbol, [yes])], [AS_VAR_SET(gl_Symbol, [no])])]) - AS_VAR_IF(gl_Symbol, [yes], - [AC_DEFINE_UNQUOTED(AS_TR_CPP([HAVE_RAW_DECL_$gl_func]), [1]) - dnl shortcut - if the raw declaration exists, then set a cache - dnl variable to allow skipping any later AC_CHECK_DECL efforts - eval ac_cv_have_decl_$gl_func=yes]) - AS_VAR_POPDEF([gl_Symbol])dnl - done + m4_ifdef([gl_POSIXCHECK], + [m4_foreach_w([gl_decl], [$2], + [AH_TEMPLATE([HAVE_RAW_DECL_]AS_TR_CPP(m4_defn([gl_decl])), + [Define to 1 if ]m4_defn([gl_decl])[ is declared even after + undefining macros.])])dnl + for gl_func in m4_flatten([$2]); do + AS_VAR_PUSHDEF([gl_Symbol], [gl_cv_have_raw_decl_$gl_func])dnl + AC_CACHE_CHECK([whether $gl_func is declared without a macro], + [gl_Symbol], + [AC_COMPILE_IFELSE([AC_LANG_PROGRAM([$1], +[[#undef $gl_func + (void) $gl_func;]])], + [AS_VAR_SET([gl_Symbol], [yes])], [AS_VAR_SET([gl_Symbol], [no])])]) + AS_VAR_IF([gl_Symbol], [yes], + [AC_DEFINE_UNQUOTED(AS_TR_CPP([HAVE_RAW_DECL_$gl_func]), [1]) + dnl shortcut - if the raw declaration exists, then set a cache + dnl variable to allow skipping any later AC_CHECK_DECL efforts + eval ac_cv_have_decl_$gl_func=yes]) + AS_VAR_POPDEF([gl_Symbol])dnl + done + ]) ]) |