mirror of https://github.com/MidnightCommander/mc
58 lines
2.0 KiB
Plaintext
58 lines
2.0 KiB
Plaintext
# gnulib-common.m4
|
|
# serial 101
|
|
dnl Copyright (C) 2007-2024 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_PREREQ([2.62])
|
|
|
|
|
|
# gl_CONDITIONAL(conditional, condition)
|
|
# is like AM_CONDITIONAL(conditional, condition), except that it does not
|
|
# produce an error
|
|
# configure: error: conditional "..." was never defined.
|
|
# Usually this means the macro was only invoked conditionally.
|
|
# when only invoked conditionally. Instead, in that case, both the _TRUE
|
|
# and the _FALSE case are disabled.
|
|
AC_DEFUN([gl_CONDITIONAL],
|
|
[
|
|
pushdef([AC_CONFIG_COMMANDS_PRE], [:])dnl
|
|
AM_CONDITIONAL([$1], [$2])
|
|
popdef([AC_CONFIG_COMMANDS_PRE])dnl
|
|
if test -z "${[$1]_TRUE}" && test -z "${[$1]_FALSE}"; then
|
|
[$1]_TRUE='#'
|
|
[$1]_FALSE='#'
|
|
fi
|
|
])
|
|
|
|
dnl gl_CONDITIONAL_HEADER([foo.h])
|
|
dnl takes a shell variable GL_GENERATE_FOO_H (with value true or false) as input
|
|
dnl and produces
|
|
dnl - an AC_SUBSTed variable FOO_H that is either a file name or empty, based
|
|
dnl on whether GL_GENERATE_FOO_H is true or false,
|
|
dnl - an Automake conditional GL_GENERATE_FOO_H that evaluates to the value of
|
|
dnl the shell variable GL_GENERATE_FOO_H.
|
|
AC_DEFUN([gl_CONDITIONAL_HEADER],
|
|
[
|
|
m4_pushdef([gl_header_name], AS_TR_SH(m4_toupper($1)))
|
|
m4_pushdef([gl_generate_var], [GL_GENERATE_]AS_TR_SH(m4_toupper($1)))
|
|
m4_pushdef([gl_generate_cond], [GL_GENERATE_]AS_TR_SH(m4_toupper($1)))
|
|
case "$gl_generate_var" in
|
|
false) gl_header_name='' ;;
|
|
true)
|
|
dnl It is OK to use a .h file in lib/ from within tests/, but not vice
|
|
dnl versa.
|
|
if test -z "$gl_header_name"; then
|
|
gl_header_name="${gl_source_base_prefix}$1"
|
|
fi
|
|
;;
|
|
*) echo "*** gl_generate_var is not set correctly" 1>&2; exit 1 ;;
|
|
esac
|
|
AC_SUBST(gl_header_name)
|
|
gl_CONDITIONAL(gl_generate_cond, [$gl_generate_var])
|
|
m4_popdef([gl_generate_cond])
|
|
m4_popdef([gl_generate_var])
|
|
m4_popdef([gl_header_name])
|
|
])
|