80 lines
3.2 KiB
Plaintext
80 lines
3.2 KiB
Plaintext
# build-to-host.m4 serial 3
|
|
dnl Copyright (C) 2023-2024 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.
|
|
|
|
dnl Written by Bruno Haible.
|
|
|
|
dnl When the build environment ($build_os) is different from the target runtime
|
|
dnl environment ($host_os), file names may need to be converted from the build
|
|
dnl environment syntax to the target runtime environment syntax. This is
|
|
dnl because the Makefiles are executed (mostly) by build environment tools and
|
|
dnl therefore expect file names in build environment syntax, whereas the runtime
|
|
dnl expects file names in target runtime environment syntax.
|
|
dnl
|
|
dnl For example, if $build_os = cygwin and $host_os = mingw32, filenames need
|
|
dnl be converted from Cygwin syntax to native Windows syntax:
|
|
dnl /cygdrive/c/foo/bar -> C:\foo\bar
|
|
dnl /usr/local/share -> C:\cygwin64\usr\local\share
|
|
dnl
|
|
dnl gl_BUILD_TO_HOST([somedir])
|
|
dnl This macro takes as input an AC_SUBSTed variable 'somedir', which must
|
|
dnl already have its final value assigned, and produces two additional
|
|
dnl AC_SUBSTed variables 'somedir_c' and 'somedir_c_make', that designate the
|
|
dnl same file name value, just in different syntax:
|
|
dnl - somedir_c is the file name in target runtime environment syntax,
|
|
dnl as a C string (starting and ending with a double-quote,
|
|
dnl and with escaped backslashes and double-quotes in
|
|
dnl between).
|
|
dnl - somedir_c_make is the same thing, escaped for use in a Makefile.
|
|
|
|
AC_DEFUN([gl_BUILD_TO_HOST],
|
|
[
|
|
AC_REQUIRE([AC_CANONICAL_BUILD])
|
|
AC_REQUIRE([AC_CANONICAL_HOST])
|
|
AC_REQUIRE([gl_BUILD_TO_HOST_INIT])
|
|
|
|
dnl Define somedir_c.
|
|
gl_final_[$1]="$[$1]"
|
|
dnl Translate it from build syntax to host syntax.
|
|
case "$build_os" in
|
|
cygwin*)
|
|
case "$host_os" in
|
|
mingw* | windows*)
|
|
gl_final_[$1]=`cygpath -w "$gl_final_[$1]"` ;;
|
|
esac
|
|
;;
|
|
esac
|
|
dnl Convert it to C string syntax.
|
|
[$1]_c=`printf '%s\n' "$gl_final_[$1]" | sed -e "$gl_sed_double_backslashes" -e "$gl_sed_escape_doublequotes" | tr -d "$gl_tr_cr"`
|
|
[$1]_c='"'"$[$1]_c"'"'
|
|
AC_SUBST([$1_c])
|
|
|
|
dnl Define somedir_c_make.
|
|
[$1]_c_make=`printf '%s\n' "$[$1]_c" | sed -e "$gl_sed_escape_for_make_1" -e "$gl_sed_escape_for_make_2" | tr -d "$gl_tr_cr"`
|
|
dnl Use the substituted somedir variable, when possible, so that the user
|
|
dnl may adjust somedir a posteriori when there are no special characters.
|
|
if test "$[$1]_c_make" = '\"'"${gl_final_[$1]}"'\"'; then
|
|
[$1]_c_make='\"$([$1])\"'
|
|
fi
|
|
AC_SUBST([$1_c_make])
|
|
])
|
|
|
|
dnl Some initializations for gl_BUILD_TO_HOST.
|
|
AC_DEFUN([gl_BUILD_TO_HOST_INIT],
|
|
[
|
|
gl_sed_double_backslashes='s/\\/\\\\/g'
|
|
gl_sed_escape_doublequotes='s/"/\\"/g'
|
|
changequote(,)dnl
|
|
gl_sed_escape_for_make_1="s,\\([ \"&'();<>\\\\\`|]\\),\\\\\\1,g"
|
|
changequote([,])dnl
|
|
gl_sed_escape_for_make_2='s,\$,\\$$,g'
|
|
dnl Find out how to remove carriage returns from output. Solaris /usr/ucb/tr
|
|
dnl does not understand '\r'.
|
|
case `echo r | tr -d '\r'` in
|
|
'') gl_tr_cr='\015' ;;
|
|
*) gl_tr_cr='\r' ;;
|
|
esac
|
|
])
|