summaryrefslogtreecommitdiff
path: root/gnulib-m4/build-to-host.m4
diff options
context:
space:
mode:
Diffstat (limited to 'gnulib-m4/build-to-host.m4')
-rw-r--r--gnulib-m4/build-to-host.m4273
1 files changed, 273 insertions, 0 deletions
diff --git a/gnulib-m4/build-to-host.m4 b/gnulib-m4/build-to-host.m4
new file mode 100644
index 00000000..c416bca3
--- /dev/null
+++ b/gnulib-m4/build-to-host.m4
@@ -0,0 +1,273 @@
+# build-to-host.m4
+# serial 5
+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
+])
+
+
+dnl The following macros are convenience invocations of gl_BUILD_TO_HOST
+dnl for some of the variables that are defined by Autoconf.
+dnl To do so for _all_ the possible variables, use the module 'configmake'.
+
+dnl Defines bindir_c and bindir_c_make.
+AC_DEFUN_ONCE([gl_BUILD_TO_HOST_BINDIR],
+[
+ dnl Find the final value of bindir.
+ gl_saved_prefix="${prefix}"
+ gl_saved_exec_prefix="${exec_prefix}"
+ gl_saved_bindir="${bindir}"
+ dnl Unfortunately, prefix and exec_prefix get only finally determined
+ dnl at the end of configure.
+ if test "X$prefix" = "XNONE"; then
+ prefix="$ac_default_prefix"
+ fi
+ if test "X$exec_prefix" = "XNONE"; then
+ exec_prefix='${prefix}'
+ fi
+ eval exec_prefix="$exec_prefix"
+ eval bindir="$bindir"
+ gl_BUILD_TO_HOST([bindir])
+ bindir="${gl_saved_bindir}"
+ exec_prefix="${gl_saved_exec_prefix}"
+ prefix="${gl_saved_prefix}"
+])
+
+dnl Defines datadir_c and datadir_c_make,
+dnl where datadir = $(datarootdir)
+AC_DEFUN_ONCE([gl_BUILD_TO_HOST_DATADIR],
+[
+ dnl Find the final value of datadir.
+ gl_saved_prefix="${prefix}"
+ gl_saved_datarootdir="${datarootdir}"
+ gl_saved_datadir="${datadir}"
+ dnl Unfortunately, prefix gets only finally determined at the end of
+ dnl configure.
+ if test "X$prefix" = "XNONE"; then
+ prefix="$ac_default_prefix"
+ fi
+ eval datarootdir="$datarootdir"
+ eval datadir="$datadir"
+ gl_BUILD_TO_HOST([datadir])
+ datadir="${gl_saved_datadir}"
+ datarootdir="${gl_saved_datarootdir}"
+ prefix="${gl_saved_prefix}"
+])
+
+dnl Defines libdir_c and libdir_c_make.
+AC_DEFUN_ONCE([gl_BUILD_TO_HOST_LIBDIR],
+[
+ dnl Find the final value of libdir.
+ gl_saved_prefix="${prefix}"
+ gl_saved_exec_prefix="${exec_prefix}"
+ gl_saved_libdir="${libdir}"
+ dnl Unfortunately, prefix and exec_prefix get only finally determined
+ dnl at the end of configure.
+ if test "X$prefix" = "XNONE"; then
+ prefix="$ac_default_prefix"
+ fi
+ if test "X$exec_prefix" = "XNONE"; then
+ exec_prefix='${prefix}'
+ fi
+ eval exec_prefix="$exec_prefix"
+ eval libdir="$libdir"
+ gl_BUILD_TO_HOST([libdir])
+ libdir="${gl_saved_libdir}"
+ exec_prefix="${gl_saved_exec_prefix}"
+ prefix="${gl_saved_prefix}"
+])
+
+dnl Defines libexecdir_c and libexecdir_c_make.
+AC_DEFUN_ONCE([gl_BUILD_TO_HOST_LIBEXECDIR],
+[
+ dnl Find the final value of libexecdir.
+ gl_saved_prefix="${prefix}"
+ gl_saved_exec_prefix="${exec_prefix}"
+ gl_saved_libexecdir="${libexecdir}"
+ dnl Unfortunately, prefix and exec_prefix get only finally determined
+ dnl at the end of configure.
+ if test "X$prefix" = "XNONE"; then
+ prefix="$ac_default_prefix"
+ fi
+ if test "X$exec_prefix" = "XNONE"; then
+ exec_prefix='${prefix}'
+ fi
+ eval exec_prefix="$exec_prefix"
+ eval libexecdir="$libexecdir"
+ gl_BUILD_TO_HOST([libexecdir])
+ libexecdir="${gl_saved_libexecdir}"
+ exec_prefix="${gl_saved_exec_prefix}"
+ prefix="${gl_saved_prefix}"
+])
+
+dnl Defines localedir_c and localedir_c_make.
+AC_DEFUN_ONCE([gl_BUILD_TO_HOST_LOCALEDIR],
+[
+ dnl Find the final value of localedir.
+ gl_saved_prefix="${prefix}"
+ gl_saved_datarootdir="${datarootdir}"
+ gl_saved_localedir="${localedir}"
+ dnl Unfortunately, prefix gets only finally determined at the end of
+ dnl configure.
+ if test "X$prefix" = "XNONE"; then
+ prefix="$ac_default_prefix"
+ fi
+ eval datarootdir="$datarootdir"
+ eval localedir="$localedir"
+ gl_BUILD_TO_HOST([localedir])
+ localedir="${gl_saved_localedir}"
+ datarootdir="${gl_saved_datarootdir}"
+ prefix="${gl_saved_prefix}"
+])
+
+dnl Defines pkgdatadir_c and pkgdatadir_c_make,
+dnl where pkgdatadir = $(datadir)/$(PACKAGE)
+AC_DEFUN_ONCE([gl_BUILD_TO_HOST_PKGDATADIR],
+[
+ dnl Find the final value of pkgdatadir.
+ gl_saved_prefix="${prefix}"
+ gl_saved_datarootdir="${datarootdir}"
+ gl_saved_datadir="${datadir}"
+ gl_saved_pkgdatadir="${pkgdatadir}"
+ dnl Unfortunately, prefix gets only finally determined at the end of
+ dnl configure.
+ if test "X$prefix" = "XNONE"; then
+ prefix="$ac_default_prefix"
+ fi
+ eval datarootdir="$datarootdir"
+ eval datadir="$datadir"
+ eval pkgdatadir="$pkgdatadir"
+ gl_BUILD_TO_HOST([pkgdatadir])
+ pkgdatadir="${gl_saved_pkgdatadir}"
+ datadir="${gl_saved_datadir}"
+ datarootdir="${gl_saved_datarootdir}"
+ prefix="${gl_saved_prefix}"
+])
+
+dnl Defines pkglibdir_c and pkglibdir_c_make,
+dnl where pkglibdir = $(libdir)/$(PACKAGE)
+AC_DEFUN_ONCE([gl_BUILD_TO_HOST_PKGLIBDIR],
+[
+ dnl Find the final value of pkglibdir.
+ gl_saved_prefix="${prefix}"
+ gl_saved_exec_prefix="${exec_prefix}"
+ gl_saved_libdir="${libdir}"
+ gl_saved_pkglibdir="${pkglibdir}"
+ dnl Unfortunately, prefix and exec_prefix get only finally determined
+ dnl at the end of configure.
+ if test "X$prefix" = "XNONE"; then
+ prefix="$ac_default_prefix"
+ fi
+ if test "X$exec_prefix" = "XNONE"; then
+ exec_prefix='${prefix}'
+ fi
+ eval exec_prefix="$exec_prefix"
+ eval libdir="$libdir"
+ eval pkglibdir="$pkglibdir"
+ gl_BUILD_TO_HOST([pkglibdir])
+ pkglibdir="${gl_saved_pkglibdir}"
+ libdir="${gl_saved_libdir}"
+ exec_prefix="${gl_saved_exec_prefix}"
+ prefix="${gl_saved_prefix}"
+])
+
+dnl Defines pkglibexecdir_c and pkglibexecdir_c_make,
+dnl where pkglibexecdir = $(libexecdir)/$(PACKAGE)
+AC_DEFUN_ONCE([gl_BUILD_TO_HOST_PKGLIBEXECDIR],
+[
+ dnl Find the final value of pkglibexecdir.
+ gl_saved_prefix="${prefix}"
+ gl_saved_exec_prefix="${exec_prefix}"
+ gl_saved_libexecdir="${libexecdir}"
+ gl_saved_pkglibexecdir="${pkglibexecdir}"
+ dnl Unfortunately, prefix and exec_prefix get only finally determined
+ dnl at the end of configure.
+ if test "X$prefix" = "XNONE"; then
+ prefix="$ac_default_prefix"
+ fi
+ if test "X$exec_prefix" = "XNONE"; then
+ exec_prefix='${prefix}'
+ fi
+ eval exec_prefix="$exec_prefix"
+ eval libexecdir="$libexecdir"
+ eval pkglibexecdir="$pkglibexecdir"
+ gl_BUILD_TO_HOST([pkglibexecdir])
+ pkglibexecdir="${gl_saved_pkglibexecdir}"
+ libexecdir="${gl_saved_libexecdir}"
+ exec_prefix="${gl_saved_exec_prefix}"
+ prefix="${gl_saved_prefix}"
+])
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-15 02:35:35 +0000