relocatable-lib-lgpl: Add support for mingw builds on Cygwin hosts.

Reported by Michele Locati <michele@locati.it> in
<https://lists.gnu.org/archive/html/bug-gettext/2024-09/msg00033.html>.

* m4/relocatable-lib.m4 (gl_RELOCATABLE_LIBRARY_BODY): Use
gl_BUILD_TO_HOST on the value of INSTALLPREFIX.
* modules/relocatable-lib (Files): Add m4/build-to-host.m4.
* modules/relocatable-lib-lgpl (Files): Likewise.
* modules/relocatable-prog-wrapper (Files): Likewise.

ChangeLog

@@ -1,3 +1,14 @@
+2024-09-25  Bruno Haible  <bruno@clisp.org>
+
+	relocatable-lib-lgpl: Add support for mingw builds on Cygwin hosts.
+	Reported by Michele Locati <michele@locati.it> in
+	<https://lists.gnu.org/archive/html/bug-gettext/2024-09/msg00033.html>.
+	* m4/relocatable-lib.m4 (gl_RELOCATABLE_LIBRARY_BODY): Use
+	gl_BUILD_TO_HOST on the value of INSTALLPREFIX.
+	* modules/relocatable-lib (Files): Add m4/build-to-host.m4.
+	* modules/relocatable-lib-lgpl (Files): Likewise.
+	* modules/relocatable-prog-wrapper (Files): Likewise.
+
 2024-09-25  Bruno Haible  <bruno@clisp.org>
 
 	build-to-host.m4: Add some convenience macros.

m4/relocatable-lib.m4

@@ -1,5 +1,5 @@
 # relocatable-lib.m4
-# serial 7
+# serial 8
 dnl Copyright (C) 2003, 2005-2007, 2009-2024 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
@@ -21,7 +21,9 @@ AC_DEFUN([gl_RELOCATABLE_LIBRARY_BODY],
   else
     reloc_final_prefix="$prefix"
   fi
-  AC_DEFINE_UNQUOTED([INSTALLPREFIX], ["${reloc_final_prefix}"],
+  dnl Define reloc_final_prefix_c and reloc_final_prefix_c_make.
+  gl_BUILD_TO_HOST([reloc_final_prefix])
+  AC_DEFINE_UNQUOTED([INSTALLPREFIX], [${reloc_final_prefix_c}],
     [Define to the value of ${prefix}, as a string.])
   if test $RELOCATABLE = yes; then
     AC_DEFINE([ENABLE_RELOCATABLE], [1],

modules/relocatable-lib

@@ -8,6 +8,7 @@ lib/relocatable.h
 lib/relocatable.c
 lib/relocatable.valgrind
 m4/relocatable-lib.m4
+m4/build-to-host.m4
 
 Depends-on:
 xalloc

modules/relocatable-lib-lgpl

@@ -8,6 +8,7 @@ lib/relocatable.h
 lib/relocatable.c
 lib/relocatable.valgrind
 m4/relocatable-lib.m4
+m4/build-to-host.m4
 
 Depends-on:
 strdup

modules/relocatable-prog-wrapper

@@ -47,6 +47,7 @@ m4/rawmemchr.m4
 m4/readlink.m4
 m4/realloc.m4
 m4/relocatable-lib.m4
+m4/build-to-host.m4
 m4/setenv.m4
 
 Depends-on: