error, getprogname: Stricter dependency conditions

[Bruno Haible]

A few dependency conditions can be improved a little bit:


2024-09-02  Bruno Haible  <bruno@clisp.org>

        error, getprogname: Stricter dependency conditions.
        * modules/error (Depends-on): Add dependency condition.
        * modules/getprogname (Depends-on): Make dependency condition stricter.
        (configure.ac): Require AC_CANONICAL_HOST.

diff --git a/modules/error b/modules/error
index 4d896ce913..36bf18a233 100644
--- a/modules/error
+++ b/modules/error
@@ -9,7 +9,7 @@ Depends-on:
 error-h
 stddef
 stdio
-getprogname
+getprogname     [test $COMPILE_ERROR_C = 1]
 strerror        [test $COMPILE_ERROR_C = 1]
 unistd          [test $COMPILE_ERROR_C = 1]
 msvc-nothrow    [test $COMPILE_ERROR_C = 1]
diff --git a/modules/getprogname b/modules/getprogname
index 0631589ee6..ff0b91cbe0 100644
--- a/modules/getprogname
+++ b/modules/getprogname
@@ -10,9 +10,10 @@ Depends-on:
 stdlib
 basename-lgpl   [test $HAVE_GETPROGNAME = 0]
 extensions      [test $HAVE_GETPROGNAME = 0]
-open            [test $HAVE_GETPROGNAME = 0]
+open            [test $HAVE_GETPROGNAME = 0 && case "$host_os" in irix* | osf* 
| sco* | unixware*) true;; *) false;; esac]
 
 configure.ac:
+AC_REQUIRE([AC_CANONICAL_HOST])
 gl_FUNC_GETPROGNAME
 gl_CONDITIONAL([GL_COND_OBJ_GETPROGNAME],
                [test $HAVE_GETPROGNAME = 0 || test $REPLACE_GETPROGNAME = 1])