It should equivalent to setting %C%_foo_SHORTNAME=foo, except it can
work if
the makefile fragment is conditionally included, which improves the
modularity
of Automake-using projects.
Example:
without object-shortname
root/path/to/Makefile.am:
bin_PROGRAMS += foo
%C%_foo_CFLAGS = $(CFLAGS)
results in objects:
root/path/to/root_path_to_foo-foo.o
with object-shortname the object filename is:
root/path/to/foo-foo.o
And it allows the following in root/Makefile.am (not possible with
foo_SHORTNAME=foo)
if ENABLE_FOO
include path/too/Makefile.am
endif
* bin/automake.in: Handle new object-shortname option
* lib/Automake/Options.pm: Add the option
---
bin/automake.in | 13 +++++++++++++
lib/Automake/Options.pm | 1 +
2 files changed, 14 insertions(+)
diff --git a/bin/automake.in b/bin/automake.in
index eedc8bc..cea04c6 100644
--- a/bin/automake.in
+++ b/bin/automake.in
@@ -1691,6 +1691,19 @@ sub handle_single_transform
# override.
my $dname = $derived;
+ if (option 'object-shortname') {
+ # If object-shortname is enabled the object's filename
shall not contain the parts
+ # derived from its path (e.g. if %C% is used), but just
the name of the object's target
+ # e.g. instead of path_to_binary-object.o just binary-object
+ my $dirname = dirname ($_file);
+ if ($dirname ne ".") {
+ my $canon_dirname = canonicalize ($dirname) . "_";
+ # paranoid check: should never fail but ensure path
prefix is part of the filename
+ if (index ($derived, $canon_dirname) == 0) {
+ $dname = substr ($derived, length ($canon_dirname));
+ }
+ }
+ }
my $var = var ($derived . '_SHORTNAME');
if ($var)
{
diff --git a/lib/Automake/Options.pm b/lib/Automake/Options.pm
index 7d782c3..819c5ff 100644
--- a/lib/Automake/Options.pm
+++ b/lib/Automake/Options.pm
@@ -293,6 +293,7 @@ sub _is_valid_easy_option ($)
silent-rules
std-options
subdir-objects
+ object-shortname
);
}