Expand the loadable object support.

Provide a simple API for loaded objects to interact with GNU make.  I still
won't guarantee that this API won't change but it's much closer to something
that's supported and provides easy-to-use interfaces with a public header
file.

1 files changed, 84 insertions, 0 deletions

diff --git a/tests/scripts/features/loadapi b/tests/scripts/features/loadapi
new file mode 100644
index 0000000..cecb114
--- /dev/null
+++ b/tests/scripts/features/loadapi
@@ -0,0 +1,84 @@
+#                                                                    -*-perl-*-
+$description = "Test the shared object load API.";
+
+$details = "Verify the different aspects of the shared object API.";
+
+# Don't do anything if this system doesn't support "load"
+exists $FEATURES{load} or return -1;
+
+my $sobuild = '$(CC) '.($srcdir? "-I$srcdir":'').' -g -shared -fPIC -o $@ $<';
+
+# First build a shared object
+# Provide both a default and non-default load symbol
+
+unlink(qw(testapi.c testapi.so));
+
+open(my $F, '> testapi.c') or die "open: testapi.c: $!\n";
+print $F <<'EOF' ;
+#include <string.h>
+#include <stdio.h>
+
+#include "gnumake.h"
+
+static char *
+test_eval (const char *buf)
+{
+    gmk_eval (buf, 0);
+    return NULL;
+}
+
+static char *
+test_expand (const char *val)
+{
+    return gmk_expand (val);
+}
+
+static char *
+func_test (const char *funcname, int argc, char **argv)
+{
+    if (strcmp (funcname, "test-expand") == 0)
+        return test_expand (argv[0]);
+
+    if (strcmp (funcname, "test-eval") == 0)
+        return test_eval (argv[0]);
+
+    return strdup ("unknown");
+}
+
+int
+testapi_gmk_setup ()
+{
+    gmk_add_function ("test-expand", func_test, 1, 1, 1);
+    gmk_add_function ("test-eval", func_test, 1, 1, 1);
+    return 1;
+}
+EOF
+close($F) or die "close: testapi.c: $!\n";
+
+run_make_test('testapi.so: testapi.c ; @'.$sobuild, '', '');
+
+# TEST 1
+# Check the gmk_expand() function
+run_make_test(q!
+EXPAND = expansion
+all: ; @echo $(test-expand $$(EXPAND))
+load testapi.so
+!,
+              '', "expansion\n");
+
+# TEST 2
+# Check the eval operation.  Prove that the argument is expanded only once
+run_make_test(q!
+load testapi.so
+TEST = bye
+ASSIGN = VAR = $(TEST) $(shell echo there)
+$(test-eval $(value ASSIGN))
+TEST = hi
+all:;@echo '$(VAR)'
+!,
+              '', "hi there\n");
+
+unlink(qw(testapi.c testapi.so)) unless $keep;
+
+# This tells the test driver that the perl test script executed properly.
+1;