meson: add test-libsystemd-sym, fix linking of libsystemd

This is quite messy. I think libtool might have been using something
like -Wl,--whole-archive, but I don't think meson has support for that.
For now, just recompile all the sources for linking into libsystemd
directly. This should not matter much for efficiency, since it's a
few small files.

1 files changed, 23 insertions, 0 deletions

diff --git a/src/test/generate-sym-test.py b/src/test/generate-sym-test.py
new file mode 100755
index 0000000000..a3350c8a81
--- /dev/null
+++ b/src/test/generate-sym-test.py
@@ -0,0 +1,23 @@
+#!/usr/bin/python3
+import sys, re
+
+print('#include <stdio.h>')
+for header in sys.argv[2:]:
+    print('#include "{}"'.format(header.split('/')[-1]))
+
+print('''
+void* functions[] = {''')
+
+for line in open(sys.argv[1]):
+    match = re.search('^ +([a-zA-Z0-9_]+);', line)
+    if match:
+        print('    {},'.format(match.group(1)))
+
+print('''};
+
+int main(void) {
+    unsigned i;
+    for (i = 0; i < sizeof(functions)/sizeof(void*); i++)
+         printf("%p\\n", functions[i]);
+    return 0;
+}''')