fix: separate builddir from outdir

meson.build

@@ -102,6 +102,7 @@ unpacked_objects = custom_target(
         'x',
         '@INPUT@'
     ],
+    install: false,
 )
 
 patched_relocations = custom_target(
@@ -109,17 +110,20 @@ patched_relocations = custom_target(
     input: unpacked_objects,
     output: patched_object_files,
     command: [
-        python, meson.project_source_root() / 'scripts/patch_relocations.py',
-        meson.current_build_dir(),
-        '@INPUT@',
+        python,
+        meson.project_source_root() / 'scripts' / 'patch_relocations.py',
+        meson.global_build_root(),  # Where ar extracted the .obj files
+        '@OUTDIR@',                  # Where patched .o files should go
+        '@INPUT@',                   # The extracted .obj files
     ],
+    install: false,
 )
 
 shiggy_dep = declare_dependency(
     link_with: static_library(
         'shiggy',
         meson.project_source_root() / 'src' / 'shims.c',
-        include_directories : include_directories('include'),
+        include_directories: include_directories('include'),
         objects: patched_relocations,
     )
-)
+)

scripts/patch_relocations.py

@@ -1,9 +1,10 @@
 import sys, struct, shutil, os
 
-def patch_relocs(build_dir, object_files):
+def patch_relocs(build_dir, out_dir, object_files):
     patched = 0
     for f in object_files:
-        outfile = os.path.join(build_dir, os.path.basename(f).replace('.obj', '.o'))
+        f = os.path.join(build_dir, os.path.basename(f))
+        outfile = os.path.join(out_dir, os.path.basename(f).replace('.obj', '.o'))
         shutil.copy(f, outfile)
         
         with open(outfile, 'rb+') as file:
@@ -36,6 +37,7 @@ def patch_relocs(build_dir, object_files):
 
 if __name__ == '__main__':
     build_dir = sys.argv[1]
-    object_files = sys.argv[2:]
+    out_dir = sys.argv[2]
+    object_files = sys.argv[3:]
 
-    patch_relocs(build_dir, object_files)
+    patch_relocs(build_dir, out_dir, object_files)