Can now build object files in generators, too.

backends.py

@@ -224,7 +224,9 @@ class Backend():
         unity_deps = [] # Generated sources that must be built before compiling a Unity target.
         for genlist in target.get_generated_sources():
             for src in genlist.get_outfilelist():
-                if not self.environment.is_header(src):
+                if self.environment.is_object(src):
+                    obj_list.append(os.path.join(self.get_target_dir(target), target.get_basename() + '.dir', src))
+                elif not self.environment.is_header(src):
                     if is_unity:
                         if '/' in src:
                             rel_src = src

environment.py

@@ -1068,6 +1068,7 @@ header_suffixes = ['h', 'hh', 'hpp', 'hxx', 'H']
 cpp_suffixes = ['cc', 'cpp', 'cxx', 'h', 'hh', 'hpp', 'hxx', 'c++']
 c_suffixes = ['c']
 clike_suffixes = c_suffixes + cpp_suffixes
+obj_suffixes = ['o', 'obj']
 
 def is_header(fname):
     suffix = fname.split('.')[-1]
@@ -1077,6 +1078,10 @@ def is_source(fname):
     suffix = fname.split('.')[-1]
     return suffix in clike_suffixes
 
+def is_object(fname):
+    suffix = fname.split('.')[-1]
+    return suffix in obj_suffixes
+
 class Environment():
     private_dir = 'meson-private'
     log_dir = 'meson-logs'
@@ -1158,10 +1163,13 @@ class Environment():
 
     def is_header(self, fname):
         return is_header(fname)
-    
+
     def is_source(self, fname):
         return is_source(fname)
 
+    def is_object(self, fname):
+        return is_object(fname)
+
     def merge_options(self, options):
         for (name, value) in options.items():
             if name not in self.coredata.user_options:

test cases/common/59 object generator/meson.build

@@ -0,0 +1,18 @@
+project('object generator', 'c')
+
+python = find_program('python3')
+
+# Note that this will not add a dependency to the compiler executable.
+# Code will not be rebuilt if it changes.
+comp = '@0@/@1@'.format(meson.current_source_dir(), 'obj_generator.py')
+
+# Generate a header file that needs to be included.
+gen = generator(python,
+ output : '@BASENAME@.o',
+ arguments : [comp, '@INPUT@', '@OUTPUT@'])
+
+generated = gen.process('source.c')
+
+e = executable('prog', 'prog.c', generated)
+
+test('objgen', e)

test cases/common/59 object generator/obj_generator.py

@@ -0,0 +1,18 @@
+#!/usr/bin/python3
+
+# Mimic a binary that generates an object file (e.g. windres).
+
+import sys, shutil, subprocess
+
+if __name__ == '__main__':
+    if len(sys.argv) != 3:
+        print(sys.argv[0], 'input_file output_file')
+        sys.exit(1)
+    ifile = sys.argv[1]
+    ofile = sys.argv[2]
+    if shutil.which('cl'):
+        cmd = ['cl', '/nologo', '/Fo'+ofile, '/c', ifile]
+    else:
+        cmd = ['cc', '-c', ifile, '-o', ofile]
+    sys.exit(subprocess.call(cmd))
+

test cases/common/59 object generator/prog.c

@@ -0,0 +1,5 @@
+int func_in_obj();
+
+int main(int argc, char **argv) {
+    return func_in_obj();
+}

test cases/common/59 object generator/source.c

@@ -0,0 +1,3 @@
+int func_in_obj() {
+    return 0;
+}