build: next attempt to fix build race condition

the source should be used in the dependency. However, only the generated
header source, not the .c files or we will get duplicated sources.

This is another attempt to fix the build OSX travis failure

Reviewed-by: Stefan Schmidt <stefan@datenfreihafen.org>
Differential Revision: https://phab.enlightenment.org/D7896

src/modules/evas/engines/software_generic/meson.build

@@ -9,6 +9,7 @@ engine_src = files([
   'evas_ector_software.h',
 ])
 
+gen_src = []
 
 pub_eo_files = [
   'evas_ector_software_buffer.eo'
@@ -17,7 +18,7 @@ pub_eo_files = [
 subdir('filters')
 
 foreach eo_file : pub_eo_files
-  engine_src += custom_target('eolian_gen_' + eo_file,
+  gen_src += custom_target('eolian_gen_' + eo_file,
     input : eo_file,
     output : [eo_file + '.h'],
     depfile : eo_file + '.d',
@@ -28,6 +29,8 @@ foreach eo_file : pub_eo_files
                            '-gchd', '@INPUT@'])
 endforeach
 
+engine_src += gen_src
+
 engine_deps = [draw, dl]
 
 if get_option('evas-modules') == 'shared' and not evas_force_static.contains(engine)

src/modules/evas/meson.build

@@ -70,7 +70,8 @@ foreach engine_conf : engines
       if engine == 'software_generic'
         software_generic = declare_dependency(
           include_directories: engine_include_dir,
-          source : engine_src,
+          sources : gen_src,
+          dependencies : [eina, evas_pre] + engine_deps,
           link_with : tmp
         )
       endif