--- omr/CMakeLists.txt.orig	2021-01-27 17:12:14 UTC
+++ omr/CMakeLists.txt
@@ -48,7 +48,7 @@ if (NOT MSVC)
    set_target_properties (
       omr
       PROPERTIES
-         COMPILE_FLAGS "${PCH_INCLUDE} -g -Wall -Wextra -Winvalid-pch -Wno-unused-private-field"
+         COMPILE_FLAGS "-include ${PROJECT_BINARY_DIR}/all.h -Wall -Wextra -Winvalid-pch -Wno-unused-private-field"
       )
 else (NOT MSVC)
    set_target_properties (
