From ca136c04d4ac60e3febc8ea2b9c4d4736365a424 Mon Sep 17 00:00:00 2001
From: Lee Chee Yang <chee.yang.lee@intel.com>
Date: Wed, 2 Sep 2020 08:28:35 +0800
Subject: [PATCH] Improve Reproducibility for src package

Improve reproducibility for intel-graphics-compiler-src package.
needs to pass build path as environment variable to the build.
this only works on bison 3.7 onward, hence check for bison version
before adding the flags.
Upstream-Status: Inappropriate [applying --file-prefix-map in such way does not work for upstream]
Signed-off-by: Lee Chee Yang <chee.yang.lee@intel.com>
---
 visa/CMakeLists.txt | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

Index: git/visa/CMakeLists.txt
===================================================================
--- git.orig/visa/CMakeLists.txt
+++ git/visa/CMakeLists.txt
@@ -135,8 +135,11 @@ endif()
 set(bison_output_file ${CMAKE_CURRENT_BINARY_DIR}/CISA.tab.cpp)
 set(flex_output_file ${CMAKE_CURRENT_BINARY_DIR}/lex.CISA.cpp)
 
-BISON_TARGET(CISAParser CISA.y ${bison_output_file} COMPILE_FLAGS "-vt -p CISA")
-FLEX_TARGET(CISAScanner CISA.l ${flex_output_file} COMPILE_FLAGS "-PCISA ${WIN_FLEX_FLAG}")
+if(BISON_VERSION VERSION_GREATER_EQUAL "3.7.0")
+    set(BISON_EXTRA_FLAGS " --file-prefix-map=$ENV{B}=/igc/ ")
+endif()
+BISON_TARGET(CISAParser CISA.y ${bison_output_file} COMPILE_FLAGS "-l -vt -p CISA ${BISON_EXTRA_FLAGS} ")
+FLEX_TARGET(CISAScanner CISA.l ${flex_output_file} COMPILE_FLAGS "-PCISA -L ${WIN_FLEX_FLAG} ")
 ADD_FLEX_BISON_DEPENDENCY(CISAScanner CISAParser)
 set(CISAScanner_dependencies)
 
