From 134bbe88ac189799c7f643cd9435a9bd053d8bec Mon Sep 17 00:00:00 2001 From: Yonghong Zhu Date: Tue, 25 Jul 2017 13:56:53 +0800 Subject: [PATCH] BaseTools: add some comment for .PrebuildEnv file's usage This patch add some comments to explain why we use .PrebuildEnv file to save environment variable settings set by the prebuild script. Cc: Liming Gao Contributed-under: TianoCore Contribution Agreement 1.0 Signed-off-by: Yonghong Zhu Reviewed-by: Liming Gao --- BaseTools/Source/Python/build/build.py | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/BaseTools/Source/Python/build/build.py b/BaseTools/Source/Python/build/build.py index 1e14fb4dcc..eff1e66b08 100644 --- a/BaseTools/Source/Python/build/build.py +++ b/BaseTools/Source/Python/build/build.py @@ -1029,6 +1029,11 @@ class Build(): if self.Prebuild: EdkLogger.info("\n- Prebuild Start -\n") self.LaunchPrebuildFlag = True + # + # The purpose of .PrebuildEnv file is capture environment variable settings set by the prebuild script + # and preserve them for the rest of the main build step, because the child process environment will + # evaporate as soon as it exits, we cannot get it in build step. + # PrebuildEnvFile = os.path.join(GlobalData.gConfDirectory,'.cache','.PrebuildEnv') if os.path.isfile(PrebuildEnvFile): os.remove(PrebuildEnvFile) -- 2.39.2