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From d7b6c04aaf416344332e73f49fe457013e3ccf36 Mon Sep 17 00:00:00 2001
From: Alexander Couzens <lynxis@fe80.eu>
Date: Sun, 10 Dec 2017 00:54:06 +0100
Subject: [PATCH] CMakeLists: build reproducible by default
Merged-upstream: yes
Using the build user and build hostname as part of the git hash breaks
reproducible builds. Make this part optional, but build reproducible by
default.
---
CMakeLists.txt | 47 +++++++++++++++++++++++++++--------------------
1 file changed, 27 insertions(+), 20 deletions(-)
Index: libwebsockets-2.4.0/CMakeLists.txt
===================================================================
--- libwebsockets-2.4.0.orig/CMakeLists.txt
+++ libwebsockets-2.4.0/CMakeLists.txt
@@ -39,26 +39,32 @@ message(STATUS "CMAKE_TOOLCHAIN_FILE='${
find_package(Git)
if(GIT_EXECUTABLE)
execute_process(
- WORKING_DIRECTORY "${CMAKE_CURRENT_SOURCE_DIR}"
- COMMAND "${GIT_EXECUTABLE}" describe
- OUTPUT_VARIABLE GIT_HASH
- OUTPUT_STRIP_TRAILING_WHITESPACE
- )
- execute_process(
- WORKING_DIRECTORY "${CMAKE_CURRENT_SOURCE_DIR}"
- COMMAND "whoami"
- OUTPUT_VARIABLE GIT_USER
- OUTPUT_STRIP_TRAILING_WHITESPACE
- )
- execute_process(
- WORKING_DIRECTORY "${CMAKE_CURRENT_SOURCE_DIR}"
- COMMAND "hostname"
- OUTPUT_VARIABLE GIT_HOST
- OUTPUT_STRIP_TRAILING_WHITESPACE
- )
- string(REGEX REPLACE "([^\\])[\\]([^\\])" "\\1\\\\\\\\\\2" GIT_USER ${GIT_USER})
- set(LWS_BUILD_HASH ${GIT_USER}@${GIT_HOST}-${GIT_HASH})
- message("Git commit hash: ${LWS_BUILD_HASH}")
+ WORKING_DIRECTORY "${CMAKE_CURRENT_SOURCE_DIR}"
+ COMMAND "${GIT_EXECUTABLE}" describe
+ OUTPUT_VARIABLE GIT_HASH
+ OUTPUT_STRIP_TRAILING_WHITESPACE
+ )
+ set(LWS_BUILD_HASH ${GIT_HASH})
+
+ # appen the build user and hostname
+ if(NOT LWS_REPRODUCIBLE)
+ execute_process(
+ WORKING_DIRECTORY "${CMAKE_CURRENT_SOURCE_DIR}"
+ COMMAND "whoami"
+ OUTPUT_VARIABLE GIT_USER
+ OUTPUT_STRIP_TRAILING_WHITESPACE
+ )
+ execute_process(
+ WORKING_DIRECTORY "${CMAKE_CURRENT_SOURCE_DIR}"
+ COMMAND "hostname"
+ OUTPUT_VARIABLE GIT_HOST
+ OUTPUT_STRIP_TRAILING_WHITESPACE
+ )
+ string(REGEX REPLACE "([^\\])[\\]([^\\])" "\\1\\\\\\\\\\2" GIT_USER ${GIT_USER})
+ set(LWS_BUILD_HASH ${GIT_USER}@${GIT_HOST}-${GIT_HASH})
+ endif()
+
+ message("Git commit hash: ${LWS_BUILD_HASH}")
endif()
set(LWS_WITH_BUNDLED_ZLIB_DEFAULT OFF)
@@ -121,6 +127,7 @@ option(LWS_AVOID_SIGPIPE_IGN "Android 7+
option(LWS_WITH_STATS "Keep statistics of lws internal operations" OFF)
option(LWS_WITH_SOCKS5 "Allow use of SOCKS5 proxy on client connections" OFF)
option(LWS_WITH_PEER_LIMITS "Track peers and restrict resources a single peer can allocate" OFF)
+option(LWS_REPRODUCIBLE "Build libwebsockets reproducible. It removes the build user and hostname from the build" ON)
macro(confirm_command CMD NOCMD)
find_program (HAVE_CMD_${CMD} ${CMD} )
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