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CMakeLists: build reproducible by default

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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.
This commit is contained in:
Alexander Couzens 2017-12-10 00:54:06 +01:00 • committed by Andy Green
parent 8ff7dce46d
commit d7b6c04aaf
1 changed files with 27 additions and 20 deletions
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47
CMakeLists.txt
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@ -95,6 +95,7 @@ option(LWS_WITH_GENRSA "Enable support for Generic RSA (RSA with api independent
option(LWS_WITH_SELFTESTS "Selftests run at context creation" OFF)
option(LWS_WITH_GCOV "Build with gcc gcov coverage instrumentation" OFF)
option(LWS_WITH_EXPORT_LWSTARGETS "Export libwebsockets CMake targets. Disable if they conflict with an outer cmake project." ON)
option(LWS_REPRODUCIBLE "Build libwebsockets reproducible. It removes the build user and hostname from the build" ON)
#
# End of user settings
#
@ -138,26 +139,32 @@ message(STATUS "CMAKE_TOOLCHAIN_FILE='${CMAKE_TOOLCHAIN_FILE}'")
find_package(Git)
if(GIT_EXECUTABLE)
execute_process(
WORKING_DIRECTORY "${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()
if (LWS_WITH_LWSWS)