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# generates BuildInfo.h
#
# this module expects
# ETH_SOURCE_DIR - main CMAKE_SOURCE_DIR
# ETH_DST_DIR - main CMAKE_BINARY_DIR
# ETH_BUILD_TYPE
# ETH_BUILD_PLATFORM
#
# example usage:
# cmake -DETH_SOURCE_DIR=. -DETH_DST_DIR=build -DETH_BUILD_TYPE=Debug -DETH_BUILD_PLATFORM=Darwin.appleclang -P scripts/buildinfo.cmake
#
# Its main output variables are SOL_VERSION_BUILDINFO and SOL_VERSION_PRERELEASE
if (NOT ETH_BUILD_TYPE)
set(ETH_BUILD_TYPE "unknown")
endif()
if (NOT ETH_BUILD_PLATFORM)
set(ETH_BUILD_PLATFORM "unknown")
endif()
# Logic here: If prereleases.txt exists but is empty, it is a non-pre release.
# If it does not exist, create our own prerelease string
if (EXISTS ${ETH_SOURCE_DIR}/prerelease.txt)
file(READ ${ETH_SOURCE_DIR}/prerelease.txt SOL_VERSION_PRERELEASE)
string(STRIP "${SOL_VERSION_PRERELEASE}" SOL_VERSION_PRERELEASE)
else()
string(TIMESTAMP SOL_VERSION_PRERELEASE "develop.%Y.%m.%d" UTC)
string(REPLACE .0 . SOL_VERSION_PRERELEASE "${SOL_VERSION_PRERELEASE}")
endif()
if (EXISTS ${ETH_SOURCE_DIR}/commit_hash.txt)
file(READ ${ETH_SOURCE_DIR}/commit_hash.txt SOL_COMMIT_HASH)
string(STRIP ${SOL_COMMIT_HASH} SOL_COMMIT_HASH)
else()
execute_process(
COMMAND git --git-dir=${ETH_SOURCE_DIR}/.git --work-tree=${ETH_SOURCE_DIR} rev-parse --short=8 HEAD
OUTPUT_VARIABLE SOL_COMMIT_HASH OUTPUT_STRIP_TRAILING_WHITESPACE ERROR_QUIET
)
execute_process(
COMMAND git --git-dir=${ETH_SOURCE_DIR}/.git --work-tree=${ETH_SOURCE_DIR} diff HEAD --shortstat
OUTPUT_VARIABLE SOL_LOCAL_CHANGES OUTPUT_STRIP_TRAILING_WHITESPACE ERROR_QUIET
)
endif()
if (SOL_COMMIT_HASH)
string(STRIP ${SOL_COMMIT_HASH} SOL_COMMIT_HASH)
string(SUBSTRING ${SOL_COMMIT_HASH} 0 8 SOL_COMMIT_HASH)
endif()
if (NOT SOL_COMMIT_HASH)
message(FATAL_ERROR "Unable to determine commit hash. Either compile from within git repository or "
"supply a file called commit_hash.txt")
endif()
if (NOT SOL_COMMIT_HASH MATCHES [a-f0-9][a-f0-9][a-f0-9][a-f0-9][a-f0-9][a-f0-9][a-f0-9][a-f0-9])
message(FATAL_ERROR "Malformed commit hash \"${SOL_COMMIT_HASH}\". It has to consist of exactly 8 hex digits.")
endif()
if (SOL_COMMIT_HASH AND SOL_LOCAL_CHANGES)
set(SOL_COMMIT_HASH "${SOL_COMMIT_HASH}.mod")
endif()
set(SOL_VERSION_BUILDINFO "commit.${SOL_COMMIT_HASH}.${ETH_BUILD_PLATFORM}")
set(TMPFILE "${ETH_DST_DIR}/BuildInfo.h.tmp")
set(OUTFILE "${ETH_DST_DIR}/BuildInfo.h")
configure_file("${ETH_BUILDINFO_IN}" "${TMPFILE}")
include("${ETH_CMAKE_DIR}/EthUtils.cmake")
replace_if_different("${TMPFILE}" "${OUTFILE}" CREATE)
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