Use cmake TIMESTAMP function
because it is not only platform independent
but also allows to override the build date
This helps to make tigervnc builds reproducible
See https://reproducible-builds.org/ for why this is good
Also adds UTC flag, to be independent of timezone.
Also changes JAVA_DATE format to ISO-8601 date format.
Requires cmake-2.8.11+ from 2013
diff --git a/CMakeLists.txt b/CMakeLists.txt
index 4fb3360..8a89d45 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -2,7 +2,7 @@
# Setup
#
-cmake_minimum_required(VERSION 2.8)
+cmake_minimum_required(VERSION 2.8.11)
if(POLICY CMP0022)
cmake_policy(SET CMP0022 OLD)
endif()
@@ -43,9 +43,7 @@
endif()
if(NOT BUILD_TIMESTAMP)
- set(BUILD_TIMESTAMP "")
- execute_process(COMMAND "date" "+%Y-%m-%d %H:%M" OUTPUT_VARIABLE BUILD_TIMESTAMP)
- string(REGEX REPLACE "\n" "" BUILD_TIMESTAMP ${BUILD_TIMESTAMP})
+ STRING(TIMESTAMP BUILD_TIMESTAMP "%Y-%m-%d %H:%M" UTC)
endif()
# Default to optimised builds instead of debug ones. Our code has no bugs ;)