re-added: compilation info when building libCEC

src/libcec/CMakeLists.txt

@@ -122,6 +122,7 @@ set(CEC_HEADERS devices/CECRecordingDevice.h
 source_group("Header Files" FILES ${CEC_HEADERS})
 
 # platform and device specific
+include(cmake/SetBuildInfo.cmake)
 include(cmake/CheckPlatformSupport.cmake)
 
 ## create project groups

src/libcec/cmake/CheckPlatformSupport.cmake

@@ -25,8 +25,6 @@ set(RPI_LIB_DIR     "" CACHE FILEPATH "root path to Raspberry Pi libs")
 # Pulse-Eight devices are always supported
 add_definitions(-DHAVE_P8_USB)
 
-set(LIB_INFO "compiled on ${CMAKE_SYSTEM}")
-
 if(WIN32)
   # Windows
   add_definitions(-DTARGET_WINDOWS -DNOMINMAX -D_CRT_SECURE_NO_WARNINGS -D_WINSOCKAPI_)

src/libcec/cmake/SetBuildInfo.cmake

@@ -0,0 +1,63 @@
+# - Set information about the system on which this was built in LIB_INFO
+#
+# This module sets the following variables
+#       LIB_INFO                  supported features and compilation information
+#
+
+if(WIN32)
+
+  # Windows
+  set(LIB_INFO "compiled on ${CMAKE_SYSTEM}")
+
+else()
+  # not Windows
+  set(LIB_INFO "")
+
+  # add git revision to compile info
+  find_program(HAVE_GIT_BIN git /bin /usr/bin /usr/local/bin)
+  if(HAVE_GIT_BIN)
+    exec_program(${CMAKE_CURRENT_SOURCE_DIR}/../../support/git-rev.sh HEAD OUTPUT_VARIABLE GIT_REVISION)
+    message(STATUS "git found: ${GIT_REVISION}")
+  endif()
+  if (GIT_REVISION)
+    set(LIB_INFO "git revision: ${GIT_REVISION},")
+  endif()
+
+  # add compilation date to compile info
+  find_program(HAVE_DATE_BIN date /bin /usr/bin /usr/local/bin)
+  if(HAVE_DATE_BIN)
+    exec_program(date ARGS -u OUTPUT_VARIABLE BUILD_DATE)
+    set(LIB_INFO "${LIB_INFO} compiled on ${BUILD_DATE}")
+  else()
+    set(LIB_INFO "${LIB_INFO} compiled on (unknown date)")
+  endif()
+
+  # add user who built this to compile info
+  find_program(HAVE_WHOAMI_BIN whoami /bin /usr/bin /usr/local/bin)
+  if(HAVE_WHOAMI_BIN)
+    exec_program(whoami OUTPUT_VARIABLE BUILD_USER)
+    set(LIB_INFO "${LIB_INFO} by ${BUILD_USER}")
+  else()
+    set(LIB_INFO "${LIB_INFO} by (unknown user)")
+  endif()
+
+
+  # add host on which this was built to compile info
+  find_program(HAVE_HOSTNAME_BIN hostname /bin /usr/bin /usr/local/bin)
+  if(HAVE_HOSTNAME_BIN)
+    exec_program(hostname ARGS -f OUTPUT_VARIABLE BUILD_HOST)
+    set(LIB_INFO "${LIB_INFO}@${BUILD_HOST}")
+  endif()
+
+  # add host info on which this was built to compile info
+  find_program(HAVE_UNAME_BIN uname /bin /usr/bin /usr/local/bin)
+  if(HAVE_UNAME_BIN)
+    exec_program(uname ARGS -s OUTPUT_VARIABLE BUILD_SYSNAME)
+    exec_program(uname ARGS -r OUTPUT_VARIABLE BUILD_SYSVER)
+    exec_program(uname ARGS -m OUTPUT_VARIABLE BUILD_SYSARCH)
+
+    set(LIB_INFO "${LIB_INFO} on ${BUILD_SYSNAME} ${BUILD_SYSVER} (${BUILD_SYSARCH})")
+  endif()
+
+endif()
+

support/git-rev.sh

@@ -0,0 +1,5 @@
+#!/bin/sh
+
+## cmake doesn't read the variable when it doesn't end with a newline, and I haven't figured out how to have it add a newline directly...
+echo -n "`git --no-pager log --abbrev=7 -n 1 --pretty=format:"%h"`\n"
+