added scm rev generation on Linux/cmake

2 files changed, 168 insertions, 0 deletions

diff --git a/externals/cmake-modules/GetGitRevisionDescription.cmake b/externals/cmake-modules/GetGitRevisionDescription.cmake
new file mode 100644
index 000000000..2b9cde061
--- /dev/null
+++ b/externals/cmake-modules/GetGitRevisionDescription.cmake
@@ -0,0 +1,130 @@
+# - Returns a version string from Git
+#
+# These functions force a re-configure on each git commit so that you can
+# trust the values of the variables in your build system.
+#
+#  get_git_head_revision(<refspecvar> <hashvar> [<additional arguments to git describe> ...])
+#
+# Returns the refspec and sha hash of the current head revision
+#
+#  git_describe(<var> [<additional arguments to git describe> ...])
+#
+# Returns the results of git describe on the source tree, and adjusting
+# the output so that it tests false if an error occurs.
+#
+#  git_get_exact_tag(<var> [<additional arguments to git describe> ...])
+#
+# Returns the results of git describe --exact-match on the source tree,
+# and adjusting the output so that it tests false if there was no exact
+# matching tag.
+#
+# Requires CMake 2.6 or newer (uses the 'function' command)
+#
+# Original Author:
+# 2009-2010 Ryan Pavlik <rpavlik@iastate.edu> <abiryan@ryand.net>
+# http://academic.cleardefinition.com
+# Iowa State University HCI Graduate Program/VRAC
+#
+# Copyright Iowa State University 2009-2010.
+# Distributed under the Boost Software License, Version 1.0.
+# (See accompanying file LICENSE_1_0.txt or copy at
+# http://www.boost.org/LICENSE_1_0.txt)
+
+if(__get_git_revision_description)
+        return()
+endif()
+set(__get_git_revision_description YES)
+
+# We must run the following at "include" time, not at function call time,
+# to find the path to this module rather than the path to a calling list file
+get_filename_component(_gitdescmoddir ${CMAKE_CURRENT_LIST_FILE} PATH)
+
+function(get_git_head_revision _refspecvar _hashvar)
+        set(GIT_PARENT_DIR "${CMAKE_CURRENT_SOURCE_DIR}")
+        set(GIT_DIR "${GIT_PARENT_DIR}/.git")
+        while(NOT EXISTS "${GIT_DIR}")  # .git dir not found, search parent directories
+                set(GIT_PREVIOUS_PARENT "${GIT_PARENT_DIR}")
+                get_filename_component(GIT_PARENT_DIR ${GIT_PARENT_DIR} PATH)
+                if(GIT_PARENT_DIR STREQUAL GIT_PREVIOUS_PARENT)
+                        # We have reached the root directory, we are not in git
+                        set(${_refspecvar} "GITDIR-NOTFOUND" PARENT_SCOPE)
+                        set(${_hashvar} "GITDIR-NOTFOUND" PARENT_SCOPE)
+                        return()
+                endif()
+                set(GIT_DIR "${GIT_PARENT_DIR}/.git")
+        endwhile()
+        # check if this is a submodule
+        if(NOT IS_DIRECTORY ${GIT_DIR})
+                file(READ ${GIT_DIR} submodule)
+                string(REGEX REPLACE "gitdir: (.*)\n$" "\\1" GIT_DIR_RELATIVE ${submodule})
+                get_filename_component(SUBMODULE_DIR ${GIT_DIR} PATH)
+                get_filename_component(GIT_DIR ${SUBMODULE_DIR}/${GIT_DIR_RELATIVE} ABSOLUTE)
+        endif()
+        set(GIT_DATA "${CMAKE_CURRENT_BINARY_DIR}/CMakeFiles/git-data")
+        if(NOT EXISTS "${GIT_DATA}")
+                file(MAKE_DIRECTORY "${GIT_DATA}")
+        endif()
+
+        if(NOT EXISTS "${GIT_DIR}/HEAD")
+                return()
+        endif()
+        set(HEAD_FILE "${GIT_DATA}/HEAD")
+        configure_file("${GIT_DIR}/HEAD" "${HEAD_FILE}" COPYONLY)
+
+        configure_file("${_gitdescmoddir}/GetGitRevisionDescription.cmake.in"
+                "${GIT_DATA}/grabRef.cmake"
+                @ONLY)
+        include("${GIT_DATA}/grabRef.cmake")
+
+        set(${_refspecvar} "${HEAD_REF}" PARENT_SCOPE)
+        set(${_hashvar} "${HEAD_HASH}" PARENT_SCOPE)
+endfunction()
+
+function(git_describe _var)
+        if(NOT GIT_FOUND)
+                find_package(Git QUIET)
+        endif()
+        #get_git_head_revision(refspec hash)
+        if(NOT GIT_FOUND)
+                set(${_var} "GIT-NOTFOUND" PARENT_SCOPE)
+                return()
+        endif()
+        #if(NOT hash)
+        #       set(${_var} "HEAD-HASH-NOTFOUND" PARENT_SCOPE)
+        #       return()
+        #endif()
+
+        # TODO sanitize
+        #if((${ARGN}" MATCHES "&&") OR
+        #       (ARGN MATCHES "||") OR
+        #       (ARGN MATCHES "\\;"))
+        #       message("Please report the following error to the project!")
+        #       message(FATAL_ERROR "Looks like someone's doing something nefarious with git_describe! Passed arguments ${ARGN}")
+        #endif()
+
+        #message(STATUS "Arguments to execute_process: ${ARGN}")
+
+        execute_process(COMMAND
+                "${GIT_EXECUTABLE}"
+                describe
+                ${hash}
+                ${ARGN}
+                WORKING_DIRECTORY
+                "${CMAKE_SOURCE_DIR}"
+                RESULT_VARIABLE
+                res
+                OUTPUT_VARIABLE
+                out
+                ERROR_QUIET
+                OUTPUT_STRIP_TRAILING_WHITESPACE)
+        if(NOT res EQUAL 0)
+                set(out "${out}-${res}-NOTFOUND")
+        endif()
+
+        set(${_var} "${out}" PARENT_SCOPE)
+endfunction()
+
+function(git_get_exact_tag _var)
+        git_describe(out --exact-match ${ARGN})
+        set(${_var} "${out}" PARENT_SCOPE)
+endfunction()
diff --git a/externals/cmake-modules/GetGitRevisionDescription.cmake.in b/externals/cmake-modules/GetGitRevisionDescription.cmake.in
new file mode 100644
index 000000000..888ce13aa
--- /dev/null
+++ b/externals/cmake-modules/GetGitRevisionDescription.cmake.in
@@ -0,0 +1,38 @@
+# 
+# Internal file for GetGitRevisionDescription.cmake
+#
+# Requires CMake 2.6 or newer (uses the 'function' command)
+#
+# Original Author:
+# 2009-2010 Ryan Pavlik <rpavlik@iastate.edu> <abiryan@ryand.net>
+# http://academic.cleardefinition.com
+# Iowa State University HCI Graduate Program/VRAC
+#
+# Copyright Iowa State University 2009-2010.
+# Distributed under the Boost Software License, Version 1.0.
+# (See accompanying file LICENSE_1_0.txt or copy at
+# http://www.boost.org/LICENSE_1_0.txt)
+
+set(HEAD_HASH)
+
+file(READ "@HEAD_FILE@" HEAD_CONTENTS LIMIT 1024)
+
+string(STRIP "${HEAD_CONTENTS}" HEAD_CONTENTS)
+if(HEAD_CONTENTS MATCHES "ref")
+        # named branch
+        string(REPLACE "ref: " "" HEAD_REF "${HEAD_CONTENTS}")
+        if(EXISTS "@GIT_DIR@/${HEAD_REF}")
+                configure_file("@GIT_DIR@/${HEAD_REF}" "@GIT_DATA@/head-ref" COPYONLY)
+        elseif(EXISTS "@GIT_DIR@/logs/${HEAD_REF}")
+                configure_file("@GIT_DIR@/logs/${HEAD_REF}" "@GIT_DATA@/head-ref" COPYONLY)
+                set(HEAD_HASH "${HEAD_REF}")
+        endif()
+else()
+        # detached HEAD
+        configure_file("@GIT_DIR@/HEAD" "@GIT_DATA@/head-ref" COPYONLY)
+endif()
+
+if(NOT HEAD_HASH)
+        file(READ "@GIT_DATA@/head-ref" HEAD_HASH LIMIT 1024)
+        string(STRIP "${HEAD_HASH}" HEAD_HASH)
+endif()