From be2ab082ad89027f603e7ad18d6e8c56f61e3f46 Mon Sep 17 00:00:00 2001
From: Arne Morten Kvarving <arne.morten.kvarving@sintef.no>
Date: Mon, 20 Oct 2014 14:52:52 +0200
Subject: [PATCH] add check-commits target

---
 CMakeLists.txt                   |  6 +-
 cmake/Scripts/CheckCommits.cmake | 99 ++++++++++++++++++++++++++++++++
 2 files changed, 104 insertions(+), 1 deletion(-)
 create mode 100644 cmake/Scripts/CheckCommits.cmake

diff --git a/CMakeLists.txt b/CMakeLists.txt
index b33356d9..d52c6a61 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -125,4 +125,8 @@ endmacro (install_hook)
 # all setup common to the OPM library modules is done here
 include (OpmLibMain)
 
-
+add_custom_target(check-commits
+									COMMAND ${CMAKE_COMMAND}
+													-DPROJECT_SOURCE_DIR=${PROJECT_SOURCE_DIR}
+													-DCMAKE_BINARY_DIR=${CMAKE_BINARY_DIR}
+													-P ${PROJECT_SOURCE_DIR}/cmake/Scripts/CheckCommits.cmake)
diff --git a/cmake/Scripts/CheckCommits.cmake b/cmake/Scripts/CheckCommits.cmake
new file mode 100644
index 00000000..3aa9807a
--- /dev/null
+++ b/cmake/Scripts/CheckCommits.cmake
@@ -0,0 +1,99 @@
+find_package(Git REQUIRED)
+
+macro(sanity_check message)
+  if(status_code)
+    message(FATAL_ERROR "${message}")
+  endif()
+endmacro()
+
+# Check that there are no changes in working-tree
+execute_process(COMMAND ${GIT_EXECUTABLE} diff --quiet
+                RESULT_VARIABLE status_code
+                WORKING_DIRECTORY ${PROJECT_SOURCE_DIR})
+sanity_check("Cannot run with working tree changes. Commit, stash or drop them.")
+
+# Setup base of tests
+set(check_base $ENV{CHECK_BASE})
+if(NOT check_base)
+  set(check_base origin/master)
+endif()
+
+# Setup end of tests
+set(check_head $ENV{CHECK_HEAD})
+if(NOT check_head)
+  set(check_head HEAD)
+endif()
+
+# Setup target to build
+set(check_target $ENV{CHECK_TARGET})
+if(NOT check_target)
+  set(check_target all;test)
+endif()
+
+# Build threads
+set(build_threads $ENV{CHECK_THREADS})
+if(NOT build_threads)
+  if(UNIX)
+    if(APPLE)
+      execute_process(COMMAND sysctl hw.ncpu
+                      OUTPUT_VARIABLE build_threads)
+      string(REPLACE " " ";" build_threads_list ${build_threads)
+      list(GET build_threads_list 1 build_threads)
+    else()
+      find_program(NPROC_COMMAND nproc)
+      if(NPROC_COMMAND)
+        execute_process(COMMAND ${NPROC_COMMAND}
+                        OUTPUT_VARIABLE build_threads)
+        string(REGEX REPLACE "(\r?\n)+$" "" build_threads "${build_threads}")
+      endif()
+    endif()
+  endif()
+endif()
+
+# If for some reason we could not find the info - e.g. centos5 where nproc is missing
+if(NOT build_threads)
+  set(build_threads 1)
+endif()
+
+# Record current HEAD
+execute_process(COMMAND ${GIT_EXECUTABLE} rev-parse --abbrev-ref HEAD
+                OUTPUT_VARIABLE current_branch
+                WORKING_DIRECTORY ${PROJECT_SOURCE_DIR})
+
+string(REGEX REPLACE "(\r?\n)+$" "" current_branch "${current_branch}")
+
+# Grab revision list
+execute_process(COMMAND ${GIT_EXECUTABLE} rev-list ${check_base}..${check_head} --reverse
+                OUTPUT_VARIABLE rev_list
+                WORKING_DIRECTORY ${PROJECT_SOURCE_DIR})
+
+string(REPLACE "\n" ";" rev_list ${rev_list})
+foreach(rev ${rev_list})
+  # Checkout
+  message("Testing revision ${rev}")
+  execute_process(COMMAND ${GIT_EXECUTABLE} checkout ${rev}
+                  RESULT_VARIABLE status_code
+                  WORKING_DIRECTORY ${PROJECT_SOURCE_DIR})
+  sanity_check("Failed to checkout ${rev}")
+
+  # Build
+  foreach(tgt ${check_target})
+    if(build_threads GREATER 2)
+      execute_process(COMMAND ${CMAKE_COMMAND} "--build" "${CMAKE_BINARY_DIR}" "--target" "${tgt}" "--use-stderr" "--" "-j${build_threads}"
+                      RESULT_VARIABLE status_code)
+    else()
+      execute_process(COMMAND ${CMAKE_COMMAND} "--build" "${CMAKE_BINARY_DIR}" "--target" "${tgt}" "--use-stderr"
+                      RESULT_VARIABLE status_code)
+    endif()
+    sanity_check("Failed to build target '${tgt}'")
+  endforeach()
+  if(status_code)
+    execute_process(COMMAND ${GIT_EXECUTABLE} checkout ${current_branch}
+                    WORKING_DIRECTORY ${PROJECT_SOURCE_DIR})
+  endif()
+  sanity_check("Failed to build target for revision ${rev}")
+endforeach()
+
+message("Everything checks out fine")
+execute_process(COMMAND ${GIT_EXECUTABLE} checkout ${current_branch}
+                WORKING_DIRECTORY ${PROJECT_SOURCE_DIR})