Merge branch 'master' of https://git.cern.ch/reps/AliRoot

[u/mrichter/AliRoot.git] / CMakeLists.txt

diff --git a/CMakeLists.txt b/CMakeLists.txt
index f794c8ebe45fa1c9052e2e41321b90370d903a3f..0aa1d8d2deffad3dae33dd111dc06ce967e1bbc6 100644 (file)
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -1,4 +1,4 @@
-# -*- mode: cmake -*-
+# -*- mode: cmake -*-/usr/share/applications/thunderbird.desktop 
 
 # Top level CMakeList.txt file for the AliRoot Build System
 #
@@ -27,21 +27,24 @@ endif(NOT ALICE_ROOT)
 
 set(ALICE_INSTALL $ENV{ALICE_INSTALL})
 # Set AliRoot Installation directory 
-if(NOT ALICE_INSTALL)
-  message(STATUS "AliRoot files will be installed in ${ALICE_ROOT}. You can specify a different location by setting ALICE_INSTALL environment variable")
-  set(ALICE_INSTALL ${ALICE_ROOT})
-else()
-  message(STATUS "AliRoot files will be installed in ${ALICE_INSTALL}")
-endif(NOT ALICE_INSTALL)
-if(${ALICE_INSTALL} STREQUAL ${CMAKE_BINARY_DIR})
-  message(FATAL_ERROR "Install dir should be different from build dir")
+# If CMAKE_INSTALL_PREFIX was not set, then we set it to ALICE_INSTALL. 
+# If ALICE_INSTALL was not defined, then it will default to the source directory
+if(CMAKE_INSTALL_PREFIX_INITIALIZED_TO_DEFAULT)
+    if(ALICE_INSTALL)
+       message(STATUS "AliRoot files will be installed in ${ALICE_INSTALL}")
+    else()
+       message(STATUS "AliRoot files will be installed in ${ALICE_ROOT}. You
+       can specify a different location by passing -DCMAKE_INSTALL_PREFIX or
+       by setting ALICE_INSTALL environment variable")
+       set(ALICE_INSTALL ${ALICE_ROOT})
+       if(${ALICE_INSTALL} STREQUAL ${CMAKE_BINARY_DIR})
+           message(FATAL_ERROR "The install directory must differ from the
+           build directory")
+       endif()
+    endif()
+    set(CMAKE_INSTALL_PREFIX ${ALICE_INSTALL} CACHE STRING "Install dir" FORCE)
 endif()
 
-# If CMAKE_INSTALL_PREFIX was not set than we set it to ALICE_INSTALL. 
-# If ALICE_INSTALL was not defined than it will default to source directory
-if(NOT CMAKE_INSTALL_PREFIX)
-  set(CMAKE_INSTALL_PREFIX ${ALICE_INSTALL})
-endif()
 
 # Environment for SHUTTLE
 set(DIMDIR $ENV{DIMDIR})
@@ -96,6 +99,10 @@ find_package(CPack)
 # ------------------------------
 find_package(ZeroMQ)
 
+# fastjet
+# ------------------------------
+find_package(FASTJET)
+
 #--------------------------------------------------------------------------------#
 # Environment/Compiler Configuration                                             #
 #--------------------------------------------------------------------------------#
@@ -180,7 +187,12 @@ set(LIBS ${ROOTCLIBS} ${ROOTPLIBS} ${SYSLIBS})
 
 # Configure ARVerion.h
 # ------------------------------
-#If the sources were taken from Git
+# If the sources were taken from Git
+# Sets 3 git variables
+#  - GIT_REFSPEC - complete name of the current reference
+#  - ALIROOT_BRANCH - name of the branch or tag extracted from the current reference
+#  - GIT_SHA1 - current hash in the long format
+#  - GIT_SHORT_SHA1 - current hash in the short format
 if(EXISTS ${PROJECT_SOURCE_DIR}/.git/)
  include(GetGitRevisionDescription)
  
@@ -188,19 +200,41 @@ if(EXISTS ${PROJECT_SOURCE_DIR}/.git/)
  
  if(GIT_FOUND)
   get_git_head_revision(GIT_REFSPEC GIT_SHA1)
-  message(STATUS "Aliroot branch - ${GIT_REFSPEC} Revision - ${GIT_SHA1} ")
+
+  # GIT_REFSPEC is empty for detached mode = tags in detached mode or checkout to specific hash
+ 
+
+  # returns the closest reference to the current hash
+  # name of the current tag or heads/branch in the case of branches
+  git_describe(ALIROOT_GIT_TAG "--all" "--abbrev=0")
 
   STRING(REGEX REPLACE "^(.+/)(.+)/(.*)$" "\\2" BRANCH_TYPE "${GIT_REFSPEC}" )
-  
+
+  # the revision is not set in the case of a branch, it means we are doing development
+  # and the revision will trigger a reconfiguration
   if(BRANCH_TYPE STREQUAL "heads")
    set(ALIROOT_REVISION "ThisIsaBranchNoRevisionProvided")
+   STRING(REGEX REPLACE "^(.+/)(.+/)(.*)$" "\\3" SHORT_BRANCH "${GIT_REFSPEC}" )
   else()
+   set(SHORT_BRANCH ${ALIROOT_GIT_TAG})
    set(ALIROOT_REVISION ${GIT_SHA1})
   endif()
 
-  STRING(REGEX REPLACE "^(.+/)(.+/)(.*)$" "\\3" SHORT_BRANCH "${GIT_REFSPEC}" )
-
   set(ALIROOT_BRANCH ${SHORT_BRANCH})
+  
+  # generate the short version of the revision hash
+  execute_process(COMMAND git rev-parse --short ${GIT_SHA1} 
+                          WORKING_DIRECTORY ${CMAKE_SOURCE_DIR} 
+                          OUTPUT_STRIP_TRAILING_WHITESPACE 
+                          RESULT_VARIABLE res
+                          OUTPUT_VARIABLE GIT_SHORT_SHA1)
+
+  # if the rev-parse fails we set the short sha to the long initial one
+  if(NOT res EQUAL 0)
+    set(GIT_SHORT_SHA1 ${GIT_SHA1})
+  endif()
+  
+  message(STATUS "Aliroot branch/tag: \"${ALIROOT_BRANCH}\" - Revision:  \"${GIT_SHORT_SHA1}\" ")
 
  else()
   message("Git not installed. I can't tell you which revision you are using!")
@@ -209,7 +243,7 @@ else()
  message("AliRoot sources not downloaded from a Version Control System. I can't tell which revision you are using!")
 endif(EXISTS ${PROJECT_SOURCE_DIR}/.git/)
 
-configure_file(${PROJECT_SOURCE_DIR}/cmake/ARVersion.h.tmp ${CMAKE_INCLUDE_EXPORT_DIRECTORY}/ARVersion.h @ONLY)
+configure_file(${PROJECT_SOURCE_DIR}/cmake/ARVersion.h.tmp ${CMAKE_INCLUDE_EXPORT_DIRECTORY}/FromTemplate/ARVersion.h @ONLY)
 
 string (REPLACE "-" "." ALIROOT_BRANCH_SPEC "${ALIROOT_BRANCH}")