Replace calls to "hg" by calls to "git"

1 files changed, 10 insertions, 12 deletions

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 36a155133..81c98a026 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -42,27 +42,25 @@ string(REGEX MATCH "define[ \t]+EIGEN_MINOR_VERSION[ \t]+([0-9]+)" _eigen_minor_
 set(EIGEN_MINOR_VERSION "${CMAKE_MATCH_1}")
 set(EIGEN_VERSION_NUMBER ${EIGEN_WORLD_VERSION}.${EIGEN_MAJOR_VERSION}.${EIGEN_MINOR_VERSION})
 
-# if we are not in a mercurial clone
-if(IS_DIRECTORY ${CMAKE_SOURCE_DIR}/.hg)
-  # if the mercurial program is absent or this will leave the EIGEN_HG_CHANGESET string empty,
+# if we are not in a git clone
+if(IS_DIRECTORY ${CMAKE_SOURCE_DIR}/.git)
+  # if the git program is absent or this will leave the EIGEN_GIT_REVNUM string empty,
   # but won't stop CMake.
-  execute_process(COMMAND hg tip -R ${CMAKE_SOURCE_DIR} OUTPUT_VARIABLE EIGEN_HGTIP_OUTPUT)
-  execute_process(COMMAND hg branch -R ${CMAKE_SOURCE_DIR} OUTPUT_VARIABLE EIGEN_BRANCH_OUTPUT)
+  execute_process(COMMAND git ls-remote --refs -q ${CMAKE_SOURCE_DIR} HEAD OUTPUT_VARIABLE EIGEN_GIT_OUTPUT)
 endif()
 
-# if this is the default (aka development) branch, extract the mercurial changeset number from the hg tip output...
-if(EIGEN_BRANCH_OUTPUT MATCHES "default")
-string(REGEX MATCH "^changeset: *[0-9]*:([0-9;a-f]+).*" EIGEN_HG_CHANGESET_MATCH "${EIGEN_HGTIP_OUTPUT}")
-set(EIGEN_HG_CHANGESET "${CMAKE_MATCH_1}")
+# extract the git rev number from the git output...
+if(EIGEN_GIT_OUTPUT)
+string(REGEX MATCH "^([0-9;a-f]+).*" EIGEN_GIT_CHANGESET_MATCH "${EIGEN_GIT_OUTPUT}")
+set(EIGEN_GIT_REVNUM "${CMAKE_MATCH_1}")
 endif()
 #...and show it next to the version number
-if(EIGEN_HG_CHANGESET)
-  set(EIGEN_VERSION "${EIGEN_VERSION_NUMBER} (mercurial changeset ${EIGEN_HG_CHANGESET})")
+if(EIGEN_GIT_REVNUM)
+  set(EIGEN_VERSION "${EIGEN_VERSION_NUMBER} (git rev ${EIGEN_GIT_REVNUM})")
 else()
   set(EIGEN_VERSION "${EIGEN_VERSION_NUMBER}")
 endif()
 
-
 include(CheckCXXCompilerFlag)
 include(GNUInstallDirs)