cmake: find GIT_VER variables if there is no .git dir

find CEPH_GIT_VER & CEPH_GIT_NICE_VER if there is no
ceph/.git dir by parsing ceph/src/.git_version.

scenario is for building from source tarballs generated
by make-dist, since make-dist generates .git_version
by running make_version, and then packs .git_version
into the tarball.

Signed-off-by: Ali Maredia <amaredia@redhat.com>

diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt
index caab0a37cd37a93bb77e5e7c139a4577a15b8769..34ca3c1a826ffcc62d14236be722d98e2bbe1d02 100644 (file)
--- a/src/CMakeLists.txt
+++ b/src/CMakeLists.txt
@@ -182,6 +182,13 @@ option(ENABLE_GIT_VERSION "build Ceph with git version string" ON)
 if(${ENABLE_GIT_VERSION})
   get_git_head_revision(GIT_REFSPEC CEPH_GIT_VER)
   git_describe(CEPH_GIT_NICE_VER --always)
+  #if building from a source tarball via make-dist
+  if(${CEPH_GIT_VER} STREQUAL "GITDIR-NOTFOUND")
+    message(STATUS "Ceph/.git directory not found, parsing ${CMAKE_CURRENT_SOURCE_DIR}/.git_version for CEPH_GIT_VER and CEPH_GIT_NICE_VER")
+    file(STRINGS ${CMAKE_CURRENT_SOURCE_DIR}/.git_version CEPH_GIT_SHA_AND_TAG)
+    list(GET CEPH_GIT_SHA_AND_TAG 0 CEPH_GIT_VER)
+    list(GET CEPH_GIT_SHA_AND_TAG 1 CEPH_GIT_NICE_VER)
+  endif(${CEPH_GIT_VER} STREQUAL "GITDIR-NOTFOUND")
 else(${ENABLE_GIT_VERSION})
   set(CEPH_GIT_VER "no_version")
   set(CEPH_GIT_NICE_VER "Development")