cmake: Fix generation of version.cpp

1 files changed, 74 insertions, 0 deletions

diff --git a/cmake/GitVersion.cmake b/cmake/GitVersion.cmake
new file mode 100644
index 000000000..a367787f1
--- /dev/null
+++ b/cmake/GitVersion.cmake
@@ -0,0 +1,74 @@
+# Copyright (c) 2014-2019, The Monero Project
+# 
+# All rights reserved.
+# 
+# Redistribution and use in source and binary forms, with or without modification, are
+# permitted provided that the following conditions are met:
+# 
+# 1. Redistributions of source code must retain the above copyright notice, this list of
+#    conditions and the following disclaimer.
+# 
+# 2. Redistributions in binary form must reproduce the above copyright notice, this list
+#    of conditions and the following disclaimer in the documentation and/or other
+#    materials provided with the distribution.
+# 
+# 3. Neither the name of the copyright holder nor the names of its contributors may be
+#    used to endorse or promote products derived from this software without specific
+#    prior written permission.
+# 
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY
+# EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+# MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
+# THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+# PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+# INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+# STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
+# THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+# 
+# Parts of this file are originally copyright (c) 2012-2013 The Cryptonote developers
+
+# Check what commit we're on
+
+function (get_version_tag_from_git GIT)
+    execute_process(COMMAND "${GIT}" rev-parse --short=9 HEAD
+                    RESULT_VARIABLE RET
+                    OUTPUT_VARIABLE COMMIT
+                    OUTPUT_STRIP_TRAILING_WHITESPACE)
+
+    if(RET)
+        # Something went wrong, set the version tag to -unknown
+
+        message(WARNING "Cannot determine current commit. Make sure that you are building either from a Git working tree or from a source archive.")
+        set(VERSIONTAG "unknown")
+        set(VERSION_IS_RELEASE "false")
+    else()
+        string(SUBSTRING ${COMMIT} 0 9 COMMIT)
+        message(STATUS "You are currently on commit ${COMMIT}")
+
+        # Get all the tags
+        execute_process(COMMAND "${GIT}" rev-list --tags --max-count=1 --abbrev-commit RESULT_VARIABLE RET OUTPUT_VARIABLE TAGGEDCOMMIT OUTPUT_STRIP_TRAILING_WHITESPACE)
+
+        if(NOT TAGGEDCOMMIT)
+            message(WARNING "Cannot determine most recent tag. Make sure that you are building either from a Git working tree or from a source archive.")
+            set(VERSIONTAG "${COMMIT}")
+            set(VERSION_IS_RELEASE "false")
+        else()
+            message(STATUS "The most recent tag was at ${TAGGEDCOMMIT}")
+
+            # Check if we're building that tagged commit or a different one
+            if(COMMIT STREQUAL TAGGEDCOMMIT)
+                message(STATUS "You are building a tagged release")
+                set(VERSIONTAG "release")
+                set(VERSION_IS_RELEASE "true")
+            else()
+                message(STATUS "You are ahead of or behind a tagged release")
+                set(VERSIONTAG "${COMMIT}")
+                set(VERSION_IS_RELEASE "false")
+            endif()
+        endif()	    
+    endif()
+
+    set(VERSIONTAG "${VERSIONTAG}" PARENT_SCOPE)
+    set(VERSION_IS_RELEASE "${VERSION_IS_RELEASE}" PARENT_SCOPE)
+endfunction()