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librtlsdr
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cmake/Modules/Version.cmake: don't use Git version if not in a Git repo 

If the librtlsdr code comes from a tarball, it doesn't have any .git/
metadata, and therefore even if Git (as a tool) is found, the logic in
cmake/Modules/Version.cmake fails finding a version through Git:

-- Extracting version information from git describe...
fatal: Not a git repository (or any of the parent directories): .git

As a consequence, the VERSION variable is empty, which later causes
cmake to bail out with:

CMake Error at /home/test/autobuild/run/instance-1/output-1/host/share/cmake-3.15/Modules/WriteBasicConfigVersionFile.cmake:43 (message):
  No VERSION specified for WRITE_BASIC_CONFIG_VERSION_FILE()
Call Stack (most recent call first):
  /home/test/autobuild/run/instance-1/output-1/host/share/cmake-3.15/Modules/CMakePackageConfigHelpers.cmake:225 (write_basic_config_version_file)
  CMakeLists.txt:173 (write_basic_package_version_file)

To avoid this, we only use Git to determine the version if the cmake
project top-level source directory has a .git/ folder.

Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
(cherry picked from commit feb5d9c6b7bcec788f9b01781c205e31fff260e7)
development
Thomas Petazzoni 2020-08-11 23:07:08 +02:00 committed by hayati ayguen
parent c6bae8327a
commit 7396271f26
1 changed files with 1 additions and 1 deletions
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cmake/Modules/Version.cmake
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@ -32,7 +32,7 @@ set(PATCH_VERSION ${VERSION_INFO_PATCH_VERSION})
########################################################################
find_package(Git QUIET)
if(GIT_FOUND)
if(GIT_FOUND AND EXISTS ${CMAKE_SOURCE_DIR}/.git)
message(STATUS "Extracting version information from git describe...")
execute_process(
COMMAND ${GIT_EXECUTABLE} describe --always --abbrev=4 --long