From feb5d9c6b7bcec788f9b01781c205e31fff260e7 Mon Sep 17 00:00:00 2001
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From: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
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Date: Tue, 11 Aug 2020 23:07:08 +0200
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Subject: [PATCH] cmake/Modules/Version.cmake: don't use Git version if not in
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a Git repo
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If the librtlsdr code comes from a tarball, it doesn't have any .git/
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metadata, and therefore even if Git (as a tool) is found, the logic in
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cmake/Modules/Version.cmake fails finding a version through Git:
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-- Extracting version information from git describe...
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fatal: Not a git repository (or any of the parent directories): .git
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As a consequence, the VERSION variable is empty, which later causes
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cmake to bail out with:
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CMake Error at /home/test/autobuild/run/instance-1/output-1/host/share/cmake-3.15/Modules/WriteBasicConfigVersionFile.cmake:43 (message):
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No VERSION specified for WRITE_BASIC_CONFIG_VERSION_FILE()
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Call Stack (most recent call first):
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/home/test/autobuild/run/instance-1/output-1/host/share/cmake-3.15/Modules/CMakePackageConfigHelpers.cmake:225 (write_basic_config_version_file)
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CMakeLists.txt:173 (write_basic_package_version_file)
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To avoid this, we only use Git to determine the version if the cmake
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project top-level source directory has a .git/ folder.
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Upstream: https://github.com/librtlsdr/librtlsdr/pull/75
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Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
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---
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cmake/Modules/Version.cmake | 2 +-
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1 file changed, 1 insertion(+), 1 deletion(-)
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diff --git a/cmake/Modules/Version.cmake b/cmake/Modules/Version.cmake
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index 2d4e76d..6f67fa4 100644
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--- a/cmake/Modules/Version.cmake
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+++ b/cmake/Modules/Version.cmake
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@@ -32,7 +32,7 @@ set(PATCH_VERSION ${VERSION_INFO_PATCH_VERSION})
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########################################################################
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find_package(Git QUIET)
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-if(GIT_FOUND)
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+if(GIT_FOUND AND EXISTS ${CMAKE_SOURCE_DIR}/.git)
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message(STATUS "Extracting version information from git describe...")
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execute_process(
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COMMAND ${GIT_EXECUTABLE} describe --always --abbrev=4 --long
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--
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2.26.2
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