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cmake: fix build failure when git repo is initialized but no first commit

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Closes https://github.com/espressif/esp-idf/issues/3920
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Renz Christian Bagaporo 2019-08-27 09:24:17 +08:00 committed by Renz Bagaporo
parent 1592f338a6
commit 2d28fd2563
1 changed files with 6 additions and 4 deletions
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10
tools/cmake/third_party/GetGitRevisionDescription.cmake.in vendored
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@ -24,10 +24,12 @@ if(HEAD_CONTENTS MATCHES "ref")
if(EXISTS "@GIT_DIR@/${HEAD_REF}")
configure_file("@GIT_DIR@/${HEAD_REF}" "@GIT_DATA@/head-ref" COPYONLY)
else()
configure_file("@GIT_DIR@/packed-refs" "@GIT_DATA@/packed-refs" COPYONLY)
file(READ "@GIT_DATA@/packed-refs" PACKED_REFS)
if(${PACKED_REFS} MATCHES "([0-9a-z]*) ${HEAD_REF}")
set(HEAD_HASH "${CMAKE_MATCH_1}")
if(EXISTS "@GIT_DIR@/packed-refs")
configure_file("@GIT_DIR@/packed-refs" "@GIT_DATA@/packed-refs" COPYONLY)
file(READ "@GIT_DATA@/packed-refs" PACKED_REFS)
if(${PACKED_REFS} MATCHES "([0-9a-z]*) ${HEAD_REF}")
set(HEAD_HASH "${CMAKE_MATCH_1}")
endif()
endif()
endif()
else()