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another fix for CMake empty vars

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This commit is contained in:
Riccardo Spagni 2014-09-15 23:07:47 +02:00
parent de442fb9ad
commit ffe7bf8c1c
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1 changed files with 5 additions and 3 deletions
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8
src/version.cmake
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@ -40,13 +40,15 @@ if(RET)
else()
message(STATUS "You are currently on commit ${COMMIT}")
# Give our output variable a default value, because CMake likes to choke on empty variables
set(TAGGEDCOMMITOUT "a")
# Get all the tags
execute_process(COMMAND "${GIT}" show-ref --tags -d --abbrev RESULT_VARIABLE RET OUTPUT_VARIABLE TAGGEDCOMMITOUT OUTPUT_STRIP_TRAILING_WHITESPACE)
# Make sure we actually got some tags
string(LENGTH ${TAGGEDCOMMITOUT} TLEN)
if(TAGGEDCOMMITOUT)
string(LENGTH ${TAGGEDCOMMITOUT} TLEN)
else()
set(TLEN 1)
endif()
if(RET OR TLEN LESS 5)
message(WARNING "Cannot determine most recent tag. Make sure that you are building either from a Git working tree or from a source archive.")