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FindGSL: Improve version extraction regex

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Backport commit 58f2708b90 (FindGSL: Improve version extraction regex,
2021-12-17) to the CMake 3.22 branch.

Fixes: #23017
This commit is contained in:
مهدي شينون (Mehdi Chinoune)
2021-12-17 03:27:46 -05:00
committed by Brad King
parent d60647a52b
commit b67ff61c3a
1 changed files with 1 additions and 1 deletions
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Modules/FindGSL.cmake
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@@ -139,7 +139,7 @@ if( NOT GSL_VERSION )
# 2. If gsl-config is not available, try looking in gsl/gsl_version.h
if( NOT GSL_VERSION AND EXISTS "${GSL_INCLUDE_DIRS}/gsl/gsl_version.h" )
file( STRINGS "${GSL_INCLUDE_DIRS}/gsl/gsl_version.h" gsl_version_h_contents REGEX "define GSL_VERSION" )
string( REGEX REPLACE ".*([0-9]\\.[0-9][0-9]?).*" "\\1" GSL_VERSION ${gsl_version_h_contents} )
string( REGEX REPLACE ".*define[ ]+GSL_VERSION[ ]+\"([^\"]*)\".*" "\\1" GSL_VERSION ${gsl_version_h_contents} )
endif()
# might also try scraping the directory name for a regex match "gsl-X.X"