[Git][ghc/ghc][master] Use "-V" for alex version check for better backward compatibility

[Marge Bot (@marge-bot)]

Marge Bot pushed to branch master at Glasgow Haskell Compiler / GHC


Commits:
c7be0c68 by mmzk1526 at 2024-01-03T20:10:07-05:00
Use "-V" for alex version check for better backward compatibility
Fixes #24302.
In recent versions of alex, "-v" is used for "--verbose" instead of "-version".

- - - - -


1 changed file:

- m4/fptools_alex.m4


Changes:

=====================================
m4/fptools_alex.m4
=====================================
@@ -14,7 +14,7 @@ AC_SUBST(AlexCmd,$ALEX)
 AC_CACHE_CHECK([for version of alex], fptools_cv_alex_version,
 changequote(, )dnl
 [if test x"$AlexCmd" != x; then
-   fptools_cv_alex_version=`"$AlexCmd" -v |
+   fptools_cv_alex_version=`"$AlexCmd" -V |
               grep 'Alex [Vv]ersion' | sed -e 's/Alex [Vv]ersion \([0-9\.]*\).*/\1/g'` ;
 else
    fptools_cv_alex_version="";



View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/commit/c7be0c680d96ba6209c86e509ab2682e5041a53d

-- 
View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/commit/c7be0c680d96ba6209c86e509ab2682e5041a53d
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