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configure: add further -Werror=... options to detected CFLAGS 

these four warning options were overlooked previously, likely because
they're not part of GCC's -Wall. they all detect constraint violations
(invalid C at the source level) and should always be on in -Werror
form.
This commit is contained in:
Rich Felker 2020-08-27 18:50:02 -04:00
parent 57f6e85c9d
commit e7f808e359
1 changed files with 4 additions and 0 deletions
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4
configure vendored
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@ -522,6 +522,10 @@ tryflag CFLAGS_AUTO -Werror=implicit-function-declaration
tryflag CFLAGS_AUTO -Werror=implicit-int
tryflag CFLAGS_AUTO -Werror=pointer-sign
tryflag CFLAGS_AUTO -Werror=pointer-arith
tryflag CFLAGS_AUTO -Werror=int-conversion
tryflag CFLAGS_AUTO -Werror=incompatible-pointer-types
tryflag CFLAGS_AUTO -Werror=discarded-qualifiers
tryflag CFLAGS_AUTO -Werror=discarded-array-qualifiers
#
# GCC ignores unused arguements by default, but Clang needs this extra