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Port --enable-gcc-warnings to clang 3.9.1

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* configure.ac (WERROR_CFLAGS): Omit -Wdouble-promotion if clang.
Problem reported by Philipp Stephani in:
http://lists.gnu.org/archive/html/emacs-devel/2017-05/msg00495.html
This commit is contained in:
Paul Eggert 2017-05-18 20:27:11 -07:00
parent 9647430ae8
commit af4ac3dc85
1 changed files with 1 additions and 0 deletions
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configure.ac
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@ -963,6 +963,7 @@ AS_IF([test $gl_gcc_warnings = no],
if test $emacs_cv_clang = yes; then
nw="$nw -Wcast-align"
nw="$nw -Wdouble-promotion"
fi
# This causes too much noise in the MinGW build