configure: add --enable-werror
Provide a sane means of adding the -Werror compiler flag. Currently, some of our jenkins.sh add -Werror by passing 'CFLAGS="-Werror"', but that actually *overwrites* all the other CFLAGS we might want to have set. Maintain these exceptions from -Werror: a) deprecation (allow upstream to mark deprecation without breaking builds); b) "#warning" pragmas (allow to remind ourselves of errors without breaking builds) As a last configure step before generating the output files, print the complete CFLAGS and CPPFLAGS by means of AC_MSG_RESULT. Change-Id: I5280a692eaf8f626523e0fd929d1febaa2859104
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configure.ac
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configure.ac
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@ -53,6 +53,27 @@ then
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CPPFLAGS="$CPPFLAGS -fsanitize=address -fsanitize=undefined"
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CPPFLAGS="$CPPFLAGS -fsanitize=address -fsanitize=undefined"
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fi
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fi
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AC_ARG_ENABLE(werror,
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[AS_HELP_STRING(
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[--enable-werror],
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[Turn all compiler warnings into errors, with exceptions:
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a) deprecation (allow upstream to mark deprecation without breaking builds);
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b) "#warning" pragmas (allow to remind ourselves of errors without breaking builds)
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]
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)],
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[werror=$enableval], [werror="no"])
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if test x"$werror" = x"yes"
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then
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WERROR_FLAGS="-Werror"
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WERROR_FLAGS+=" -Wno-error=deprecated -Wno-error=deprecated-declarations"
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WERROR_FLAGS+=" -Wno-error=cpp" # "#warning"
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CFLAGS="$CFLAGS $WERROR_FLAGS"
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CPPFLAGS="$CPPFLAGS $WERROR_FLAGS"
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fi
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AC_MSG_RESULT([CFLAGS="$CFLAGS"])
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AC_MSG_RESULT([CPPFLAGS="$CPPFLAGS"])
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AC_OUTPUT([Makefile
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AC_OUTPUT([Makefile
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def_frame/Makefile
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def_frame/Makefile
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def_list/Makefile
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def_list/Makefile
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