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build-sys: add configure switch for -fsanitize=undefined

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--enable-undefined-sanitizer mirrors --enable-memory-sanitizer.
This commit is contained in:
Zbigniew Jędrzejewski-Szmek 2014-04-24 20:49:15 +02:00
parent dfd9cf7f0b
commit ae0ceefc2f
1 changed files with 20 additions and 3 deletions
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23
configure.ac
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@ -114,6 +114,23 @@ AS_IF([test "x$enable_address_sanitizer" = "xyes"], [
address_sanitizer_ldflags="-Wc,-fsanitize=address"
])
undefined_sanitizer_cflags=
undefined_sanitizer_cppflags=
undefined_sanitizer_ldflags=
AC_ARG_ENABLE(undefined-sanitizer, AS_HELP_STRING([--enable-undefined-sanitizer], [enable -fsanitize=undefined]))
AS_IF([test "x$enable_undefined_sanitizer" = "xyes"], [
CC_CHECK_FLAG_APPEND([with_us_cflags], [CFLAGS], [-fsanitize=undefined])
AS_IF([test -z "$with_us_cflags"],
[AC_MSG_ERROR([*** -fsanitize=undefined is not supported])])
undefined_sanitizer_cflags="$with_us_cflags -fno-omit-frame-pointer -DVALGRIND=1"
undefined_sanitizer_cppflags="-DVALGRIND=1"
undefined_sanitizer_ldflags="-Wc,-fsanitize=undefined"
])
sanitizer_cflags="$address_sanitizer_cflags $undefined_sanitizer_cflags"
sanitizer_cppflags="$address_sanitizer_cppflags $undefined_sanitizer_cppflags"
sanitizer_ldflags="$address_sanitizer_ldflags $undefined_sanitizer_ldflags"
CC_CHECK_FLAGS_APPEND([with_cflags], [CFLAGS], [\
-pipe \
-Wall \
@ -162,13 +179,13 @@ AS_CASE([$CFLAGS], [*-O[[12345\ ]]*],
[CC_CHECK_FLAGS_APPEND([with_cflags], [CFLAGS], [\
-flto])],
[AC_MSG_RESULT([skipping -flto, optimization not enabled])])
AC_SUBST([OUR_CFLAGS], "$with_cflags $address_sanitizer_cflags")
AC_SUBST([OUR_CFLAGS], "$with_cflags $sanitizer_cflags")
AS_CASE([$CFLAGS], [*-O[[12345\ ]]*],
[CC_CHECK_FLAGS_APPEND([with_cppflags], [CPPFLAGS], [\
-Wp,-D_FORTIFY_SOURCE=2])],
[AC_MSG_RESULT([skipping -D_FORTIFY_SOURCE, optimization not enabled])])
AC_SUBST([OUR_CPPFLAGS], "$with_cppflags $address_sanitizer_cppflags")
AC_SUBST([OUR_CPPFLAGS], "$with_cppflags $sanitizer_cppflags")
CC_CHECK_FLAGS_APPEND([with_ldflags], [LDFLAGS], [\
-Wl,--as-needed \
@ -177,7 +194,7 @@ CC_CHECK_FLAGS_APPEND([with_ldflags], [LDFLAGS], [\
-Wl,-z,relro \
-Wl,-z,now \
-Wl,-fuse-ld=gold])
AC_SUBST([OUR_LDFLAGS], "$with_ldflags $address_sanitizer_ldflags")
AC_SUBST([OUR_LDFLAGS], "$with_ldflags $sanitizer_ldflags")
AC_CHECK_SIZEOF(pid_t)
AC_CHECK_SIZEOF(uid_t)