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author | Marc-André Lureau <marcandre.lureau@redhat.com> | 2018-01-16 16:11:51 +0100 |
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committer | Paolo Bonzini <pbonzini@redhat.com> | 2018-02-07 14:09:20 +0100 |
commit | 247724cb302af5d70c8853154b640dfabf2bbb56 (patch) | |
tree | 1c84b3617d731d0e5c804b5f925b6c7b202aad9e | |
parent | 6c549dc14113a8a389ef6cf8c9078df66e208ebd (diff) | |
download | qemu-247724cb302af5d70c8853154b640dfabf2bbb56.zip qemu-247724cb302af5d70c8853154b640dfabf2bbb56.tar.gz qemu-247724cb302af5d70c8853154b640dfabf2bbb56.tar.bz2 |
build-sys: add --enable-sanitizers
Typical slowdown introduced by AddressSanitizer is 2x.
UBSan shouldn't have much impact on runtime cost.
Enable it by default when --enable-debug, unless --disable-sanitizers.
Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Message-Id: <20180116151152.4040-3-marcandre.lureau@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
-rwxr-xr-x | configure | 30 |
1 files changed, 30 insertions, 0 deletions
@@ -342,6 +342,7 @@ rdma="" gprof="no" debug_tcg="no" debug="no" +sanitizers="no" fortify_source="" strip_opt="yes" tcg_interpreter="no" @@ -993,6 +994,10 @@ for opt do strip_opt="no" fortify_source="no" ;; + --enable-sanitizers) sanitizers="yes" + ;; + --disable-sanitizers) sanitizers="no" + ;; --enable-sparse) sparse="yes" ;; --disable-sparse) sparse="no" @@ -1474,6 +1479,7 @@ Advanced options (experts only): --firmwarepath=PATH search PATH for firmware files --with-confsuffix=SUFFIX suffix for QEMU data inside datadir/libdir/sysconfdir [$confsuffix] --enable-debug enable common debug build options + --enable-sanitizers enable default sanitizers --disable-strip disable stripping binaries --disable-werror disable compilation abort on warning --disable-stack-protector disable compiler-provided stack protection @@ -5201,6 +5207,23 @@ if compile_prog "" "" ; then fi ########################################## +# checks for sanitizers + +write_c_skeleton + +have_asan=no +have_ubsan=no + +if test "$sanitizers" = "yes" ; then + if compile_prog "$CPU_CFLAGS -Werror -fsanitize=address" ""; then + have_asan=yes + fi + if compile_prog "$CPU_CFLAGS -Werror -fsanitize=undefined" ""; then + have_ubsan=yes + fi +fi + +########################################## # End of CC checks # After here, no more $cc or $ld runs @@ -5224,6 +5247,13 @@ else CFLAGS="-O2 $CFLAGS" fi +if test "$have_asan" = "yes"; then + CFLAGS="-fsanitize=address $CFLAGS" +fi +if test "$have_ubsan" = "yes"; then + CFLAGS="-fsanitize=undefined $CFLAGS" +fi + ########################################## # Do we have libnfs if test "$libnfs" != "no" ; then |