share/mk/bsd.sanitizer.mk

   1 .include <bsd.opts.mk>
   2
   3 _use_sanitizers=        no
   4 # Add the necessary sanitizer flags if requested
   5 .if ${MK_ASAN} == "yes" && ${NO_SHARED:Uno:tl} == "no"
   6 SANITIZER_CFLAGS+=      -fsanitize=address -fPIC
   7 # TODO: remove this once all basic errors have been fixed:
   8 # https://github.com/google/sanitizers/wiki/AddressSanitizer#faq
   9 SANITIZER_CFLAGS+=      -fsanitize-recover=address
  10 SANITIZER_LDFLAGS+=     -fsanitize=address
  11 _use_sanitizers=        yes
  12 .endif # ${MK_ASAN} == "yes"
  13
  14 .if ${MK_UBSAN} == "yes" && ${NO_SHARED:Uno:tl} == "no"
  15 # Unlike the other sanitizers, UBSan could also work for static libraries.
  16 # However, this currently results in linker errors (even with the
  17 # -fsanitize-minimal-runtime flag), so only enable it for dynamically linked
  18 # code for now.
  19 SANITIZER_CFLAGS+=      -fsanitize=undefined
  20 SANITIZER_CFLAGS+=      -fsanitize-recover=undefined
  21 SANITIZER_LDFLAGS+=     -fsanitize=undefined
  22 _use_sanitizers=        yes
  23 .endif # ${MK_UBSAN} == "yes"
  24
  25 .if !defined(BOOTSTRAPPING) && ${_use_sanitizers} != "no" && \
  26     ${COMPILER_TYPE} != "clang"
  27 .error "Sanitizer instrumentation currently only supported with clang"
  28 .endif
  29
  30 # For libraries we only instrument the shared and PIE libraries by setting
  31 # SHARED_CFLAGS instead of CFLAGS. We do this since static executables are not
  32 # compatible with the santizers (interceptors do not work).
  33 .if ${_use_sanitizers} != "no"
  34 .include "../../lib/libclang_rt/compiler-rt-vars.mk"
  35 .if target(__<bsd.lib.mk>__)
  36 SHARED_CFLAGS+= ${SANITIZER_CFLAGS}
  37 SOLINKOPTS+=    ${SANITIZER_LDFLAGS}
  38 LDFLAGS:=       ${LDFLAGS:N-Wl,-no-undefined:N-Wl,--no-undefined}
  39 .else
  40 CFLAGS+=        ${SANITIZER_CFLAGS}
  41 LDFLAGS+=       ${SANITIZER_LDFLAGS}
  42 .endif
  43 .endif # ${_use_sanitizers} != "no"