Hi Ilya, On Wed, 2023-02-08 at 20:52 +0100, Ilya Leoshkevich wrote: > By default, clang produces .llvm_addrsig sections [1]. The GNU > toolchain does not know how to handle them yet [2], so just ask clang > not to generate them for the time being. > > [1] > https://llvm.org/docs/Extensions.html#sht-llvm-addrsig-section-address-significance-table > [2] https://gcc.gnu.org/bugzilla/show_bug.cgi?id=105625
That looks like a good generic configure check. Pushed. Thanks, Mark > Signed-off-by: Ilya Leoshkevich <i...@linux.ibm.com> > --- > configure.ac | 8 ++++++++ > 1 file changed, 8 insertions(+) > > diff --git a/configure.ac b/configure.ac > index 8fe8baee..7dc9be63 100644 > --- a/configure.ac > +++ b/configure.ac > @@ -588,6 +588,14 @@ CFLAGS="$old_CFLAGS"]) > AM_CONDITIONAL(HAVE_NO_PACKED_NOT_ALIGNED_WARNING, > [test "x$ac_cv_no_packed_not_aligned" != "xno"]) > > +AC_CACHE_CHECK([whether the compiler accepts -fno-addrsig], > ac_cv_fno_addrsig, [dnl > +old_CFLAGS="$CFLAGS" > +CFLAGS="$CFLAGS -fno-addrsig -Werror" > +AC_COMPILE_IFELSE([AC_LANG_SOURCE([])], > + ac_cv_fno_addrsig=yes, ac_cv_fno_addrsig=no) > +CFLAGS="$old_CFLAGS"]) > +AS_IF([test "x$ac_cv_fno_addrsig" = "xyes"], CFLAGS="$CFLAGS -fno-addrsig") > + > saved_LIBS="$LIBS" > AC_SEARCH_LIBS([argp_parse], [argp]) > LIBS="$saved_LIBS"
