Running a 32bit backtrace test against a 64bit binary doesn't work. Only a 64bit binary can backtrace a 32bit binary. So disable the biarch check that inserts -m64 for a 32bit host.
https://sourceware.org/bugzilla/show_bug.cgi?id=24158 Signed-off-by: Mark Wielaard <m...@klomp.org> --- ChangeLog | 5 +++++ configure.ac | 2 -- m4/ChangeLog | 4 ++++ m4/biarch.m4 | 2 +- 4 files changed, 10 insertions(+), 3 deletions(-) diff --git a/ChangeLog b/ChangeLog index 2f46f903..3357f69b 100644 --- a/ChangeLog +++ b/ChangeLog @@ -1,3 +1,8 @@ +2021-03-20 Mark Wielaard <m...@klomp.org> + + * configure.ac: Remove -m64 on 32bit target comments for + utrace_BIARCH check. + 2021-03-14 Mark Wielaard <m...@klomp.org> * configure.ac: Use AS_HELP_STRING instead of AC_HELP_STRING. diff --git a/configure.ac b/configure.ac index 1aff9f30..2418d474 100644 --- a/configure.ac +++ b/configure.ac @@ -706,9 +706,7 @@ if test "$sys_user_has_user_regs" = "yes"; then fi # On a 64-bit host where can can use $CC -m32, we'll run two sets of tests. -# Likewise in a 32-bit build on a host where $CC -m64 works. utrace_BIARCH -# `$utrace_biarch' will be `-m64' even on an uniarch i386 machine. CC_BIARCH="$CC $utrace_biarch" AC_SUBST([CC_BIARCH]) diff --git a/m4/ChangeLog b/m4/ChangeLog index d4c3c28c..8729f58c 100644 --- a/m4/ChangeLog +++ b/m4/ChangeLog @@ -1,3 +1,7 @@ +2022-03-20 Mark Wielaard <m...@klomp.org> + + * biarch.m4: Don't check whether -m64 works for 32bit host. + 2022-03-14 Mark Wielaard <m...@klomp.org> * biarch.m4: Use AS_HELP_STRING instead of AC_HELP_STRING. diff --git a/m4/biarch.m4 b/m4/biarch.m4 index 68618473..c7baead7 100644 --- a/m4/biarch.m4 +++ b/m4/biarch.m4 @@ -34,7 +34,7 @@ AC_ARG_WITH([biarch], AS_IF([test $utrace_biarch_forced = yes], [dnl utrace_cv_cc_biarch=yes AC_MSG_NOTICE([enabling biarch tests regardless using $biarch_CC])], [dnl -AS_IF([test x$utrace_cv_CC_m32 != xnone], [dnl +AS_IF([test x$utrace_cv_CC_m32 != xnone -a x$utrace_cv_host64 != xno], [dnl AC_CACHE_CHECK([whether $biarch_CC makes executables we can run], utrace_cv_cc_biarch, [dnl save_CC="$CC" -- 2.30.2
