On 12/4/25 12:06 PM, Joseph Myers wrote:
Add support in contrib/test_installed for more variables (via
associated command-line options to the script) that gcc/Makefile.in
can set:
* ALT_CC_UNDER_TEST, ALT_CXX_UNDER_TEST and COMPAT_OPTIONS are used in
compat testing (against the same or a different compiler).
* The libiconv variable is used for testing iconv support for
particular character sets, and defaults to -liconv if not set in
site.exp, which is wrong on systems with iconv in libc; keep the
default, but add an option to override this.
Note that the dg-require-iconv testing is currently bogus in a cross
environment, and this patch does nothing to address that. The tests
using dg-require-iconv actually care about character set support on
the *host*, for character conversions carried out in the compiler,
and the libiconv setting put in site.exp by gcc/Makefile.in is a
*host* library setting. But dg-require-iconv /
check_iconv_available tests availability when compiling, linking and
executing for the *target*. If the host and target have close
enough to the same OS, this may work by accident, but otherwise it
will incorrectly enable / disable these tests based on target
information (but using a libiconv setting designed for the host)
when it should be based on host information.
* test_installed (--with-alt-cc=, --with-alt-cxx=)
(--with-compat-options=, --with-libiconv=): New options.
OK.
jeff
