On Thu, Jul 26, 2018 at 11:55 AM, Zack Weinberg <zackw@xxxxxxxxx> wrote: > On Thu, Jul 26, 2018 at 11:47 AM, Jeffrey Walton <noloader@xxxxxxxxx> wrote: >> >> AC_COMPILE_ELSEIF and AC_LINK_ELSEIF often misdetects which results in >> bad configurations and broken compiles on AIX with XL C/C++ and >> Solaris with SunCC. We found we can't use the macros. > > Could you please supply a short, self-contained configure.ac that > shows the problem? I don't think I understand the issue from your > description. Yes. I can also supply SSH access to a Solaris 11.3 machine with SunCC installed. I need authorized_keys file. You can get access to AIX and the IBM XL C/C++ compiler on the GCC compile farm at https://gcc.gnu.org/wiki/CompileFarm . I did not state it, but the highest SunCC -xarch at the moment is -xarch=aes. We are waiting for Sun to make -xarch=sha available. When GCC -msha or SunCC -xarch=sha is available we enable SHA code paths like https://github.com/weidai11/cryptopp/blob/master/sha-simd.cpp#L200 , which results in a failed compile on Soalris x86. Here's what SunCC and illegal -xarch options looks like under Autotools: $ autoreconf -f -i ... $ CXX=/opt/developerstudio12.6/bin/CC ./configure checking whether the C++ compiler works... yes checking for C++ compiler default output file name... a.out checking for suffix of executables... checking whether we are cross compiling... no checking for suffix of object files... o checking whether we are using the GNU C++ compiler... no checking whether /opt/developerstudio12.6/bin/CC accepts -g... yes checking for -xarch=sha... checking for gcc... gcc checking whether we are using the GNU C compiler... yes checking whether gcc accepts -g... yes checking for gcc option to accept ISO C89... none needed yes ******************** And SunCC: $ /opt/developerstudio12.6/bin/CC test.cxx -xarch=sha -o test.exe CC: Warning: illegal use of -xarch option, illegal value ignored: sha $ echo $? 0 ******************** $ cat configure.ac AC_INIT([Test], [1.0]) AC_PROG_CXX SAVED_CXXFLAGS="$CXXFLAGS" CXXFLAGS="-xarch=sha" AC_MSG_CHECKING([for -xarch=sha]) AC_COMPILE_IFELSE([AC_LANG_PROGRAM([])], [AC_MSG_RESULT([yes])], [AC_MSG_RESULT([no])] ) CXXFLAGS="$SAVED_CXXFLAGS" ******************** And the test driver: $ cat test.cxx #include <xmmintrin.h> int main (int argc, char* argv) { return 0; } _______________________________________________ Autoconf mailing list Autoconf@xxxxxxx https://lists.gnu.org/mailman/listinfo/autoconf
