Found this one lurking around in one of my trees. It does not solve the actual issue of John that hppa64-hp-hpux11.11 does not have an __int128 alias integer(kind=16) type. The latter is required for OpenMP's omp_depend_kind as per implementation choice is has to be large enough to store two pointers (2*sizeof(void*)).
However, when thinking about the check again: It does not make sense to break the build if only C/C++ is enabled and Fortran disabled. While that probably has no real-world impact, I still think it makes sense to fix it. OK for mainline and GCC 11? Tobias ----------------- Siemens Electronic Design Automation GmbH; Anschrift: Arnulfstraße 201, 80634 München; Gesellschaft mit beschränkter Haftung; Geschäftsführer: Thomas Heurung, Frank Thürauf; Sitz der Gesellschaft: München; Registergericht München, HRB 106955
libgomp: Only check for 2*sizeof(void*) int type with Fortran [PR96661] The depend type is a struct with two pointer members for C/C++ - but for Fortran OpenMP requires an integer type with kind = omp_depend_kind. Thus, libgomp's configure checks that an integer type/kind with size 2*sizeof(void*) is available. However, this integer type/kind is not needed when building without Fortran support. Thus, only check this when Fortran is enabled. libgomp/ PR libgomp/96661 * configure.ac: Only check for int-type = 2*size_t support when building with Fortran support. * configure: Regenerate. diff --git a/libgomp/configure b/libgomp/configure index 6161da579c0..4bc9b381c5c 100755 --- a/libgomp/configure +++ b/libgomp/configure @@ -17007,13 +17007,15 @@ fi if test $OMP_NEST_LOCK_25_SIZE -gt 8 || test $OMP_NEST_LOCK_25_ALIGN -gt $OMP_NEST_LOCK_25_SIZE; then OMP_NEST_LOCK_25_KIND=8 fi -if test $OMP_DEPEND_KIND -eq 16; then - if test $OMP_INT128_SIZE -ne 16; then - as_fn_error $? "unsupported system, cannot find Fortran int kind=16, needed for omp_depend_kind" "$LINENO" 5 - fi -else - if test $OMP_DEPEND_KIND -ne 8; then - as_fn_error $? "unsupported system, cannot find Fortran integer kind for omp_depend_kind" "$LINENO" 5 +if test "$ac_cv_fc_compiler_gnu" = yes; then + if test $OMP_DEPEND_KIND -eq 16; then + if test $OMP_INT128_SIZE -ne 16; then + as_fn_error $? "unsupported system, cannot find Fortran int kind=16, needed for omp_depend_kind" "$LINENO" 5 + fi + else + if test $OMP_DEPEND_KIND -ne 8; then + as_fn_error $? "unsupported system, cannot find Fortran integer kind for omp_depend_kind" "$LINENO" 5 + fi fi fi diff --git a/libgomp/configure.ac b/libgomp/configure.ac index 7df80a32765..bfb613b91f0 100644 --- a/libgomp/configure.ac +++ b/libgomp/configure.ac @@ -438,13 +438,15 @@ fi if test $OMP_NEST_LOCK_25_SIZE -gt 8 || test $OMP_NEST_LOCK_25_ALIGN -gt $OMP_NEST_LOCK_25_SIZE; then OMP_NEST_LOCK_25_KIND=8 fi -if test $OMP_DEPEND_KIND -eq 16; then - if test $OMP_INT128_SIZE -ne 16; then - AC_MSG_ERROR([unsupported system, cannot find Fortran int kind=16, needed for omp_depend_kind]) - fi -else - if test $OMP_DEPEND_KIND -ne 8; then - AC_MSG_ERROR([unsupported system, cannot find Fortran integer kind for omp_depend_kind]) +if test "$ac_cv_fc_compiler_gnu" = yes; then + if test $OMP_DEPEND_KIND -eq 16; then + if test $OMP_INT128_SIZE -ne 16; then + AC_MSG_ERROR([unsupported system, cannot find Fortran int kind=16, needed for omp_depend_kind]) + fi + else + if test $OMP_DEPEND_KIND -ne 8; then + AC_MSG_ERROR([unsupported system, cannot find Fortran integer kind for omp_depend_kind]) + fi fi fi
