Paul Eggert wrote: > In reference to: > > http://lists.gnu.org/archive/html/autoconf-patches/2007-10/msg00017.html > > Bruno contributed that patch to Autoconf, dated 2007-05-21. > Bruno, was that patch derived from Steven's work? It was derived from these two comment lines found in Steven's macro: # Flags to try: -fopenmp (gcc), -openmp (icc), -mp (SGI & PGI), # -xopenmp (Sun), -omp (Tru64), -qsmp=omp (AIX), none You find the AC_C_OPENMP history here: http://cvs.savannah.gnu.org/viewvc/gettext/gettext-tools/m4/openmp.m4?hideattic=0&root=gettext&view=log http://cvs.savannah.gnu.org/viewvc/gnulib/gnulib/m4/openmp.m4?view=log http://lists.gnu.org/archive/html/autoconf/2007-05/msg00029.html Other than the list of compilers and options to try, there are no commonalities between http://lists.gnu.org/archive/html/autoconf/2007-05/msg00029.html and the code Steven's AX_OPENMP macro, because - I didn't want to try arbitrary options on arbitrary compilers, because the option "-openmp" causes the creation of a file "penmp" with most compilers. - I wanted the OPENMP_FLAGS to be empty if $CC $CFLAGS already supports OpenMP without any additional flags. - I wanted to check the _OPENMP macro, because according to the OpenMP spec, it is this macro which indicates OpenMP support in the compiler, not some library function. - The _AC_LANG_PREFIX business made Steven's code unintelligible to me (and the quotation rules around _AC_LANG_PREFIX are still black magic to me). > If so, how about the following patch to the Autoconf changelog? > > diff --git a/ChangeLog b/ChangeLog > index a5b43ae..0aff913 100644 > --- a/ChangeLog > +++ b/ChangeLog > @@ -626,6 +626,8 @@ > * NEWS: Mention AC_C_OPENMP. > * lib/autoconf/c.m4 (AC_C_OPENMP): New macro. > * doc/autoconf.texi (C Compiler): Document AC_C_OPENMP. > + Based in part on Steven G. Johnson's AX_OPENMP macro in the > + Autoconf macro archive. This is inaccurate. But you can write: Based in part on Steven G. Johnson's investigations for the AX_OPENMP macro in the Autoconf macro archive. Bruno _______________________________________________ Autoconf mailing list Autoconf@xxxxxxx http://lists.gnu.org/mailman/listinfo/autoconf
