* lib/autoconf/fortran.m4 (AC_PROG_FC): Define `$GFC' to "yes" if the detected fortran compiler is a GNU compiler, define it to the empty string otherwise. This is mostly for consistency for what is done for the C, C++ and Fortran 77 compilers. * doc/automake.texi: Update. --- ChangeLog | 10 ++++++++++ doc/autoconf.texi | 2 ++ lib/autoconf/fortran.m4 | 5 +++++ 3 files changed, 17 insertions(+), 0 deletions(-)
diff --git a/ChangeLog b/ChangeLog index 1bf0196..e51f7d7 100644 --- a/ChangeLog +++ b/ChangeLog @@ -1,3 +1,13 @@ +2011-10-21 Stefano Lattarini <[email protected]> + + fortran: define $GFC to "yes" if $FC is a GNU compiler + * lib/autoconf/fortran.m4 (AC_PROG_FC): Define `$GFC' to "yes" if + the detected fortran compiler is a GNU compiler, define it to the + empty string otherwise. + This is mostly for consistency for what is done for the C, C++ + and Fortran 77 compilers. + * doc/automake.texi: Update. + 2011-10-13 Eric Blake <[email protected]> admin: mention recent copyright assignments diff --git a/doc/autoconf.texi b/doc/autoconf.texi index 2ab4599..b6dc67b 100644 --- a/doc/autoconf.texi +++ b/doc/autoconf.texi @@ -7931,6 +7931,8 @@ This macro may, alternatively, be invoked with an optional first argument which, if specified, must be a blank-separated list of Fortran compilers to search for, just as in @code{AC_PROG_F77}. +If using @code{gfortran} or @code{g77} (the GNU Fortran compilers), then +set the shell variable @code{GFC} to @samp{yes}. If the output variable @code{FCFLAGS} was not already set in the environment, then set it to @option{-g -02} for GNU @code{g77} (or @option{-O2} where @code{g77} does not accept @option{-g}). Otherwise, diff --git a/lib/autoconf/fortran.m4 b/lib/autoconf/fortran.m4 index 56488a9..e630f27 100644 --- a/lib/autoconf/fortran.m4 +++ b/lib/autoconf/fortran.m4 @@ -382,6 +382,11 @@ AC_ARG_VAR([FCFLAGS], [Fortran compiler flags])dnl _AC_ARG_VAR_LDFLAGS()dnl _AC_ARG_VAR_LIBS()dnl _AC_PROG_FC([$2], [$1]) +if test $ac_compiler_gnu = yes; then + GFC=yes +else + GFC= +fi AC_LANG_POP(Fortran)dnl ])# AC_PROG_FC -- 1.7.2.3
