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| author | Ralf Wildenhues <Ralf.Wildenhues@gmx.de> | 2011-04-02 15:20:48 +0200 |
|---|---|---|
| committer | Ralf Wildenhues <Ralf.Wildenhues@gmx.de> | 2011-04-02 15:37:40 +0200 |
| commit | 8c2db1c128fbcee77530b813f45a575c37a0f10f (patch) | |
| tree | af63adb729684abe360d838875ba4dca27e0b4d9 /lib/autoconf/fortran.m4 | |
| parent | 1c3373c5f06e4c2d2551354f03b8da5c0f831040 (diff) | |
| download | autoconf-8c2db1c128fbcee77530b813f45a575c37a0f10f.tar.gz | |
New macro AC_FC_PP_DEFINE for the preprocessor define flag.
* lib/autoconf/fortran.m4 (AC_FC_PP_DEFINE): New macro.
* lib/autom4te.in (Automake-preselections): Preselect it.
* doc/autoconf.texi (Fortran Compiler): Document it.
* tests/local.at (_AT_CHECK_ENV): Do not complain about
FCFLAGS_F nor FC_DEFINE.
* NEWS: Update.
Signed-off-by: Ralf Wildenhues <Ralf.Wildenhues@gmx.de>
Diffstat (limited to 'lib/autoconf/fortran.m4')
| -rw-r--r-- | lib/autoconf/fortran.m4 | 50 |
1 files changed, 50 insertions, 0 deletions
diff --git a/lib/autoconf/fortran.m4 b/lib/autoconf/fortran.m4 index 1c313926..56488a97 100644 --- a/lib/autoconf/fortran.m4 +++ b/lib/autoconf/fortran.m4 @@ -1275,6 +1275,56 @@ AC_LANG_POP(Fortran)dnl ])# AC_FC_PP_SRCEXT +# AC_FC_PP_DEFINE([ACTION-IF-SUCCESS], [ACTION-IF-FAILURE = FAILURE]) +# ------------------------------------------------------------------- +# Find a flag to specify defines for preprocessed Fortran. Not all +# Fortran compilers use -D. Substitute FC_DEFINE with the result and +# call ACTION-IF-SUCCESS (defaults to nothing) if successful, and +# ACTION-IF-FAILURE (defaults to failing with an error message) if not. +# +# Known flags: +# IBM: -WF,-D +# Lahey/Fujitsu: -Wp,-D older versions??? +# f2c: -D or -Wc,-D +# others: -D +AC_DEFUN([AC_FC_PP_DEFINE], +[AC_LANG_PUSH([Fortran])dnl +ac_fc_pp_define_srcext_save=$ac_fc_srcext +AC_FC_PP_SRCEXT([F]) +AC_CACHE_CHECK([how to define symbols for preprocessed Fortran], + [ac_cv_fc_pp_define], +[ac_fc_pp_define_srcext_save=$ac_fc_srcext +ac_cv_fc_pp_define=unknown +ac_fc_pp_define_FCFLAGS_save=$FCFLAGS +for ac_flag in -D -WF,-D -Wp,-D -Wc,-D +do + FCFLAGS="$ac_fc_pp_define_FCFLAGS_save ${ac_flag}FOOBAR ${ac_flag}ZORK=42" + AC_COMPILE_IFELSE([AC_LANG_PROGRAM([], [[ +#ifndef FOOBAR + choke me +#endif +#if ZORK != 42 + choke me +#endif]])], + [ac_cv_fc_pp_define=$ac_flag]) + test x"$ac_cv_fc_pp_define" != xunknown && break +done +FCFLAGS=$ac_fc_pp_define_FCFLAGS_save +]) +ac_fc_srcext=$ac_fc_pp_define_srcext_save +if test "x$ac_cv_fc_pp_define" = xunknown; then + FC_DEFINE= + m4_default([$2], + [AC_MSG_ERROR([Fortran does not allow to define preprocessor symbols], 77)]) +else + FC_DEFINE=$ac_cv_fc_pp_define + $1 +fi +AC_SUBST([FC_DEFINE])dnl +AC_LANG_POP([Fortran])dnl +]) + + # AC_FC_FREEFORM([ACTION-IF-SUCCESS], [ACTION-IF-FAILURE = FAILURE]) # ------------------------------------------------------------------ # Look for a compiler flag to make the Fortran (FC) compiler accept |