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Diffstat (limited to 'contrib/gcc/doc/cppopts.texi')
| -rw-r--r-- | contrib/gcc/doc/cppopts.texi | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/contrib/gcc/doc/cppopts.texi b/contrib/gcc/doc/cppopts.texi index 024d255042ed..69738cc2202f 100644 --- a/contrib/gcc/doc/cppopts.texi +++ b/contrib/gcc/doc/cppopts.texi @@ -506,6 +506,22 @@ Search @var{dir} only for header files requested with @xref{Search Path}. @end ifset +@item -fdirectives-only +@opindex fdirectives-only +This option provides a simplified preprocessor to improve the +performance of distributed build systems such as distcc. It's +behavior depends on a number of other flags. + +If the @option{-E} option is enabled, it suppresses things like macro +expansion, trigraph conversion, and escaped newline splicing +outside of directives. All directives are processed normally, except that +macro definitions are output similar to the @option{-dD} option. + +If the @option{-fpreprocessed} option is enabled, it suppresses +predefinition of most builtin and command line macros. This +prevents duplicate definition of macros output with the @option{-E} +option. + @item -fdollars-in-identifiers @opindex fdollars-in-identifiers @anchor{fdollars-in-identifiers} |