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| -rw-r--r-- | make.texinfo | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/make.texinfo b/make.texinfo index 48c6e1b..85375bb 100644 --- a/make.texinfo +++ b/make.texinfo @@ -1137,6 +1137,17 @@ any that are out of date or don't exist. Only after it has tried to find a way to remake a makefile and failed, will @code{make} diagnose the missing makefile as a fatal error. +If you want @code{make} to simply ignore a makefile which does not exist +and cannot be remade, with no error message, use the @w{@code{-include}} +directive instead of @code{include}, like this: + +@example +-include @var{filenames}@dots{} +@end example + +This is acts like @code{include} in every way except that there is no +error (not even a warning) if any of the @var{filenames} do not exist. + @node MAKEFILES Variable, Remaking Makefiles, Include, Makefiles @section The Variable @code{MAKEFILES} @cindex makefile, and @code{MAKEFILES} variable @@ -7859,6 +7870,12 @@ The @samp{+=} syntax to append to the value of a variable comes from SunOS The syntax @w{@samp{@var{archive}(@var{mem1} @var{mem2}@dots{})}} to list multiple members in a single archive file comes from SunOS 4 @code{make}. @xref{Archive Members}. + +@item +The @code{-include} directive to include makefiles with no error for a +nonexistent file comes from SunOS 4 @code{make}. (But note that SunOS 4 +@code{make} does not allow multiple makefiles to be specified in one +@code{-include} directive.) @end itemize The remaining features are inventions new in GNU @code{make}: |