On 4/8/2004 6:22 PM, Ken Williams wrote:
Anyone know how widespread this 'MAKEFLAGS' thingy is? At worst, I
guess people whose 'make's don't provide it will just be stuck with the
existing behavior.
From the dmake manpage:
MFLAGS Is the list of flags that were given on
the command line including a leading
switch character. The -f flag is not
included in this list.
MAKEFLAGS Is the same as $(MFLAGS) but has no lead-
ing switch character. (ie. MFLAGS =
-$(MAKEFLAGS))
Microsoft apparently doesn't provide documentation for nmake, but
nmake /p | grep MAKEFLAGS
MAKEFLAGS = P
so it /appears/ to follow the convention.
And GNU make:
Flags such as `-s' and `-k' are passed automatically to the
sub-`make' through the variable `MAKEFLAGS'. This variable is set up
automatically by `make' to contain the flag letters that `make'
received. Thus, if you do `make -ks' then `MAKEFLAGS' gets the value
`ks'.
As a consequence, every sub-`make' gets a value for `MAKEFLAGS' in
its environment. In response, it takes the flags from that value and
processes them as if they had been given as arguments. *Note Summary
of Options: Options Summary.
Likewise variables defined on the command line are passed to the
sub-`make' through `MAKEFLAGS'. Words in the value of `MAKEFLAGS' that
contain `=', `make' treats as variable definitions just as if they
appeared on the command line. *Note Overriding Variables: Overriding.
Randy.
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