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From: Harlan S. <Har...@pf...> - 2003-06-06 01:05:38
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I'm never planning on doing that. I will be installing software using modules, and the dependency stuff must use the modules framework for seeing what is available. So in my case I need to do a suitable "module avail gmake" and see if there is at least 3.79 available. H -- > Parsing the output of 'gmake --version' isn't going to be easy if Mr Stallman > keeps changing the format of the version blurb. You could change the regexp t > o > > /gnu make (?:version )?(\S+)/i > > To solve the version numbering scheme problem, you can use the 'v' notation a > nd > string comparisons. example: > > $v = eval "v$1"; die if (($v cmp v3.78.6) < 0); > > > (of course, double up the $ if you put this in a makefile) > > The "v" notation is only available in perl 5.6.0 and after. It creates a stri > ng > of bytes (so it won't be useful for TeX's version counting...). It is useful > for generating IPv4 addresses too. > > -Mark > > > Mark Lakata, Staff Engineer 1225 Charleston Road voice 650-567-5170 > MIPS Technologies Mountain View CA 94043 fax 650-567-5002 > > On Thu, 5 Jun 2003, Ted Stern wrote: > > > On 4 Jun 2003, Mark Lakata wrote: > > > > > > Makefile.versiondep: FORCE > > > @(perl -e '($$v) = `gmake --version` =~/version (\S+),/; die "old > > > make detected, found $v, need 3.78\n" if $$v < 3.78' && touch $@ ) || ( r > m > > > -f $@; false ) > > > > The perl arithmetic comparison is fragile -- what about GNU make version li > nes > > that return as follows? > > > > GNU make 3.80 > > GNU Make version 3.79.1 > > > > Ted > > -- > > Ted Stern Applications Group > > Cray Inc. office: 206-701-2182 > > 411 First Avenue South, Suite 600 cell: 206-383-1049 > > Seattle, WA 98104-2860 FAX: 206-701-2500 > > > > Frango ut patefaciam -- I break that I may reveal > > (The Paleontological Society motto, equally apropos for debugging) > > |
