* best way to prevent a cygwin build? @ 2011-12-02 7:46 Paul Allen Newell 2011-12-02 9:47 ` Csaba Raduly 2011-12-02 17:39 ` Warren Young 0 siblings, 2 replies; 5+ messages in thread From: Paul Allen Newell @ 2011-12-02 7:46 UTC (permalink / raw) To: cygwin; +Cc: pnewell Dear Cygwin: I have a network of Fedora machines and WinXP running Cygwin. Most of the projects I work on can be compiled/linked/run under both, but there are exceptions. As in Maya ... I am not happy with having to run two separate source trees and would like a way (as in "best standard") to add something to any Maya makefile which will prevent execution if it is being compiled on Cygwin. The best I have been able to come up with is a check under each make directive, but that's alot of exceptions where I would think only one would be necessary. I searched the GNU make docs and googled for such, but the best I could see were bailout rules under a given make rule directive. I can find out whether I need to bail by the test "ifeq (Cygwin, $(shell uname -o))" but can't figure out a way to have the makefile ask this question once for the entire set of make directives in it. Any suggestions? Thanks, Paul -- Problem reports: http://cygwin.com/problems.html FAQ: http://cygwin.com/faq/ Documentation: http://cygwin.com/docs.html Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple ^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: best way to prevent a cygwin build? 2011-12-02 7:46 best way to prevent a cygwin build? Paul Allen Newell @ 2011-12-02 9:47 ` Csaba Raduly 2011-12-02 18:50 ` Dave Korn 2011-12-02 17:39 ` Warren Young 1 sibling, 1 reply; 5+ messages in thread From: Csaba Raduly @ 2011-12-02 9:47 UTC (permalink / raw) To: cygwin; +Cc: pnewell On Fri, Dec 2, 2011 at 8:46 AM, Paul Allen Newell wrote: > Dear Cygwin: > > I have a network of Fedora machines and WinXP running Cygwin. Most of the > projects I work on can be compiled/linked/run under both, but there are > exceptions. As in Maya ... > > I am not happy with having to run two separate source trees and would like a > way (as in "best standard") to add something to any Maya makefile which will > prevent execution if it is being compiled on Cygwin. The best I have been > able to come up with is a check under each make directive, but that's alot > of exceptions where I would think only one would be necessary. > > I searched the GNU make docs and googled for such, but the best I could see > were bailout rules under a given make rule directive. I can find out whether > I need to bail by the test "ifeq (Cygwin, $(shell uname -o))" but can't > figure out a way to have the makefile ask this question once for the entire > set of make directives in it. ifeq (Cygwin, $(shell uname -o)) PLATFORM := CYGWIN endif . . . ifeq ($(PLATFORM), CYGWIN) # Cygwin-specific stuff endif -- GCS a+ e++ d- C++ ULS$ L+$ !E- W++ P+++$ w++$ tv+ b++ DI D++ 5++ The Tao of math: The numbers you can count are not the real numbers. Life is complex, with real and imaginary parts. "Ok, it boots. Which means it must be bug-free and perfect. " -- Linus Torvalds "People disagree with me. I just ignore them." -- Linus Torvalds -- Problem reports: http://cygwin.com/problems.html FAQ: http://cygwin.com/faq/ Documentation: http://cygwin.com/docs.html Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple ^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: best way to prevent a cygwin build? 2011-12-02 9:47 ` Csaba Raduly @ 2011-12-02 18:50 ` Dave Korn 2011-12-03 0:34 ` [SOLVED:] " Paul Allen Newell 0 siblings, 1 reply; 5+ messages in thread From: Dave Korn @ 2011-12-02 18:50 UTC (permalink / raw) To: cygwin On 02/12/2011 09:47, Csaba Raduly wrote: > On Fri, Dec 2, 2011 at 8:46 AM, Paul Allen Newell wrote: >> I am not happy with having to run two separate source trees and would like a >> way (as in "best standard") to add something to any Maya makefile which will >> prevent execution if it is being compiled on Cygwin. The best I have been >> able to come up with is a check under each make directive, but that's alot >> of exceptions where I would think only one would be necessary. >> >> I searched the GNU make docs and googled for such, but the best I could see >> were bailout rules under a given make rule directive. I can find out whether >> I need to bail by the test "ifeq (Cygwin, $(shell uname -o))" but can't >> figure out a way to have the makefile ask this question once for the entire >> set of make directives in it. > > ifeq (Cygwin, $(shell uname -o)) > PLATFORM := CYGWIN > endif Well, in this particular case: ifeq (Cygwin, $(shell uname -o)) $(error This project does not build in Cygwin) endif Can be placed anywhere in the makefile, no need to modify the build rules. cheers, DaveK -- Problem reports: http://cygwin.com/problems.html FAQ: http://cygwin.com/faq/ Documentation: http://cygwin.com/docs.html Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple ^ permalink raw reply [flat|nested] 5+ messages in thread
* [SOLVED:] Re: best way to prevent a cygwin build? 2011-12-02 18:50 ` Dave Korn @ 2011-12-03 0:34 ` Paul Allen Newell 0 siblings, 0 replies; 5+ messages in thread From: Paul Allen Newell @ 2011-12-03 0:34 UTC (permalink / raw) To: cygwin; +Cc: pnewell On 12/2/2011 10:49 AM, Dave Korn wrote: > > Well, in this particular case: > > ifeq (Cygwin, $(shell uname -o)) > $(error This project does not build in Cygwin) > endif > > Can be placed anywhere in the makefile, no need to modify the build rules. > > cheers, > DaveK > > Csaba, Warren, and Dave: Thanks for all of your replies. The syntax/line: +++ $(error This project does not build in Cygwin) +++ is exactly what I was looking for as I didn't know how to force an exit. I just tried it out and it works like a champ. I also looked it up in GNU make man pages and it is there ... I don't know how I missed it last night as I "thought" I checked for error. My oversight on missing it, it was probably too late in the evening. Paul -- Problem reports: http://cygwin.com/problems.html FAQ: http://cygwin.com/faq/ Documentation: http://cygwin.com/docs.html Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple ^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: best way to prevent a cygwin build? 2011-12-02 7:46 best way to prevent a cygwin build? Paul Allen Newell 2011-12-02 9:47 ` Csaba Raduly @ 2011-12-02 17:39 ` Warren Young 1 sibling, 0 replies; 5+ messages in thread From: Warren Young @ 2011-12-02 17:39 UTC (permalink / raw) To: Cygwin-L On 12/2/2011 12:46 AM, Paul Allen Newell wrote: > > I am not happy with having to run two separate source trees and would > like a way (as in "best standard") to add something to any Maya makefile > which will prevent execution if it is being compiled on Cygwin. You might get better answers if you give an example of what you mean by "prevent execution". Not because we don't know what that means in general, but because it *is* too general. For example, if what you were after is to have some programs in a system compiled conditionally, Automake + Autoconf makes that easy: https://www.gnu.org/s/hello/manual/automake/Conditional-Programs.html If you want something else suppressed, the answer might be different. Generally speaking, any time you want to do some up-front tests for platform compatibility issues that affect how a program gets built, Autoconf is probably a good answer. It is not a pretty tool, but it's one of those tools that keeps getting reinvented poorly, so it remains the most popular out of lack of better alternatives. On one of my projects, I use another Automake competitor, Bakefile. Bakefile builds Autoconf Makefile.in files, generic GNU Makefiles, Visual C++ project files, Xcode project files, etc., all from a single high-level description of what you want built. You can include things conditionally based on platform or pretty much any criterion you can code up in a Python extension to Bakefile. Bakefile is not in the Cygwin package repo, however, partly because it doesn't build cleanly on Cygwin. The native Windows port works just fine with Cygwin, though. You might also look at cmake, which competes with the Autotools and Bakefile, and *is* in the Cygwin package repo. I can't tell you anything more about it. -- Problem reports: http://cygwin.com/problems.html FAQ: http://cygwin.com/faq/ Documentation: http://cygwin.com/docs.html Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple ^ permalink raw reply [flat|nested] 5+ messages in thread
end of thread, other threads:[~2011-12-03 0:34 UTC | newest] Thread overview: 5+ messages (download: mbox.gz / follow: Atom feed) -- links below jump to the message on this page -- 2011-12-02 7:46 best way to prevent a cygwin build? Paul Allen Newell 2011-12-02 9:47 ` Csaba Raduly 2011-12-02 18:50 ` Dave Korn 2011-12-03 0:34 ` [SOLVED:] " Paul Allen Newell 2011-12-02 17:39 ` Warren Young
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