May 2006 - Darwin-dev - lists.apple.com

Re: Is there a way to determine what default options are passed to g++?
by Eric Albert 26 May '06

26 May '06

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Is there a way to determine what default options are passed to g++?
by Garth Cummings 26 May '06

26 May '06

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Re: Is there a way to determine what default options are passed to g++?
by Martin Costabel 26 May '06

26 May '06

site_archiver(a)lists.apple.com Delivered-To: darwin-dev(a)lists.apple.com User-agent: Thunderbird 1.5.0.2 (Macintosh/20060308) Comrades, -- Martin _______________________________________________ Do not post admin requests to the list. They will be ignored. Darwin-dev mailing list (Darwin-dev(a)lists.apple.com) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/darwin-dev/site_archiver%40lists.app… Paul Archibald wrote: Does anyone know how to show the default options that are passed to gcc/g++? If you give the -v flag to g++, it shows you the exact commands that are passed to the assembler and linker. If you want to know the preprocessor flags, run "cpp -dM </dev/null". This email sent to site_archiver(a)lists.apple.com

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Re: Is there a way to determine what default options are passed to g++?
by Paul Archibald 26 May '06

26 May '06

site_archiver(a)lists.apple.com Delivered-To: darwin-dev(a)lists.apple.com On May 26, 2006, at 1:36 PM, Kevin Van Vechten wrote: - Kevin On May 26, 2006, at 12:30 PM, Paul Archibald wrote: Comrades, This is the compiler command from the makefile: _______________________________________________ Do not post admin requests to the list. They will be ignored. Darwin-dev mailing list (Darwin-dev(a)lists.apple.com) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/darwin-dev/site_archiver%40lists.app… Yes I checked the versions of gcc, both are 4.0.1, and the includes paths look the same. Same Xcode 2.2.1, installed on both machines the same day (the PPC was an upgrade). What do you mean by slightly different output? It'd help to know what differences you're seeing. Also, have you checked that both versions of gcc/g++ are the same (gcc -v)? That might account for subtle differences. Does anyone know how to show the default options that are passed to gcc/g++? I am building a universal binary, and I get slightly different output depending on whether I build it on my PPC Powerbook or this IntelMini loaner. I am really close, The Intel build works on the IntelMini and the PPC, but the PPC build only works on the PPC. I want the PPC build to be portable, too. $(TARGET): $(OBJECTS) g++ -arch i386 -arch ppc -isysroot /Developer/SDKs/ MacOSX10.4u.sdk -o $@ -dynamiclib -install_name $(DESTDIR)/$@ $^ strip -x $@ %.o: %.cpp g++ -arch i386 -arch ppc -isysroot /Developer/SDKs/ MacOSX10.4u.sdk -c -O2 -o $@ $^ -I /System/Library/Frameworks/ JavaVM.framework/Headers I think the fix is to add something to the options list that will force both compilers (Intel and PPC) to generate exactly the same output. I just don't know what that something is. Anybody have any idea? This email sent to site_archiver(a)lists.apple.com

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Re: Is there a way to determine what default options are passed to g++?
by Paul Archibald 26 May '06

26 May '06

site_archiver(a)lists.apple.com Delivered-To: darwin-dev(a)lists.apple.com I just wrote a lengthy response to Garth, which I will post later. On May 26, 2006, at 1:32 PM, Eric Albert wrote: On May 26, 2006, at 12:30 PM, Paul Archibald wrote: Hope this helps, Eric _______________________________________________ Do not post admin requests to the list. They will be ignored. Darwin-dev mailing list (Darwin-dev(a)lists.apple.com) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/darwin-dev/site_archiver%40lists.app… I wish I knew just what fails with the PPC-built lib, but it is a JNI lib that our Java app is trying to call into, and I don't know how to trace into a JNI from Xcode. Do you know how? My lib loads with Sysytem.loadLibrary(theJNILib), but the first call into it crashes with a signal 11 (SIGSEGV). Does anyone know how to show the default options that are passed to gcc/g++? I am building a universal binary, and I get slightly different output depending on whether I build it on my PPC Powerbook or this IntelMini loaner. I am really close, The Intel build works on the IntelMini and the PPC, but the PPC build only works on the PPC. I want the PPC build to be portable, too. I think you're trying to solve this in the wrong direction. Rather than looking at compiler options, it'd be good to start by figuring out what's not working in your PPC build when you run it on Intel. That'll help you know where to look to fix the problem. This email sent to site_archiver(a)lists.apple.com

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HFS or HFS+? That is the statfs question
by Stephane Sudre 26 May '06

26 May '06

site_archiver(a)lists.apple.com Delivered-To: darwin-dev(a)lists.apple.com _______________________________________________ Do not post admin requests to the list. They will be ignored. Darwin-dev mailing list (Darwin-dev(a)lists.apple.com) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/darwin-dev/site_archiver%40lists.app… With the statfs API you can know the kind of File System a file (or path) lives on. The problem is that this API returns "hfs" for an HFS+ (journalized should I add) volume. Is there a quick way to know this is actually a HFS+ File System (typical block size?). This email sent to site_archiver(a)lists.apple.com

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Re: Is there a way to determine what default options are passed to g++?
by Kevin Van Vechten 26 May '06

26 May '06

site_archiver(a)lists.apple.com Delivered-To: darwin-dev(a)lists.apple.com - Kevin On May 26, 2006, at 12:30 PM, Paul Archibald wrote: Comrades, This is the compiler command from the makefile: _______________________________________________ Do not post admin requests to the list. They will be ignored. Darwin-dev mailing list (Darwin-dev(a)lists.apple.com) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/darwin-dev/site_archiver%40lists.app… What do you mean by slightly different output? It'd help to know what differences you're seeing. Also, have you checked that both versions of gcc/g++ are the same (gcc -v)? That might account for subtle differences. Does anyone know how to show the default options that are passed to gcc/g++? I am building a universal binary, and I get slightly different output depending on whether I build it on my PPC Powerbook or this IntelMini loaner. I am really close, The Intel build works on the IntelMini and the PPC, but the PPC build only works on the PPC. I want the PPC build to be portable, too. $(TARGET): $(OBJECTS) g++ -arch i386 -arch ppc -isysroot /Developer/SDKs/MacOSX10.4u.sdk -o $@ -dynamiclib -install_name $(DESTDIR)/$@ $^ strip -x $@ %.o: %.cpp g++ -arch i386 -arch ppc -isysroot /Developer/SDKs/MacOSX10.4u.sdk -c -O2 -o $@ $^ -I /System/Library/Frameworks/JavaVM.framework/Headers I think the fix is to add something to the options list that will force both compilers (Intel and PPC) to generate exactly the same output. I just don't know what that something is. Anybody have any idea? This email sent to site_archiver(a)lists.apple.com

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Re: Is there a way to determine what default options are passed to g++?
by Eric Albert 26 May '06

26 May '06

site_archiver(a)lists.apple.com Delivered-To: darwin-dev(a)lists.apple.com On May 26, 2006, at 12:30 PM, Paul Archibald wrote: Hope this helps, Eric _______________________________________________ Do not post admin requests to the list. They will be ignored. Darwin-dev mailing list (Darwin-dev(a)lists.apple.com) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/darwin-dev/site_archiver%40lists.app… Does anyone know how to show the default options that are passed to gcc/g++? I am building a universal binary, and I get slightly different output depending on whether I build it on my PPC Powerbook or this IntelMini loaner. I am really close, The Intel build works on the IntelMini and the PPC, but the PPC build only works on the PPC. I want the PPC build to be portable, too. I think you're trying to solve this in the wrong direction. Rather than looking at compiler options, it'd be good to start by figuring out what's not working in your PPC build when you run it on Intel. That'll help you know where to look to fix the problem. This email sent to site_archiver(a)lists.apple.com

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Re: Is there a way to determine what default options are passed to g++?
by Garth Cummings 26 May '06

26 May '06

site_archiver(a)lists.apple.com Delivered-To: darwin-dev(a)lists.apple.com Hi Paul, On May 26, 2006, at 12:30 PM, Paul Archibald wrote: I doubt that is the problem. Also, what do you mean by "works" and "doesn't work"? Thanks, --gc ____________________________________________________________________ Garth Cummings gcummings(a)apple.com Sr. Software Engineer Apple Developer Technical Support <http://developer.apple.com/technicalsupport> _______________________________________________ Do not post admin requests to the list. They will be ignored. Darwin-dev mailing list (Darwin-dev(a)lists.apple.com) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/darwin-dev/site_archiver%40lists.app… I think the fix is to add something to the options list that will force both compilers (Intel and PPC) to generate exactly the same output. I just don't know what that something is. Anybody have any idea? Can you provide more details on the versions of the tools and headers you have installed on each machine? Or, as an easy test, upgrade to the just-released Xcode 2.3 on both machines and see if anything changes. This email sent to site_archiver(a)lists.apple.com

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Is there a way to determine what default options are passed to g++?
by Paul Archibald 26 May '06

26 May '06

site_archiver(a)lists.apple.com Delivered-To: darwin-dev(a)lists.apple.com Comrades, This is the compiler command from the makefile: Anybody have any idea? _______________________________________________ Do not post admin requests to the list. They will be ignored. Darwin-dev mailing list (Darwin-dev(a)lists.apple.com) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/darwin-dev/site_archiver%40lists.app… Does anyone know how to show the default options that are passed to gcc/g++? I am building a universal binary, and I get slightly different output depending on whether I build it on my PPC Powerbook or this IntelMini loaner. I am really close, The Intel build works on the IntelMini and the PPC, but the PPC build only works on the PPC. I want the PPC build to be portable, too. $(TARGET): $(OBJECTS) g++ -arch i386 -arch ppc -isysroot /Developer/SDKs/MacOSX10.4u.sdk - o $@ -dynamiclib -install_name $(DESTDIR)/$@ $^ strip -x $@ %.o: %.cpp g++ -arch i386 -arch ppc -isysroot /Developer/SDKs/MacOSX10.4u.sdk - c -O2 -o $@ $^ -I /System/Library/Frameworks/JavaVM.framework/Headers I think the fix is to add something to the options list that will force both compilers (Intel and PPC) to generate exactly the same output. I just don't know what that something is. This email sent to site_archiver(a)lists.apple.com

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