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On 8/27/2010 11:18 AM, Charles Wilson wrote: > But...this one works. I'll try again, with some of the other options > and maybe sysroot support, but not until next week. > > I've attached my *working* recipe, based on Corinna's instructions. It > also includes the recipe for then building cygwin itself, and packaging > the results for installation on win32. The attached is a second recipe; this one builds a linux->cygwin gcc-4.5.0 compiler with sysroot support, as well as enabling libgomp. It differs from the "native" cygwin 4.5.0 compiler in the following ways (other than the obvious, of course): graphite is not enabled lto is not enabled To use this recipe, I recommend (a) modifying the various settings at the top as needed (b) cut and paste small sections (10 lines or so) into a terminal -- rather than attempting the "run" the recipe as a script. It's not that polished. Using the cross-compiler generated using this recipe, the "sysroot" support in libtool-2.2.11a passes its own tests (the cross-compiler built using the previous recipe, because it had no sysroot support, caused those tests to be skipped). I was able to rebuild cygwin itself using this compiler with no issues (except those related to -Werror; there are a number of files in cygwin that cause alias warnings). -- Chuck
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linux-to-cygwin-cross-gcc45-with-sysroot.txt
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