Date: Thu, 1 Mar 2018 22:12:26 +0100 From: EJ <koffieyahoo@...il.com> To: musl@...ts.openwall.com Subject: Re: Generating headers for a specific target Hi Rich, > On 1 Mar 2018, at 21:59, Rich Felker <dalias@...c.org> wrote: > > On Thu, Mar 01, 2018 at 09:49:42PM +0100, EJ wrote: >> Hello, >> >> Is there a way to generate the headers for a specific target without >> having access to the target or a cross-compiler for the target? >> >> I’m not interested in compiling must, just in a complete set of header files. > > Yes, with a few caveats. Keep in mind that for archs with subarchs, > there will be preprocessor conditionals in the bits headers which > depend on predefined macros from the compiler, so you can't > use/process the headers without knowing the values of those macros. Understood. I’m still planning to run the headers through a properly configured compiler fornt-end, so that shouldn’t be a problem. > With that said, something like this should work from a clean tree: > > make includedir=/where/you/want/them ARCH=whatever install-headers > > or out-of-tree in a clean dir: > > make -f /path/to/musl/Makefile srcdir=/path/to/musl \ > includedir=/where/you/want/them ARCH=whatever install-headers > > filling in ARCH=whatever with the musl name for the target arch (not > including the subarch part). The above works like a charm. > The above make invocations are not entirely documented/public > interfaces, but are probably 90% so and unlikely to change/break in > practice. It might be a good idea to check that they still work with > new versions when upgrading musl though. Understandable. Thanks for your quick and informative response!
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