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Re: Compiling toolchain for x86_64 linux on OSX - error when installing kernel headers

From: Waldemar Brodkorb <wbx at openadk dot org>
To: John Tipper <john_tipper at hotmail dot com>
Cc: "crossgcc at sourceware dot org" <crossgcc at sourceware dot org>
Date: Thu, 25 Aug 2016 21:02:16 +0200
Subject: Re: Compiling toolchain for x86_64 linux on OSX - error when installing kernel headers
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References: <VI1PR08MB0943C28A792ABA816D1D77CB99ED0@VI1PR08MB0943.eurprd08.prod.outlook.com>

Hi John,
John Tipper wrote,

> Hi All,
> 
> I'm trying to create a toolchain for x86_64 linux on a 64 bit Mac running OSX 10.9.5 and using crosstool-ng-1.22.0. I have tried building using a number of the samples ("x86_64-w64-mingw32,x86_64-pc-linux-gnu" and "x86_64-unknown-linux-gnu") but I am running into build errors, as shown below. I am not building the gold linker, nor am I attempting to link statically, and I am building on a case-sensitive file system. The build.log and config are shown after the error listing.
> 
> It looks as though the build environment is perhaps looking for OSX header files (within /usr/include) when installing/building the kernel headers, rather than Linux ones, but I don't know what to do to fix this.
> 
> Can anyone please offer advice for what I need to do to build successfully?  This has also been posted on stack overflow (http://stackoverflow.com/questions/39140110/crosstools-ng-compiling-toolchain-for-x86-64-linux-on-osx-error-when-installi), so feel free to answer there if you'd prefer.
> 
> [INFO ]  Installing kernel headers
> [EXTRA]    Installing kernel headers
> [ERROR]    /usr/include/bits/types.h:43:25: error: typedef redefinition with different types ('long' vs 'long long')
> [ERROR]    /usr/include/bits/types.h:44:27: error: typedef redefinition with different types ('unsigned long' vs 'unsigned long long')
> [ERROR]    /Volumes/CaseSensitiveLinux/ct-ng/.build/src/linux-3.12.50/arch/x86/tools/relocs.h:15:10: fatal error: 'endian.h' file not found
> [ERROR]    make[3]: *** [arch/x86/tools/relocs_32.o] Error 1

I think MacOS X support is incomplete. For x86_64 toolchain creation
you require to provide some endian.h.

In OpenADK I use:
http://cgit.openadk.org/cgi/cgit/openadk.git/tree/adk/include

Which is included via HOST_EXTRACFLAGS:
http://cgit.openadk.org/cgi/cgit/openadk.git/tree/mk/kernel-vars.mk

best regards
 Waldemar

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References:
- Compiling toolchain for x86_64 linux on OSX - error when installing kernel headers
  - From: John Tipper

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