[Buildroot] [PATCH 2/2] pixman: add patch to fix build issue with musl

[Eial Czerwacki <eial@scalemp.com>]

thanks, will try.

On 01/17/2016 04:40 PM, Thomas Petazzoni wrote:
> pixman fails to build with musl because <float.h> is included in
> assembler files, which doesn't work with the <float.h> provided by
> musl. This commit fixes that by patching pixman (patch submitted
> upstream).
>
> Reported-by: Eial Czerwacki <eial@scalemp.com>
> Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
> ---
>  ...an-private-include-float.h-only-in-C-code.patch | 46 ++++++++++++++++++++++
>  1 file changed, 46 insertions(+)
>  create mode 100644 package/pixman/0002-pixman-private-include-float.h-only-in-C-code.patch
>
> diff --git a/package/pixman/0002-pixman-private-include-float.h-only-in-C-code.patch b/package/pixman/0002-pixman-private-include-float.h-only-in-C-code.patch
> new file mode 100644
> index 0000000..455cebb
> --- /dev/null
> +++ b/package/pixman/0002-pixman-private-include-float.h-only-in-C-code.patch
> @@ -0,0 +1,46 @@
> +From 2a5b33fe5cb921993573392afac19185e224b49a Mon Sep 17 00:00:00 2001
> +From: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
> +Date: Sun, 17 Jan 2016 14:14:28 +0100
> +Subject: [PATCH] pixman-private: include <float.h> only in C code
> +
> +<float.h> is included unconditionally by pixman-private.h, which in
> +turn gets included by assembler files. Unfortunately, with certain C
> +libraries (like the musl C library), <float.h> cannot be included in
> +assembler files:
> +
> +  CCLD     libpixman-arm-simd.la
> +/home/test/buildroot/output/host/usr/arm-buildroot-linux-musleabihf/sysroot/usr/include/float.h: Assembler messages:
> +/home/test/buildroot/output/host/usr/arm-buildroot-linux-musleabihf/sysroot/usr/include/float.h:8: Error: bad instruction `int __flt_rounds(void)'
> +/home/test/buildroot/output/host/usr/arm-buildroot-linux-musleabihf/sysroot/usr/include/float.h: Assembler messages:
> +/home/test/buildroot/output/host/usr/arm-buildroot-linux-musleabihf/sysroot/usr/include/float.h:8: Error: bad instruction `int __flt_rounds(void)'
> +
> +It turns out however that <float.h> is not needed by assembly files,
> +so we move its inclusion within the #ifndef __ASSEMBLER__ condition,
> +which solves the problem.
> +
> +Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
> +---
> + pixman/pixman-private.h | 3 +--
> + 1 file changed, 1 insertion(+), 2 deletions(-)
> +
> +diff --git a/pixman/pixman-private.h b/pixman/pixman-private.h
> +index 73108a0..73a5414 100644
> +--- a/pixman/pixman-private.h
> ++++ b/pixman/pixman-private.h
> +@@ -1,5 +1,3 @@
> +-#include <float.h>
> +-
> + #ifndef PIXMAN_PRIVATE_H
> + #define PIXMAN_PRIVATE_H
> + 
> +@@ -30,6 +28,7 @@
> + #include <stdio.h>
> + #include <string.h>
> + #include <stddef.h>
> ++#include <float.h>
> + 
> + #include "pixman-compiler.h"
> + 
> +-- 
> +2.6.4
> +