buildroot/package/libffi/0005-mips-use-__linux__-and-not-linux.patch
Mauro Condarelli 4852f05907 libffi: add patch to fix MIPS support
Building Python 3.x on MIPS with musl fails because the libffi code
uses a "#ifdef linux" test to decide if we're building on Linux or
not. When building with -std=c99, "linux" is not defined, so instead
of including <asm/sgidefs.h>, libffi's code tries to include
<sgidefs.h>, which doesn't exist on musl.

The right fix is to use __linux__, which is POSIX compliant, and
therefore defined even when -std=c99 is used.

Note that glibc and uClibc were not affected because they do provide a
<sgidefs.h> header in addition to the <asm/sgidefs.h> one.

Signed-off-by: Mauro Condarelli <mc5686@mclink.it>
[Thomas: reformat patch with Git, add a better commit log and description.]
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
2017-10-22 15:56:20 +02:00

38 lines
1.2 KiB
Diff

From 1f43e5edfd91bee80e518432b80db01f1bf226e3 Mon Sep 17 00:00:00 2001
From: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Date: Sun, 22 Oct 2017 15:02:11 +0200
Subject: [PATCH] mips: use __linux__ and not linux
The "linux" symbol is not POSIX compliant [1], and therefore not
defined when building with -std=c99. Due to this, the linux
conditional block doesn't get used on Linux when building Python 3.x
(which is built with -std=c99). To fix this, we use the POSIX
compliant __linux__ symbol, which is defined when -std=c99 is used.
This fixes the build of Python 3.x on MIPS/musl configuration, as it
makes sures that <asm/sgidefs.h> gets included and not <sgidefs.h>.
[1] https://sourceforge.net/p/predef/wiki/OperatingSystems/
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
---
src/mips/ffitarget.h | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/src/mips/ffitarget.h b/src/mips/ffitarget.h
index 717d659..6faa358 100644
--- a/src/mips/ffitarget.h
+++ b/src/mips/ffitarget.h
@@ -32,7 +32,7 @@
#error "Please do not include ffitarget.h directly into your source. Use ffi.h instead."
#endif
-#ifdef linux
+#ifdef __linux__
# include <asm/sgidefs.h>
#elif defined(__rtems__)
/*
--
2.13.6