| From 1fc5444f5620670bb9d293be4f92df59661e1810 Mon Sep 17 00:00:00 2001 |
| From: Thomas Petazzoni <thomas.petazzoni@free-electrons.com> |
| Date: Mon, 20 Feb 2017 23:31:24 +0100 |
| Subject: [PATCH] kerncompat.h: define BTRFS_DISABLE_BACKTRACE when building |
| with uClibc |
| |
| uClibc does not provide backtrace() nor <execinfo.h>. When building |
| btrfs-progs, passing --disable-backtrace is enough to make it build with |
| uClibc. But once btrfs-progs is installed and another program/library |
| includes kerncompat.h, it fails to build with uClibc, because |
| BTRFS_DISABLE_BACKTRACE is not defined. |
| |
| The most correct fix for this would be to have kerncompat.h generated |
| from kerncompat.h.in during the btrfs-progs build process, and tuned |
| depending on autoconf/automake variables. But as a quick fix that |
| follows the current strategy, we simply tweak the existing __GLIBC__ |
| conditional. Indeed, uClibc pretends to be glibc and defines __GLIBC__, |
| but it does not replace it completely, hence the need to define |
| BTRFS_DISABLE_BACKTRACE when __GLIBC__ is not defined *or* when |
| __UCLIBC__ is defined. |
| |
| Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com> |
| --- |
| kerncompat.h | 2 +- |
| 1 file changed, 1 insertion(+), 1 deletion(-) |
| |
| diff --git a/kerncompat.h b/kerncompat.h |
| index 0f207b7..e47d164 100644 |
| --- a/kerncompat.h |
| +++ b/kerncompat.h |
| @@ -32,7 +32,7 @@ |
| |
| #include <features.h> |
| |
| -#ifndef __GLIBC__ |
| +#if !defined(__GLIBC__) || defined(__UCLIBC__) |
| #ifndef BTRFS_DISABLE_BACKTRACE |
| #define BTRFS_DISABLE_BACKTRACE |
| #endif |
| -- |
| 2.7.4 |
| |
