From: maxice8 <thinkabit.ukim@gmail.com>
Date: Sat, 6 Oct 2018 00:23:45 +0000 (-0300)
Subject: don't assume __linux__ means __GLIBC__ on BACKTRACES_ENABLE
X-Git-Tag: v1.3.7~10^2
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=refs%2Fpull%2F1356%2Fhead;p=thirdparty%2Fzstd.git

don't assume __linux__ means __GLIBC__ on BACKTRACES_ENABLE

check for __GLIBC__ instead of __linux__ as musl libc doesn't provide
execinfo.h

fixes compilation on Alpine Linux and Void Linux musl arches.
---

diff --git a/programs/fileio.c b/programs/fileio.c
index ed3a29cda..1a73a75e4 100644
--- a/programs/fileio.c
+++ b/programs/fileio.c
@@ -21,7 +21,7 @@
 #endif
 
 #if !defined(BACKTRACES_ENABLE) && \
-   (defined(__linux__) || (defined(__APPLE__) && defined(__MACH__)) )
+   (defined(__GLIBC__) || (defined(__APPLE__) && defined(__MACH__)) )
 #  define BACKTRACES_ENABLE 1
 #endif