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package/clamav: fix build with uClibc

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clamav wants to use backtrace, and decides whether it can use it if it
detects a glibc >= 2.1.

But uClibc does impersonate a glibc >= 2.1, so clamav concludes it is
possible to use backtrace. So it includes execinfo.h, which is missing
in our default uClibc config file.

So, just extend the test so that backtrace support is disable on uClibc,
unless it has been configured with backtrace support.

A far better solution would be to add a ./configure check for backtrace,
but this patch is sufficient enough.

Fixes:
    http://autobuild.buildroot.net/results/cff/cffa32fcedda735983d4805d6d4fa77844539b10/
    http://autobuild.buildroot.net/results/e0a/e0a765a94a538b0b936ea512f7aba0264fac6309/
    ...

Bugtracker: https://bugzilla.clamav.net/show_bug.cgi?id=11170

[Peter: add bugtracker URL as suggested by Bernd]
Signed-off-by: "Yann E. MORIN" <yann.morin.1998@free.fr>
Acked-by: Bernd Kuhls <bernd.kuhls@t-online.de>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
This commit is contained in:
Yann E. MORIN 2014-11-16 17:34:27 +01:00 committed by Peter Korsgaard
parent 081e9a9dc3
commit 85101d3741
1 changed files with 22 additions and 0 deletions
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22
package/clamav/clamav-0003-backtrace-uClibc.patch Normal file
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@ -0,0 +1,22 @@
mbox: do not use backtrace if using uClibc without backtrace support
Since uClibc can be configured without support for backtrace, disable
the backtrace if we are building with a uClibc that was built without
backtrace.
This is a bit hacky, and would greatly benefit from a test in ./configure
instead, but does nicely as a quick fix for now.
Signed-off-by: "Yann E. MORIN" <yann.morin.1998@free.fr>
diff -durN clamav-0.98.4.orig/libclamav/mbox.c clamav-0.98.4/libclamav/mbox.c
--- clamav-0.98.4.orig/libclamav/mbox.c 2014-05-21 17:25:05.000000000 +0200
+++ clamav-0.98.4/libclamav/mbox.c 2014-11-16 17:21:04.885383286 +0100
@@ -83,7 +83,7 @@
#include <features.h>
#endif
-#if __GLIBC__ == 2 && __GLIBC_MINOR__ >= 1
+#if __GLIBC__ == 2 && __GLIBC_MINOR__ >= 1 && !defined(__UCLIBC__) || defined(__UCLIBC_HAS_BACKTRACE__)
#define HAVE_BACKTRACE
#endif
#endif