Your message dated Sat, 06 Jun 2015 13:11:11 +0100
with message-id <[email protected]>
and subject line Fix released with 8.1 point release
has caused the Debian Bug report #784383,
regarding jessie-pu: package libav/6:11.3-1+deb8u1
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--
784383: http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=784383
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--- Begin Message ---
Package: release.debian.org
Severity: normal
Tags: jessie
User: [email protected]
Usertags: pu
I'd like to fix #783082 in jessie.
Unfortunately just passing the correct value to --cpu is not enough as this
causes the build to fail due gcc stumbling over some assembler code. So we also
need to disable some assembler code and use the generic C implementation
instead.
The changelog is:
libav (6:11.3-1+deb8u1) jessie; urgency=medium
* Fix use of illegal instruction on i586. (Closes: #783082)
- debian/confflags: Pass correct value to --cpu. Thanks to Bernhard
Übelacker for the patch.
- debian/patches:
+ 01-configure-disable-i686-for-i586.patch: Upstream patch to disable
i686 instructions on i586.
+ 02-configure-disable-ebx-gcc-4.9.patch: Workaround build failure with
gcc 4.9 and newer by disabling the use of ebx in handwritten assembler
code. Thanks to Bernhard Übelacker for the initial patch.
-- Sebastian Ramacher <[email protected]> Tue, 05 May 2015 21:59:47 +0200
Full debdiff is attached.
Cheers
--
Sebastian Ramacher
diff -Nru libav-11.3/debian/changelog libav-11.3/debian/changelog
--- libav-11.3/debian/changelog 2015-03-13 23:27:29.000000000 +0100
+++ libav-11.3/debian/changelog 2015-05-05 22:05:20.000000000 +0200
@@ -1,3 +1,17 @@
+libav (6:11.3-1+deb8u1) jessie; urgency=medium
+
+ * Fix use of illegal instruction on i586. (Closes: #783082)
+ - debian/confflags: Pass correct value to --cpu. Thanks to Bernhard
+ Übelacker for the patch.
+ - debian/patches:
+ + 01-configure-disable-i686-for-i586.patch: Upstream patch to disable
+ i686 instructions on i586.
+ + 02-configure-disable-ebx-gcc-4.9.patch: Workaround build failure with
+ gcc 4.9 and newer by disabling the use of ebx in handwritten assembler
+ code. Thanks to Bernhard Übelacker for the initial patch.
+
+ -- Sebastian Ramacher <[email protected]> Tue, 05 May 2015 21:59:47 +0200
+
libav (6:11.3-1) unstable; urgency=medium
* New upstream release fixing multiple security issues.
diff -Nru libav-11.3/debian/confflags libav-11.3/debian/confflags
--- libav-11.3/debian/confflags 2015-01-17 19:25:07.000000000 +0100
+++ libav-11.3/debian/confflags 2015-05-05 21:55:15.000000000 +0200
@@ -180,7 +180,7 @@
shared_build_confflags += --disable-static
# i386 shared builds must be optimized for 586, cf. #728928, #688384
ifeq ($(DEB_HOST_ARCH),i386)
-shared_build_confflags += --cpu=586
+shared_build_confflags += --cpu='i586'
endif
## specific to arm architectures
diff -Nru libav-11.3/debian/gbp.conf libav-11.3/debian/gbp.conf
--- libav-11.3/debian/gbp.conf 2015-01-17 19:25:07.000000000 +0100
+++ libav-11.3/debian/gbp.conf 2015-05-05 21:55:01.000000000 +0200
@@ -1,6 +1,6 @@
[DEFAULT]
-upstream-branch = upstream
-debian-branch = master
+upstream-branch = upstream.jessie
+debian-branch = jessie
upstream-tag = upstream/%(version)s
debian-tag = debian/%(version)s
pristine-tar = True
diff -Nru libav-11.3/debian/patches/01-configure-disable-i686-for-i586.patch
libav-11.3/debian/patches/01-configure-disable-i686-for-i586.patch
--- libav-11.3/debian/patches/01-configure-disable-i686-for-i586.patch
1970-01-01 01:00:00.000000000 +0100
+++ libav-11.3/debian/patches/01-configure-disable-i686-for-i586.patch
2015-05-05 21:55:38.000000000 +0200
@@ -0,0 +1,19 @@
+Description: configure: Disable i686 for i586 and lower CPUs
+Origin: upstream,
+
https://git.libav.org/?p=libav.git;a=commit;h=9030c58a780a02fb8256cb75cd39275eaad786d1
+Last-Update: 2015-05-05
+
+---
+ configure | 1 +
+ 1 file changed, 1 insertion(+)
+
+--- a/configure
++++ b/configure
+@@ -3282,6 +3282,7 @@
+ case $cpu in
+ i[345]86|pentium)
+ cpuflags="-march=$cpu"
++ disable i686
+ disable mmx
+ ;;
+ # targets that do NOT support nopl and conditional mov (cmov)
diff -Nru libav-11.3/debian/patches/02-configure-disable-ebx-gcc-4.9.patch
libav-11.3/debian/patches/02-configure-disable-ebx-gcc-4.9.patch
--- libav-11.3/debian/patches/02-configure-disable-ebx-gcc-4.9.patch
1970-01-01 01:00:00.000000000 +0100
+++ libav-11.3/debian/patches/02-configure-disable-ebx-gcc-4.9.patch
2015-05-05 21:55:49.000000000 +0200
@@ -0,0 +1,25 @@
+Description: Disable ebx_available on i586
+Author: Sebastian Ramacher <[email protected]>,
+ Bernhard Übelacker <[email protected]>
+Bug: https://bugzilla.libav.org/show_bug.cgi?id=850
+Bug-Debian: https://bugs.debian.org/783082
+Last-Update: 2015-05-05
+
+--- a/configure
++++ b/configure
+@@ -3941,6 +3941,15 @@
+ check_inline_asm ebx_available '""::"b"(0)' &&
+ check_inline_asm ebx_available '"":::"%ebx"'
+
++ # workaround for debian#783082 / libav#850
++ if enabled gcc; then
++ case $($cc -dumpversion) in
++ 4.9.*|5.*)
++ disable ebx_available
++ ;;
++ esac
++ fi
++
+ # check whether xmm clobbers are supported
+ check_inline_asm xmm_clobbers '"":::"%xmm0"'
+
diff -Nru libav-11.3/debian/patches/series libav-11.3/debian/patches/series
--- libav-11.3/debian/patches/series 2015-01-17 19:25:07.000000000 +0100
+++ libav-11.3/debian/patches/series 2015-05-05 21:55:49.000000000 +0200
@@ -1 +1,3 @@
+01-configure-disable-i686-for-i586.patch
+02-configure-disable-ebx-gcc-4.9.patch
03-disable-configuration-warnings.patch
signature.asc
Description: Digital signature
--- End Message ---
--- Begin Message ---
Version: 8.1
Hi,
The fix discussed in this bug was released to stable as part of the 8.1
point release earlier today.
Regards,
Adam
--- End Message ---
