Bug#701830: vlc: FTBFS on powerpcspe (illegal insns due to -mtune=G4)

[Roland Stigge]

Source: vlc
Version: 2.0.5-1
Severity: wishlist
Tags: patch sid
User: debian-powerpcspe at breakpoint.cc
Usertags: powerpcspe

Hi,

vlc FTBFS on powerpcspe[1] like this:

[...]
libtool: compile:  gcc -std=gnu99 -DHAVE_CONFIG_H -I. -I.. -DMODULE_STRING=\"libvlc\" -I../include -I../include -D_FORTIFY_SOURCE=2 -g -O2 -fstack-protector --param=ssp-buffer-size=4 -Wformat -Werror=format-security -Wall -Wextra -Wsign-compare -Wundef -Wpointer-arith -Wbad-function-cast -Wwrite-strings -Wmissing-prototypes -Wvolatile-register-var -Werror-implicit-function-declaration -pipe -fvisibility=hidden -ffast-math -funroll-loops -fomit-frame-pointer -mtune=G4 -MT error.lo -MD -MP -MF .deps/error.Tpo -c error.c  -fPIC -DPIC -o .libs/error.o
{standard input}: Assembler messages:
{standard input}:434: Error: Unrecognized opcode: `stfd'
{standard input}:435: Error: Unrecognized opcode: `stfd'
{standard input}:436: Error: Unrecognized opcode: `stfd'
{standard input}:437: Error: Unrecognized opcode: `stfd'
{standard input}:438: Error: Unrecognized opcode: `stfd'
{standard input}:439: Error: Unrecognized opcode: `stfd'
{standard input}:440: Error: Unrecognized opcode: `stfd'
{standard input}:441: Error: Unrecognized opcode: `stfd'
make[2]: *** [error.lo] Error 1
make[1]: *** [override_dh_auto_configure] Error 2
make[2]: Leaving directory `/«PKGBUILDDIR»/lib'
make[1]: Leaving directory `/«PKGBUILDDIR»'
make: *** [build-arch] Error 2
dpkg-buildpackage: error: debian/rules build-arch gave error exit status 2

As you can see above, -mtune=G4 is used by default, leading to the above
illegal instructions. The attached patch fixes this by enabling altivec only on
powerpc _except_ powerpcspe, and doing "confflags += --with-tuning=8548" which
is propagated to gcc as "-mtune=8548" on powerpcspe.

Thanks,

Roland


[1] http://wiki.debian.org/PowerPCSPEPort

-- System Information:
Debian Release: 7.0
  APT prefers unreleased
  APT policy: (500, 'unreleased'), (500, 'unstable')
Architecture: powerpcspe (ppc)

Kernel: Linux 3.8.0 (SMP w/2 CPU cores)
Locale: LANG=en_GB.UTF-8, LC_CTYPE=en_GB.UTF-8 (charmap=UTF-8) (ignored: LC_ALL set to en_GB.UTF-8)
Shell: /bin/sh linked to /bin/dash
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