Bug#697805: Package gcc-4.7 fails to build with dpkg-buildpackage

[Logan Perkins <perkins@injeanieousdesigns.com>]

Package: gcc-4.7
Version: 4.7.2-4
Severity: serious
Justification: fails to build from source (using dpkg-buildpackage)




I obtained the gcc 4.7 sources via `apt-get source gcc-4.7'.  I then tried
debuild on the newly created directory (gcc-4.7-4.7.2), when it failed, I tried
 using dpkg-buildpackage directly.  It also fails, with the same error, when
applying the debian specific patches.  The salient part of the output follows.



  Applying patch gcc-default-format-security.diff
  patching file src/gcc/c-family/c-common.c
  Hunk #1 succeeded at 202 (offset 1 line).
  patching file src/gcc/c-family/c.opt
  Hunk #1 succeeded at 392 (offset 8 lines).
  patching file src/gcc/doc/invoke.texi
  Hunk #1 FAILED at 3102.
  Hunk #2 FAILED at 3155.
  2 out of 2 hunks FAILED -- rejects in file src/gcc/doc/invoke.texi
  Patch gcc-default-format-security.diff does not apply (enforce with -f)
  make: *** [stamps/02-patch-stamp] Error 1
  dpkg-buildpackage: error: debian/rules build gave error exit status 2
  debuild: fatal error at line 1357:
  dpkg-buildpackage -rfakeroot -D -us -uc failed


This is because the gcc documentation has been moved to non-free but the debian
scripts have not been updated to match.  The contents of src/gcc/doc/invoke.texi
are a message indicating the documentation has been removed.  Modifying the
downloaded source so it again contains the documentation allows it to build.

I believe the solution is to edit the failing patch file so that it does not try to
patch anything in the doc directory.



The same problem also seems to apply to gcc 4.6 and gcc 4.5.





-- System Information:
Debian Release: wheezy/sid
  APT prefers testing
  APT policy: (500, 'testing')
Architecture: amd64 (x86_64)

Kernel: Linux 3.2.0-4-amd64 (SMP w/6 CPU cores)
Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash

Versions of packages gcc-4.7 depends on:
ii  binutils      2.22-7.1
ii  cpp-4.7       4.7.2-4
ii  gcc-4.7-base  4.7.2-4
ii  libc6         2.13-37
ii  libgcc1       1:4.7.2-4
ii  libgmp10      2:5.0.5+dfsg-2
ii  libgomp1      4.7.2-4
ii  libitm1       4.7.2-4
ii  libmpc2       0.9-4
ii  libmpfr4      3.1.0-5
ii  libquadmath0  4.7.2-4
ii  zlib1g        1:1.2.7.dfsg-13

Versions of packages gcc-4.7 recommends:
ii  libc6-dev  2.13-37

Versions of packages gcc-4.7 suggests:
pn  binutils-gold        <none>
pn  gcc-4.7-doc          <none>
pn  gcc-4.7-locales      <none>
ii  gcc-4.7-multilib     4.7.2-4
pn  libgcc1-dbg          <none>
pn  libgomp1-dbg         <none>
pn  libitm1-dbg          <none>
pn  libmudflap0-4.7-dev  <none>
pn  libmudflap0-dbg      <none>
pn  libquadmath0-dbg     <none>

-- no debconf information