[Bug 752924] Re: Setting CXXFLAGS drops the autoconf default "-g -O2"

[OXullo Intersecans]

Sorry, my fault. Actually it's the same mistake I made to get libavg
upstream upgrade uploaded.

My apologies

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https://bugs.launchpad.net/bugs/752924

Title:
  Setting CXXFLAGS drops the autoconf default "-g -O2"

Status in “libavg” package in Ubuntu:
  New

Bug description:
  Since version 1.0.1-1ubuntu1, CXXFLAGS is set, in order to add a
  define (__STDC_CONSTANT_MACROS) to fix a FTBFS caused by ffmpeg-
  related libraries c++ compilation. This broke the expected behavior of
  AC_PROG_CXX macro, which sets CXXFLAGS to "-g -O2"  when CXXFLAGS is
  unset [1].

  In this way, libavg binaries are compiled with no optimizations, which
  may lead to unexpected behavior (under linux, libavg is extensively
  tested with -O2).

  [1]: http://www.gnu.org/software/autoconf/manual/autoconf.html
  (5.10.4)