Copied from Debian.

Description: Explicitely link against -lm
Bug-Debian: http://bugs.debian.org/553595
Author: Fabian Greffrath <fabian@debian-unofficial.org>, Dmitrijs Ledkovs <dmitrij.ledkov@gmail.com>

---
 libao/Makefile.am |    1 +
 src/Makefile.am   |    2 +-
 2 files changed, 2 insertions(+), 1 deletions(-)

--- a/src/Makefile.am
+++ b/src/Makefile.am
@@ -1,9 +1,9 @@
-CFLAGS = @A52DEC_CFLAGS@
+AM_CFLAGS = @A52DEC_CFLAGS@
 
 bin_PROGRAMS = a52dec extract_a52
 a52dec_SOURCES = a52dec.c getopt.c gettimeofday.c
 a52dec_LDADD = $(top_builddir)/liba52/liba52.la \
-	       $(top_builddir)/libao/libao.a @LIBAO_LIBS@
+	       $(top_builddir)/libao/libao.a @LIBAO_LIBS@ -lm
 extract_a52_SOURCES = extract_a52.c getopt.c
 
 man_MANS = a52dec.1 extract_a52.1
--- a/liba52/Makefile.am
+++ b/liba52/Makefile.am
@@ -1,4 +1,4 @@
-CFLAGS = @CFLAGS@ @LIBA52_CFLAGS@
+AM_CFLAGS = @CFLAGS@ @LIBA52_CFLAGS@
 
 lib_LTLIBRARIES = liba52.la
 
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<div class='path'>path: <a href='/guix/log/?id=2782bd51f48e3f5a86c53e440b8698a5960f0323&amp;showmsg=1'>root</a>/<a href='/guix/log/gnu?id=2782bd51f48e3f5a86c53e440b8698a5960f0323&amp;showmsg=1'>gnu</a>/<a href='/guix/log/gnu/packages?id=2782bd51f48e3f5a86c53e440b8698a5960f0323&amp;showmsg=1'>packages</a>/<a href='/guix/log/gnu/packages/gdb.scm?id=2782bd51f48e3f5a86c53e440b8698a5960f0323&amp;showmsg=1'>gdb.scm</a></div><div class='content'><table class='list nowrap'><tr class='nohover'><th class='left'>Age</th><th class='left'>Commit message (<a href='/guix/log/gnu/packages/gdb.scm?id=2782bd51f48e3f5a86c53e440b8698a5960f0323'>Collapse</a>)</th><th class='left'>Author</th></tr>
<tr class='logheader'><td><span title='2018-09-07 17:55:55 +0200'>2018-09-07</span></td><td class='logsubject'><a href='/guix/commit/gnu/packages/gdb.scm?id=6b4f99102c4e3f57cc657c14ff196b211654f88b'>gnu: gdb: Update to 8.2.</a></td><td>Ludovic Courtès</td></tr>
<tr class='nohover-highlight'><td/><td colspan='3' class='logmsg'>
* gnu/packages/gdb.scm (gdb): Update to 8.2.


</td></tr>
<tr class='logheader'><td><span title='2018-08-24 17:50:52 +0200'>2018-08-24</span></td><td class='logsubject'><a href='/guix/commit/gnu/packages/gdb.scm?id=bf0bb925ea055496086fe0df48fc88977a5cc2cc'>gnu: gdb: Update to 8.1.1.</a></td><td>Ludovic Courtès</td></tr>
<tr class='nohover-highlight'><td/><td colspan='3' class='logmsg'>
* gnu/packages/gdb.scm (gdb): Update to 8.1.1.


</td></tr>
<tr class='logheader'><td><span title='2018-04-12 04:03:06 -0400'>2018-04-12</span></td><td class='logsubject'><a href='/guix/commit/gnu/packages/gdb.scm?id=a3401d64dbedf72c346e36624403102933e13c88'>gnu: gdb: Return #t from all phases.</a></td><td>Mark H Weaver</td></tr>
<tr class='nohover-highlight'><td/><td colspan='3' class='logmsg'>
* gnu/packages/gdb.scm (gdb)[arguments]: Return #t from all phases.


</td></tr>
<tr class='logheader'><td><span title='2018-01-31 23:31:38 +0100'>2018-01-31</span></td><td class='logsubject'><a href='/guix/commit/gnu/packages/gdb.scm?id=31bd4175c9c999f5ef4f59ee4c707d27883d0cb3'>gnu: gdb: Update to 8.1.</a></td><td>Ludovic Courtès</td></tr>
<tr class='nohover-highlight'><td/><td colspan='3' class='logmsg'>
* gnu/packages/gdb.scm (gdb): Update to 8.1.


</td></tr>
<tr class='logheader'><td><span title='2017-09-11 11:57:51 +0200'>2017-09-11</span></td><td class='logsubject'><a href='/guix/commit/gnu/packages/gdb.scm?id=130c3bc8948cb249129b3310561d9a2553926a60'>gnu: gdb: Update to 8.0.1.</a></td><td>Ludovic Courtès</td></tr>
<tr class='nohover-highlight'><td/><td colspan='3' class='logmsg'>
* gnu/packages/gdb.scm (gdb): Update to 8.0.1.


</td></tr>
<tr class='logheader'><td><span title='2017-06-05 23:52:41 +0200'>2017-06-05</span></td><td class='logsubject'><a href='/guix/commit/gnu/packages/gdb.scm?id=c84aca654601db677281fee478f464644a5f0b42'>gnu: gdb: Update to 8.0.</a></td><td>Ludovic Courtès</td></tr>
<tr class='nohover-highlight'><td/><td colspan='3' class='logmsg'>
* gnu/packages/gdb.scm (gdb): Update to 8.0.


</td></tr>
<tr class='logheader'><td><span title='2017-01-31 23:44:57 +0100'>2017-01-31</span></td><td class='logsubject'><a href='/guix/commit/gnu/packages/gdb.scm?id=c886608e6ba46930564327cbc6f2ee3ae8943d37'>gnu: gdb: Update to 7.12.1.</a></td><td>Ludovic Courtès</td></tr>
<tr class='nohover-highlight'><td/><td colspan='3' class='logmsg'>
* gnu/packages/gdb.scm (gdb): Update to 7.12.1.


</td></tr>