gearman: apply patch to fix configure

In gearman-0.28, configure.ac has some bad copypasta that ends up
breaking the build on platforms that do not have librt, such as
MacOS X.

configure.ac --

    173 # Check for -lrt
    174 AC_CHECK_LIB([rt], [clock_gettime],
    175              [
    176               RT_LIB="-lrt"
    177               AC_SUBST(RT_LIB)
    178               AC_DEFINE([HAVE_LIBRT], [ 1 ], [Have clock_gettime])
    179               ],
    180              [
    181               AC_DEFINE([HAVE_LIBRT], [ 0 ], [Have clock_gettime])
    182               ])
    183
    184 # Check for -lm
    185 AC_CHECK_LIB([m], [floor],
    186              [
    187               M_LIB="-lrt"
    188               AC_SUBST(M_LIB)
    189               AC_DEFINE([HAVE_LIBRT], [ 1 ], [Have clock_gettime])
    190               ],
    191              [
    192               AC_DEFINE([HAVE_LIBRT], [ 0 ], [Have clock_gettime])
    193               ])

As the comment on line 184 indicates, it's supposed to be checking for
libm, not librt.  This commit corrects this, which fixes issue #10222.

Closes #10823.

Signed-off-by: Jack Nagel <[email protected]>

Library/Formula/gearman.rb

@@ -9,6 +9,12 @@ class Gearman < Formula
   depends_on 'libevent'
   depends_on 'ossp-uuid'
 
+  def patches
+    # gearman-0.28 build error "ld: library not found for -lrt"
+    # see https://bugs.launchpad.net/gearmand/+bug/951198
+    DATA
+  end
+
   def install
     system "./configure", "--prefix=#{prefix}"
     system "make install"
@@ -54,3 +60,46 @@ def startup_plist
     EOPLIST
   end
 end
+
+__END__
+--- gearmand-0.28/configure.ac.orig	2012-03-09 14:56:28.000000000 -0500
++++ gearmand-0.28/configure.ac	2012-03-09 14:56:58.000000000 -0500
+@@ -184,12 +184,12 @@
+ # Check for -lm
+ AC_CHECK_LIB([m], [floor], 
+              [
+-              M_LIB="-lrt"
++              M_LIB="-lm"
+               AC_SUBST(M_LIB)
+-              AC_DEFINE([HAVE_LIBRT], [ 1 ], [Have clock_gettime])
++              AC_DEFINE([HAVE_LIBM], [ 1 ], [Have floor])
+               ], 
+              [
+-              AC_DEFINE([HAVE_LIBRT], [ 0 ], [Have clock_gettime])
++              AC_DEFINE([HAVE_LIBM], [ 0 ], [Have floor])
+               ])
+
+ AC_CHECK_FUNC(setsockopt, [], [AC_CHECK_LIB(socket, setsockopt)])
+
+--- gearmand-0.28/configure.orig	2012-03-09 15:06:11.000000000 -0500
++++ gearmand-0.28/configure	2012-03-09 15:06:45.000000000 -0500
+@@ -25755,16 +25790,16 @@
+ $as_echo "$ac_cv_lib_m_floor" >&6; }
+ if test "x$ac_cv_lib_m_floor" = xyes; then :
+
+-              M_LIB="-lrt"
++              M_LIB="-lm"
+
+
+-$as_echo "#define HAVE_LIBRT  1 " >>confdefs.h
++$as_echo "#define HAVE_LIBM  1 " >>confdefs.h
+
+
+ else
+
+
+-$as_echo "#define HAVE_LIBRT  0 " >>confdefs.h
++$as_echo "#define HAVE_LIBM  0 " >>confdefs.h
+
+
+ fi