copypasta fail results in broken build when librt not available

[Dossy Shiobara]

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.

Attached is a patch that fixes the problem.

[Brian Aker (brianaker)]

Thanks this was fixed in trunk.