[Check-devel] Linker errors in Check example on Ubuntu 14.04

[Clay M. <cl...@da...>]

Howdy,

In working through the Check tutorial, step 3.5 (here:
http://check.sourceforge.net/doc/check_html/check_3.html#Creating-a-Suite-1)
on Ubuntu 14.04, I've run into some linker errors:

/usr/lib/gcc/x86_64-linux-gnu/4.8/../../../x86_64-linux-gnu/libcheck.a(check.o):
In function `tcase_create':
(.text+0x194): undefined reference to `floor'
/usr/lib/gcc/x86_64-linux-gnu/4.8/../../../x86_64-linux-gnu/libcheck.a(check.o):
In function `tcase_create':
(.text+0x1a8): undefined reference to `floor'
/usr/lib/gcc/x86_64-linux-gnu/4.8/../../../x86_64-linux-gnu/libcheck.a(check.o):
In function `tcase_set_timeout':
(.text+0x435): undefined reference to `floor'
/usr/lib/gcc/x86_64-linux-gnu/4.8/../../../x86_64-linux-gnu/libcheck.a(check.o):
In function `tcase_set_timeout':
(.text+0x449): undefined reference to `floor'
/usr/lib/gcc/x86_64-linux-gnu/4.8/../../../x86_64-linux-gnu/libcheck.a(check_pack.o):
In function `ppack':
(.text+0x51d): undefined reference to `__pthread_register_cancel'
/usr/lib/gcc/x86_64-linux-gnu/4.8/../../../x86_64-linux-gnu/libcheck.a(check_pack.o):
In function `ppack':
(.text+0x551): undefined reference to `__pthread_unregister_cancel'
/usr/lib/gcc/x86_64-linux-gnu/4.8/../../../x86_64-linux-gnu/libcheck.a(check_run.o):
In function `srunner_run':
(.text+0x965): undefined reference to `timer_create'
/usr/lib/gcc/x86_64-linux-gnu/4.8/../../../x86_64-linux-gnu/libcheck.a(check_run.o):
In function `srunner_run':
(.text+0x9b3): undefined reference to `timer_settime'
/usr/lib/gcc/x86_64-linux-gnu/4.8/../../../x86_64-linux-gnu/libcheck.a(check_run.o):
In function `srunner_run':
(.text+0x9d9): undefined reference to `timer_delete'
collect2: error: ld returned 1 exit status

Adding the following to configure.ac fixes that up:

# Checks for libraries
AC_CHECK_LIB(m, floor)
AC_CHECK_LIB(rt, setitimer)
AC_CHECK_LIB(pthread, pthread_create)

If that looks like an acceptable fix, I'd be happy to submit a patch.

Thanks, and happy checking!

Clay