coarray_41.f90: Add "-latomic" option if libatomic_available.

	* gfortran.dg/coarray_41.f90: Add "-latomic" option if
	libatomic_available.
	* gfortran.dg/coarray_42.f90: Likewise.
	* gfortran.dg/coarray_alloc_comp_3.f08: Likewise.
	* gfortran.dg/coarray_alloc_comp_4.f08: Likewise.
	* gfortran.dg/coarray_lib_alloc_4.f90: Likewise.

From-SVN: r245004

gcc/testsuite/ChangeLog

+2017-01-28  John David Anglin  <danglin@gcc.gnu.org>
+
+	* gfortran.dg/coarray_41.f90: Add "-latomic" option if
+	libatomic_available.
+	* gfortran.dg/coarray_42.f90: Likewise.
+	* gfortran.dg/coarray_alloc_comp_3.f08: Likewise.
+	* gfortran.dg/coarray_alloc_comp_4.f08: Likewise.
+	* gfortran.dg/coarray_lib_alloc_4.f90: Likewise.
+
 2017-01-27  Martin Sebor  <msebor@redhat.com>
 
 	* gcc.dg/tree-ssa/builtin-sprintf-warn-1.c: Add test cases.

gcc/testsuite/gfortran.dg/coarray_41.f90

 ! { dg-do run }
 ! { dg-options "-fcoarray=lib -lcaf_single" }
+! { dg-additional-options "-latomic" { target libatomic_available } }
 
 program coarray_41
 

gcc/testsuite/gfortran.dg/coarray_42.f90

 ! { dg-do run }
 ! { dg-options "-fdump-tree-original -fcoarray=lib -lcaf_single" }
+! { dg-additional-options "-latomic" { target libatomic_available } }
 
 program Jac
   type Domain

gcc/testsuite/gfortran.dg/coarray_alloc_comp_3.f08

 ! { dg-do run }
 ! { dg-options "-fcoarray=lib -lcaf_single" }
+! { dg-additional-options "-latomic" { target libatomic_available } }
 !
 ! Contributed by Andre Vehreschild
 ! Check that manually freeing components does not lead to a runtime crash,

gcc/testsuite/gfortran.dg/coarray_alloc_comp_4.f08

 ! { dg-do compile }
 ! { dg-options "-fcoarray=lib -fdump-tree-original" }
+! { dg-additional-options "-latomic" { target libatomic_available } }
 !
 ! Contributed by Andre Vehreschild
 ! Check that sub-components are caf_deregistered and not freed.

gcc/testsuite/gfortran.dg/coarray_lib_alloc_4.f90

 ! { dg-do run }
 ! { dg-options "-fcoarray=lib -lcaf_single -fdump-tree-original" }
+! { dg-additional-options "-latomic" { target libatomic_available } }
 !
 ! Allocate/deallocate with libcaf.
 !