coarray_failed_images_1.f08: Add "-latomic" option if libatomic_available.

	* gfortran.dg/coarray_failed_images_1.f08: Add "-latomic" option if
	libatomic_available.
	* gfortran.dg/coarray_image_status_1.f08: Likewise.
	* gfortran.dg/coarray_stopped_images_1.f08: Likewise.

From-SVN: r246484

gcc/testsuite/ChangeLog

+2017-03-26  John David Anglin  <danglin@gcc.gnu.org>
+
+	* gfortran.dg/coarray_failed_images_1.f08: Add "-latomic" option if
+	libatomic_available.
+	* gfortran.dg/coarray_image_status_1.f08: Likewise.
+	* gfortran.dg/coarray_stopped_images_1.f08: Likewise.
+
 2017-03-25  Jerry DeLisle  <jvdelisle@gcc.gnu.org>
 
 	PR libgfortran/78881

gcc/testsuite/gfortran.dg/coarray_failed_images_1.f08

 ! { dg-do run }
 ! { dg-options "-fdump-tree-original -fcoarray=lib -lcaf_single" }
+! { dg-additional-options "-latomic" { target libatomic_available } }
 
 program test_failed_images_1
   implicit none

gcc/testsuite/gfortran.dg/coarray_image_status_1.f08

 ! { dg-do run }
 ! { dg-options "-fcoarray=lib -lcaf_single -fdump-tree-original" }
+! { dg-additional-options "-latomic" { target libatomic_available } }
 
 program test_image_status_1
   use iso_fortran_env , only : STAT_STOPPED_IMAGE

gcc/testsuite/gfortran.dg/coarray_stopped_images_1.f08

 ! { dg-do run }
 ! { dg-options "-fdump-tree-original -fcoarray=lib -lcaf_single" }
+! { dg-additional-options "-latomic" { target libatomic_available } }
 
 program test_stopped_images_1
   implicit none