Since retain attribute requires SHF_GNU_RETAIN, run retain tests only
if SHF_GNU_RETAIN is supported.
PR testsuite/99173
* c-c++-common/attr-retain-5.c: Require R_flag_in_section.
* c-c++-common/attr-retain-6.c: Likewise.
* c-c++-common/attr-retain-7.c: Likewise.
* c-c++-common/attr-retain-8.c: Likewise.
* c-c++-common/attr-retain-9.c: Likewise.
-/* { dg-do compile } */
+/* { dg-do compile { target R_flag_in_section } } */
/* { dg-skip-if "non-ELF target" { *-*-darwin* powerpc*-*-aix* } } */
/* { dg-options "-Wall -O2" } */
-/* { dg-do compile } */
+/* { dg-do compile { target R_flag_in_section } } */
/* { dg-skip-if "non-ELF target" { *-*-darwin* powerpc*-*-aix* } } */
/* { dg-options "-Wall -O2" } */
-/* { dg-do compile } */
+/* { dg-do compile { target R_flag_in_section } } */
/* { dg-skip-if "non-ELF target" { *-*-darwin* powerpc*-*-aix* } } */
/* { dg-options "-Wall -O2" } */
-/* { dg-do compile } */
+/* { dg-do compile { target R_flag_in_section } } */
/* { dg-skip-if "non-ELF target" { *-*-darwin* powerpc*-*-aix* } } */
/* { dg-options "-Wall -O2" } */
-/* { dg-do compile } */
+/* { dg-do compile { target R_flag_in_section } } */
/* { dg-skip-if "non-ELF target" { *-*-darwin* powerpc*-*-aix* } } */
/* { dg-options "-Wall -O2" } */