Remove stale references to libdl.a

Since commit 0c1c3a771eceec46e66ce1183cf988e2303bd373
("dlfcn: Move dlopen into libc") libdl.a is empty, so linking
against it is no longer necessary.

Tested on i686-linux-gnu and x86_64-linux-gnu.  Built with
build-many-glibcs.py.

---
 elf/Makefile                       | 7 +------
 sysdeps/powerpc/Makefile           | 1 -
 sysdeps/powerpc/powerpc64/Makefile | 1 -
 3 files changed, 1 insertion(+), 8 deletions(-)

On 09/06/2021 10:01, Florian Weimer via Libc-alpha wrote:
> Since commit 0c1c3a771eceec46e66ce1183cf988e2303bd373
> ("dlfcn: Move dlopen into libc") libdl.a is empty, so linking
> against it is no longer necessary.
> 
> Tested on i686-linux-gnu and x86_64-linux-gnu.  Built with
> build-many-glibcs.py.

LGTM, thanks.

Reviewed-by: Adhemerval Zanella  <adhemerval.zanella@linaro.org>

> 
> ---
>  elf/Makefile                       | 7 +------
>  sysdeps/powerpc/Makefile           | 1 -
>  sysdeps/powerpc/powerpc64/Makefile | 1 -
>  3 files changed, 1 insertion(+), 8 deletions(-)
> 
> diff --git a/elf/Makefile b/elf/Makefile
> index 6dbb03bbb2..5c47daee12 100644
> --- a/elf/Makefile
> +++ b/elf/Makefile
> @@ -1050,7 +1050,6 @@ unload7-ENV = MALLOC_PERTURB_=85
>  
>  $(objpfx)unload8.out: $(objpfx)unload8mod1.so $(objpfx)unload8mod1x.so
>  
> -$(objpfx)tst-tls9-static: $(common-objpfx)dlfcn/libdl.a
>  $(objpfx)tst-tls9-static.out: $(objpfx)tst-tlsmod5.so $(objpfx)tst-tlsmod6.so
>  
>  ifeq ($(have-z-execstack),yes)

Ok.

> @@ -1276,7 +1275,6 @@ $(objpfx)tst-leaks1-mem.out: $(objpfx)tst-leaks1.out
>  	$(common-objpfx)malloc/mtrace $(objpfx)tst-leaks1.mtrace > $@; \
>  	$(evaluate-test)
>  
> -$(objpfx)tst-leaks1-static: $(common-objpfx)dlfcn/libdl.a
>  $(objpfx)tst-leaks1-static-mem.out: $(objpfx)tst-leaks1-static.out
>  	$(common-objpfx)malloc/mtrace $(objpfx)tst-leaks1-static.mtrace > $@; \
>  	$(evaluate-test)

Ok.

> @@ -1533,7 +1531,6 @@ $(objpfx)tst-ldconfig-X.out : tst-ldconfig-X.sh $(objpfx)ldconfig
>  $(objpfx)tst-linkall-static: \
>    $(common-objpfx)math/libm.a \
>    $(common-objpfx)resolv/libresolv.a \
> -  $(common-objpfx)dlfcn/libdl.a \
>    $(common-objpfx)login/libutil.a \
>    $(common-objpfx)rt/librt.a \
>    $(common-objpfx)resolv/libanl.a \

Ok.

> @@ -1591,7 +1588,6 @@ $(objpfx)tst-absolute-zero: $(objpfx)tst-absolute-zero-lib.so
>  # against libdl.
>  $(objpfx)tst-libc_dlvsym-dso.so: $(libsupport)
>  $(objpfx)tst-libc_dlvsym.out: $(objpfx)tst-libc_dlvsym-dso.so
> -$(objpfx)tst-libc_dlvsym-static: $(common-objpfx)dlfcn/libdl.a
>  tst-libc_dlvsym-static-ENV = \
>    LD_LIBRARY_PATH=$(ld-library-path):$(common-objpfx)dlfcn
>  $(objpfx)tst-libc_dlvsym-static.out: $(objpfx)tst-libc_dlvsym-dso.so

Ok.

> @@ -1696,7 +1692,7 @@ $(objpfx)tst-single_threaded: $(objpfx)tst-single_threaded-mod1.so
>  $(objpfx)tst-single_threaded.out: \
>    $(objpfx)tst-single_threaded-mod2.so $(objpfx)tst-single_threaded-mod3.so
>  $(objpfx)tst-single_threaded-static-dlopen: \
> -  $(objpfx)tst-single_threaded-mod1.o $(common-objpfx)dlfcn/libdl.a
> +  $(objpfx)tst-single_threaded-mod1.o
>  $(objpfx)tst-single_threaded-static-dlopen.out: \
>    $(objpfx)tst-single_threaded-mod2.so
>  $(objpfx)tst-single_threaded-pthread: \

Ok.

> @@ -1834,6 +1830,5 @@ $(objpfx)tst-tls21: $(shared-thread-library)
>  $(objpfx)tst-tls21.out: $(objpfx)tst-tls21mod.so
>  $(objpfx)tst-tls21mod.so: $(tst-tls-many-dynamic-modules:%=$(objpfx)%.so)
>  
> -$(objpfx)tst-getauxval-static: $(common-objpfx)dlfcn/libdl.a
>  $(objpfx)tst-getauxval-static.out: $(objpfx)tst-auxvalmod.so
>  tst-getauxval-static-ENV = LD_LIBRARY_PATH=$(objpfx):$(common-objpfx)

Ok.

> diff --git a/sysdeps/powerpc/Makefile b/sysdeps/powerpc/Makefile
> index d1c71a0ca4..09860ffc01 100644
> --- a/sysdeps/powerpc/Makefile
> +++ b/sysdeps/powerpc/Makefile
> @@ -25,7 +25,6 @@ test-internal-extras += mod-cache-ppc
>  
>  mod-cache-ppc.so-no-z-defs = yes
>  tst-cache-ppc-static-dlopen-ENV = LD_LIBRARY_PATH=$(objpfx):$(common-objpfx):$(common-objpfx)elf
> -$(objpfx)tst-cache-ppc-static-dlopen: $(common-objpfx)dlfcn/libdl.a
>  $(objpfx)tst-cache-ppc-static-dlopen.out: $(objpfx)mod-cache-ppc.so
>  
>  $(objpfx)tst-cache-ppc: $(objpfx)mod-cache-ppc.so

Ok.

> diff --git a/sysdeps/powerpc/powerpc64/Makefile b/sysdeps/powerpc/powerpc64/Makefile
> index dd49dbbce2..679d5e49ba 100644
> --- a/sysdeps/powerpc/powerpc64/Makefile
> +++ b/sysdeps/powerpc/powerpc64/Makefile
> @@ -59,7 +59,6 @@ tests += tst-setjmp-bug21895-static
>  tests-static += tst-setjmp-bug21895-static
>  modules-names += setjmp-bug21895
>  
> -$(objpfx)tst-setjmp-bug21895-static: $(common-objpfx)dlfcn/libdl.a
>  $(objpfx)tst-setjmp-bug21895-static.out: $(objpfx)setjmp-bug21895.so
>  
>  tst-setjmp-bug21895-static-ENV = \
> 

Ok.