dlfcn: Cleanups after -ldl is no longer required

This commit removes the ELF constructor and internal variables from
dlfcn/dlfcn.c.  The file now serves the same purpose as
nptl/libpthread-compat.c, so it is renamed to dlfcn/libdl-compat.c.
The use of libdl-shared-only-routines ensures that libdl.a is empty.

This commit adjusts the test suite not to use $(libdl).  The libdl.so
symbolic link is no longer installed.

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

1 files changed, 0 insertions, 6 deletions

diff --git a/Makeconfig b/Makeconfig
index 1d5e459..c349645 100644
--- a/Makeconfig
+++ b/Makeconfig
@@ -1256,12 +1256,6 @@ endif # build-shared
 
 
 ifeq ($(build-shared),yes)
-libdl = $(common-objpfx)dlfcn/libdl.so$(libdl.so-version)
-else
-libdl = $(common-objpfx)dlfcn/libdl.a
-endif
-
-ifeq ($(build-shared),yes)
 libm = $(common-objpfx)math/libm.so$(libm.so-version)
 libmvec = $(common-objpfx)mathvec/libmvec.so$(libmvec.so-version)
 else