[glibc/siddhesh/malloc-hooks] Make mcheck tests conditional on GLIBC_2.23 or earlier

[Siddhesh Poyarekar <siddhesh@sourceware.org>]

https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=be25071ce74b1805c9855a7d41f3f850ac95342a

commit be25071ce74b1805c9855a7d41f3f850ac95342a
Author: Siddhesh Poyarekar <siddhesh@sourceware.org>
Date:   Fri Jul 9 16:45:08 2021 +0530

    Make mcheck tests conditional on GLIBC_2.23 or earlier
    
    Targets with base versions of 2.24 or later won't have
    __malloc_initialize_hook because of which the tests will essentially
    be the same as the regular malloc tests.  Avoid running them instead
    and save time.

Diff:
---
 malloc/Makefile | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/malloc/Makefile b/malloc/Makefile
index 47369b6084..6cac2e5d8d 100644
--- a/malloc/Makefile
+++ b/malloc/Makefile
@@ -78,6 +78,8 @@ tests-exclude-malloc-check = tst-malloc-check tst-malloc-usable \
 # Run all tests with MALLOC_CHECK_=3
 tests-malloc-check = $(filter-out $(tests-exclude-malloc-check),$(tests))
 
+# -lmcheck needs __malloc_initialize_hook, which was deprecated in 2.24.
+ifeq ($(have-GLIBC_2.23)$(build-shared),yesyes)
 # Tests that don't play well with mcheck.  They are either bugs in mcheck or
 # the tests expect specific internal behavior that is changed due to linking to
 # libmcheck.a.
@@ -100,6 +102,7 @@ tests-exclude-mcheck = tst-mallocstate \
 	tst-reallocarray
 
 tests-mcheck = $(filter-out $(tests-exclude-mcheck), $(tests))
+endif
 
 routines = malloc morecore mcheck mtrace obstack reallocarray \
   scratch_buffer_dupfree \