UCT/IB/RDMACM: Disable rdmacm support when verbs is disabled

[tvegas1]

What?

Do not advertize rdmacm in the build_module list when --without-verbs is specified.

Why?

gtest crashes because enum_md_resources() calls dlopen(rdmacm) which ends-up loading the unrelated system-wide library, which in turn loads the system-wide uct ib.

==== backtrace (tid:1050034) ====
 0 0x0000000000012ce0 __funlockfile()  :0
 1 0x000000000005b319 ucs_config_parser_parse_field()  src/ucs/config/parser.c:1333
 2 0x000000000005b537 ucs_config_parser_set_default_values()  src/ucs/config/parser.c:1384
 3 0x000000000005b50d ucs_config_parser_set_default_values()  src/ucs/config/parser.c:1378
 4 0x000000000005c560 ucs_config_parser_fill_opts()  src/ucs/config/parser.c:1831
 5 0x0000000000017c43 uct_config_read()  src/uct/base/uct_component.c:151
 6 0x0000000000014559 uct_md_config_read()  src/uct/base/uct_md.c:269
 7 0x0000000000756dbf uct_test::enum_resources()  test/gtest/uct/uct_test.cc:417
 8 0x00000000005d0fbe gtest_rc_verbsuct_atomic_key_reg_rdma_mem_type_EvalGenerator_()  test/gtest/uct/test_atomic_key_reg_rdma_mem_type.cc:43

[yosefe]

1. what is the "unrelated system-wide library" in the PR description?
2. can we add CI test to check it?

[tvegas1]

1. we pick-up /usr/lib64/ucx/libuct_rdmacm.so.0 which depends on /usr/lib64/ucx/libuct_ib.so.0
2. i doubt it would be easy to add, apart making sure that ./configure-devel --without-verbs | grep module.*rdmacm remains empty?

[yosefe]

1. thx for the clarification
2. maybe we can check in one of the files produced by ./configure

[tvegas1]

added it

[yosefe]

why need to remove config.log? configure-release would rewrite it anyway

[tvegas1]

fixed

[tvegas1]

/azp run UCX PR

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