Link jemalloc pool and test with libc

This forces the linker to link with libc before linking with jemalloc.
Because of that, jemalloc will not override symbols for malloc/free.

Author: igchor

src/pool/CMakeLists.txt

@@ -33,7 +33,7 @@ if(UMF_BUILD_LIBUMF_POOL_JEMALLOC)
         add_umf_library(NAME jemalloc_pool
                         TYPE STATIC
                         SRCS pool_jemalloc.c
-                        LIBS jemalloc umf_utils)
+                        LIBS c jemalloc umf_utils) # TODO: link directly with libc to force using malloc from glibc
         add_library(${PROJECT_NAME}::jemalloc_pool ALIAS jemalloc_pool)
         install(TARGETS jemalloc_pool
             EXPORT ${PROJECT_NAME}-targets

test/CMakeLists.txt

@@ -82,7 +82,7 @@ if(UMF_BUILD_OS_MEMORY_PROVIDER)
     if(UMF_BUILD_LIBUMF_POOL_JEMALLOC)
         add_umf_test(NAME jemalloc_pool
                     SRCS pools/jemalloc_pool.cpp malloc_compliance_tests.cpp
-                    LIBS jemalloc_pool)
+                    LIBS c jemalloc_pool) # TODO: link directly with libc to force using malloc from glibc
     endif()
 else()
     message(STATUS "The jemalloc_pool test is DISABLED, because it uses OS_MEMORY_PROVIDER, while the UMF_BUILD_OS_MEMORY_PROVIDER option is set to OFF")