[libc] Link mpfr and gmp wrapper to the libcMPFRWrapper.

This will fix building the wrapper shared library when
BUILD_SHARED_LIBS is ON.

Reviewers: PaulkaToast

Differential Revision: https://reviews.llvm.org/D78737

GitOrigin-RevId: 1e2772c0a3333f10b3fd0e0220022e80f4b0afd2
diff --git a/utils/MPFRWrapper/CMakeLists.txt b/utils/MPFRWrapper/CMakeLists.txt
index aa03724..8de7374 100644
--- a/utils/MPFRWrapper/CMakeLists.txt
+++ b/utils/MPFRWrapper/CMakeLists.txt
@@ -12,6 +12,7 @@
     MPFRUtils.cpp
     MPFRUtils.h
   )
+  target_link_libraries(libcMPFRWrapper -lmpfr -lgmp)
 else()
   message(WARNING "Math tests using MPFR will be skipped.")
 endif()