mpc depends on GMP/MPIR and MPFR.
I am trying something like this:

SAGE_SPKG_CONFIGURE([mpc], [
    AC_CHECK_HEADER(mpc.h, [], [sage_spkg_install_mpc=yes])
dnl mpc_cmp_abs appeared in MPC 1.1.0
    AC_SEARCH_LIBS([mpc_cmp_abs], [mpc], [break], [sage_spkg_install_mpc=yes])
])

to be merged as a part of #27822

Depends on #27212
Depends on #27258

CC: @embray

Component: build: configure

Keywords: spkg-configure mpc

Author: Dima Pasechnik, Erik Bray

Branch: d15ead5

Reviewer: Erik Bray, Dima Pasechnik

Issue created by migration from https://trac.sagemath.org/ticket/27259