fmt: fix minimum version detection

FMT_COMPILE is needed

Change-Id: Ic7f7948d2816dc0017f9b780046e4ce9f31b4c9c

configure.ac

@@ -584,7 +584,7 @@ PKG_CHECK_MODULES([OPENDHT], [opendht >= 2.3.2],,
 PKG_CHECK_MODULES([SECP256K1], [libsecp256k1 >= 0.1],,
   AC_MSG_FAILURE([Missing secp256k1]))
 
-PKG_CHECK_MODULES([FMT], [fmt >= 6.0],,
+PKG_CHECK_MODULES([FMT], [fmt >= 7.0],,
   AC_MSG_FAILURE([Missing {fmt}]))
 
 # LIBUPNP

contrib/src/fmt/rules.mak

@@ -3,11 +3,10 @@ FMT_VERSION := 9.1.0
 FMT_URL := https://github.com/fmtlib/fmt/archive/$(FMT_VERSION).tar.gz
 
 PKGS += fmt
-ifeq ($(call need_pkg,'fmt >= 6.0'),)
+ifeq ($(call need_pkg,'fmt >= 7.0'),)
 PKGS_FOUND += fmt
 endif
 
-# fmt 5.3.0 fix: https://github.com/fmtlib/fmt/issues/1267
 FMT_CMAKECONF = -DBUILD_SHARED_LIBS=Off \
 				-DFMT_TEST=Off \
                 CMAKE_INSTALL_LIBDIR=$(PREFIX)/lib