fips: define DH_MIN_SIZE for the FIPS PILOT build (v5.2.1 base predates it)

Author: aidangarske

scripts/utils-wolfssl.sh

@@ -259,6 +259,8 @@ install_wolfssl() {
                 # So for the 'git' commands, we'll just use whatever the system comes with.
                 if [ "$fips_check_script" = "fips-check-PILOT.sh" ]; then
                     # PILOT script has different usage: [flavor] [keep]
+                    # v5.2.1 FIPS base predates DH_MIN_SIZE; export it for the PILOT and the XXX-fips-test rebuilds below.
+                    export CPPFLAGS="${CPPFLAGS:-} -DDH_MIN_SIZE=2048"
                     LD_LIBRARY_PATH="" ./$fips_check_script "$fips_tag" keep >$LOG_FILE 2>&1
                     RET_CODE=$?
                 else