ecl @20.4.24 configure script fails - "There is no appropiate integer type for the cl_fixnum type"

[c-kloukinas]

Last few lines of the log:

:info:configure checking size of long long... not available
:info:configure checking whether byte ordering is bigendian... no
:info:configure checking appropiate type for fixnums... configure: error: There is no appropiate integer type for the cl_fixnum type
:info:configure Command failed:  cd "/opt/local/var/macports/build/_opt_local_var_macports_sources_github.com_macports_macports-ports_lang_ecl/ecl/work/ecl-20.4.24" && ./configure --prefix=/opt/local --enable-boehm=included

port -v "MacPorts 2.6.1"

Xcode "11.7 (11E801a)"

gcc -v

Configured with: --prefix=/Applications/Xcode.app/Contents/Developer/usr --with-gxx-include-dir=/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX.sdk/usr/include/c++/4.2.1
Apple clang version 11.0.3 (clang-1103.0.32.62)
Target: x86_64-apple-darwin19.6.0
Thread model: posix
InstalledDir: /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin

gcc-mp-10 -v

Using built-in specs.
COLLECT_GCC=gcc-mp-10
COLLECT_LTO_WRAPPER=/opt/local/libexec/gcc/x86_64-apple-darwin19/10.2.0/lto-wrapper
Target: x86_64-apple-darwin19
Configured with: /opt/local/var/macports/build/_opt_bblocal_var_buildworker_ports_build_ports_lang_gcc10/gcc10/work/gcc-10.2.0/configure --prefix=/opt/local --build=x86_64-apple-darwin19 --enable-languages=c,c++,objc,obj-c++,lto,fortran,jit --libdir=/opt/local/lib/gcc10 --includedir=/opt/local/include/gcc10 --infodir=/opt/local/share/info --mandir=/opt/local/share/man --datarootdir=/opt/local/share/gcc-10 --with-local-prefix=/opt/local --with-system-zlib --disable-nls --program-suffix=-mp-10 --with-gxx-include-dir=/opt/local/include/gcc10/c++/ --with-gmp=/opt/local --with-mpfr=/opt/local --with-mpc=/opt/local --with-isl=/opt/local --enable-stage1-checking --disable-multilib --enable-lto --enable-libstdcxx-time --with-build-config=bootstrap-debug --with-as=/opt/local/bin/as --with-ld=/opt/local/bin/ld --with-ar=/opt/local/bin/ar --with-bugurl=https://trac.macports.org/newticket --enable-host-shared --disable-tls --with-pkgversion='MacPorts gcc10 10.2.0_1' --with-sysroot=/Library/Developer/CommandLineTools/SDKs/MacOSX10.15.sdk
Thread model: posix
Supported LTO compression algorithms: zlib
gcc version 10.2.0 (MacPorts gcc10 10.2.0_1)

[c-kloukinas]

/opt/local/var/macports/logs/_opt_local_var_macports_sources_github.com_macports_macports-ports_lang_ecl/ecl/main.log