darwinbuild-legacy fails to build on Leopard: error: storage size of ‘ctx’ isn’t known

[barracuda156]

Vanilla port file, no custom patches:

--->  Building darwinbuild-legacy
Executing:  cd "/opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_macports_release_tarballs_ports_devel_darwinbuild-legacy/darwinbuild-legacy/work/darwinbuild-4848b7f5b223e094a26c413b451d27b938b0f2bd" && /usr/bin/make -j4 -w all PREFIX=/opt/local 
make: Entering directory `/opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_macports_release_tarballs_ports_devel_darwinbuild-legacy/darwinbuild-legacy/work/macosforge-darwinbuild-4848b7f'
*** Making all in darwinbuild ***
make[1]: Entering directory `/opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_macports_release_tarballs_ports_devel_darwinbuild-legacy/darwinbuild-legacy/work/macosforge-darwinbuild-4848b7f/darwinbuild'
make[1]: warning: jobserver unavailable: using -j1.  Add `+' to parent make rule.
cc -arch ppc -Wall -Werror -o ./manifest -lcrypto manifest.c
manifest.c: In function ‘calculate_digest’:
manifest.c:68: error: storage size of ‘ctx’ isn’t known
cc1: warnings being treated as errors
manifest.c:68: warning: unused variable ‘ctx’
make[1]: *** [manifest] Error 1
make[1]: Leaving directory `/opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_macports_release_tarballs_ports_devel_darwinbuild-legacy/darwinbuild-legacy/work/macosforge-darwinbuild-4848b7f/darwinbuild'
make: *** [all] Error 1
make: Leaving directory `/opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_macports_release_tarballs_ports_devel_darwinbuild-legacy/darwinbuild-legacy/work/macosforge-darwinbuild-4848b7f'
Command failed:  cd "/opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_macports_release_tarballs_ports_devel_darwinbuild-legacy/darwinbuild-legacy/work/darwinbuild-4848b7f5b223e094a26c413b451d27b938b0f2bd" && /usr/bin/make -j4 -w all PREFIX=/opt/local 
Exit code: 2
Error: Failed to build darwinbuild-legacy: command execution failed
Error: See /opt/local/var/macports/logs/_opt_local_var_macports_sources_rsync.macports.org_macports_release_tarballs_ports_devel_darwinbuild-legacy/darwinbuild-legacy/main.log for details.
Error: Follow https://guide.macports.org/#project.tickets if you believe there is a bug.
Error: Processing of port darwinbuild-legacy failed