"-enable-slpv2-security" fails with latest openssl version

[vk6xebec]

I tried to compile openslp with this option

-enable-slpv2-security

I got numerous errors relating to the following error
`error: incomplete definition of type 'SLPCryptoDSAKey' (aka 'struct dsa_st')-

Tail of the build file here:
openslperrors.txt

Apparently it cannot compile with the latest versions of openssl, so my friendly GPTs (including ChatGPTs o4 model) suggested using an older version of Openssl; creating a patch, loading some modules etc. However after hours of testing nothing worked.

I'm not a programmer or coder by profession so building a patch or fix is outside my skill level.

I thought I would highlight it anyways for a future fix one day or if someone knows of an easy fix.

[vk6xebec]

If the file doesn't open, these are the errors:

`------------------------------------------------------------

OpenSLP Version 2.0.0 Configuration:

Prefix: '/usr/local'.
Compiler: 'clang -O2 -flto -fvisibility=hidden -fsanitize=safe-stack -fstack-clash-protection -fno-common -fPIE -fstack-protector-strong -D_FORTIFY_SOURCE=2 -fno-omit-frame-pointer -Wall -O2 -I/opt/openssl-1.1.1w/include -DLINUX'

Package features:
SLPv1 Messages: no
SLPv2 Security: yes
SLP Async API: yes
SLP Predicates: yes
Debugging: no

Now type 'make [prefix=] []'
where the optional is:
all - build all binaries (default).
docs - build doxygen documentation.
install - install all binaries and data.

additionally, on rpm-based systems only:
rpmcheck - check whether rpms may be built.
srcrpm - build only source rpm.
rpms - build source and binary rpms.

---

======== CONFIGURE SUMMARY ========

=== Building and installing OpenSLP ===
make all-recursive
make[1]: Entering directory '/tmp/openslp-build/openslp-2.0.0'
Making all in common
make[2]: Entering directory '/tmp/openslp-build/openslp-2.0.0/common'
/bin/bash ../libtool --tag=CC --mode=compile clang -DHAVE_CONFIG_H -I. -I.. -I/opt/openssl-1.1.1w/include -DLINUX -O2 -flto -fvisibility=hidden -fsanitize=safe-stack -fstack-clash-protection -fno-common -fPIE -fstack-protector-strong -D_FORTIFY_SOURCE=2 -fno-omit-frame-pointer -Wall -O2 -c -o slp_atomic.lo slp_atomic.c
/bin/bash ../libtool --tag=CC --mode=compile clang -DHAVE_CONFIG_H -I. -I.. -I/opt/openssl-1.1.1w/include -DLINUX -O2 -flto -fvisibility=hidden -fsanitize=safe-stack -fstack-clash-protection -fno-common -fPIE -fstack-protector-strong -D_FORTIFY_SOURCE=2 -fno-omit-frame-pointer -Wall -O2 -c -o slp_buffer.lo slp_buffer.c
/bin/bash ../libtool --tag=CC --mode=compile clang -DHAVE_CONFIG_H -I. -I.. -I/opt/openssl-1.1.1w/include -DLINUX -O2 -flto -fvisibility=hidden -fsanitize=safe-stack -fstack-clash-protection -fno-common -fPIE -fstack-protector-strong -D_FORTIFY_SOURCE=2 -fno-omit-frame-pointer -Wall -O2 -c -o slp_compare.lo slp_compare.c
/bin/bash ../libtool --tag=CC --mode=compile clang -DHAVE_CONFIG_H -I. -I.. -I/opt/openssl-1.1.1w/include -DLINUX -O2 -flto -fvisibility=hidden -fsanitize=safe-stack -fstack-clash-protection -fno-common -fPIE -fstack-protector-strong -D_FORTIFY_SOURCE=2 -fno-omit-frame-pointer -Wall -O2 -c -o slp_database.lo slp_database.c
/bin/bash ../libtool --tag=CC --mode=compile clang -DHAVE_CONFIG_H -I. -I.. -I/opt/openssl-1.1.1w/include -DLINUX -O2 -flto -fvisibility=hidden -fsanitize=safe-stack -fstack-clash-protection -fno-common -fPIE -fstack-protector-strong -D_FORTIFY_SOURCE=2 -fno-omit-frame-pointer -Wall -O2 -c -o slp_debug.lo slp_debug.c
/bin/bash ../libtool --tag=CC --mode=compile clang -DHAVE_CONFIG_H -I. -I.. -I/opt/openssl-1.1.1w/include -DLINUX -O2 -flto -fvisibility=hidden -fsanitize=safe-stack -fstack-clash-protection -fno-common -fPIE -fstack-protector-strong -D_FORTIFY_SOURCE=2 -fno-omit-frame-pointer -Wall -O2 -c -o slp_dhcp.lo slp_dhcp.c
/bin/bash ../libtool --tag=CC --mode=compile clang -DHAVE_CONFIG_H -I. -I.. -I/opt/openssl-1.1.1w/include -DLINUX -O2 -flto -fvisibility=hidden -fsanitize=safe-stack -fstack-clash-protection -fno-common -fPIE -fstack-protector-strong -D_FORTIFY_SOURCE=2 -fno-omit-frame-pointer -Wall -O2 -c -o slp_iface.lo slp_iface.c
/bin/bash ../libtool --tag=CC --mode=compile clang -DHAVE_CONFIG_H -I. -I.. -I/opt/openssl-1.1.1w/include -DLINUX -O2 -flto -fvisibility=hidden -fsanitize=safe-stack -fstack-clash-protection -fno-common -fPIE -fstack-protector-strong -D_FORTIFY_SOURCE=2 -fno-omit-frame-pointer -Wall -O2 -c -o slp_linkedlist.lo slp_linkedlist.c
libtool: compile: clang -DHAVE_CONFIG_H -I. -I.. -I/opt/openssl-1.1.1w/include -DLINUX -O2 -flto -fvisibility=hidden -fsanitize=safe-stack -fstack-clash-protection -fno-common -fstack-protector-strong -D_FORTIFY_SOURCE=2 -fno-omit-frame-pointer -Wall -O2 -c slp_buffer.c -fPIC -DPIC -o .libs/slp_buffer.o
libtool: compile: clang -DHAVE_CONFIG_H -I. -I.. -I/opt/openssl-1.1.1w/include -DLINUX -O2 -flto -fvisibility=hidden -fsanitize=safe-stack -fstack-clash-protection -fno-common -fstack-protector-strong -D_FORTIFY_SOURCE=2 -fno-omit-frame-pointer -Wall -O2 -c slp_database.c -fPIC -DPIC -o .libs/slp_database.o
libtool: compile: clang -DHAVE_CONFIG_H -I. -I.. -I/opt/openssl-1.1.1w/include -DLINUX -O2 -flto -fvisibility=hidden -fsanitize=safe-stack -fstack-clash-protection -fno-common -fstack-protector-strong -D_FORTIFY_SOURCE=2 -fno-omit-frame-pointer -Wall -O2 -c slp_compare.c -fPIC -DPIC -o .libs/slp_compare.o
libtool: compile: clang -DHAVE_CONFIG_H -I. -I.. -I/opt/openssl-1.1.1w/include -DLINUX -O2 -flto -fvisibility=hidden -fsanitize=safe-stack -fstack-clash-protection -fno-common -fstack-protector-strong -D_FORTIFY_SOURCE=2 -fno-omit-frame-pointer -Wall -O2 -c slp_dhcp.c -fPIC -DPIC -o .libs/slp_dhcp.o
libtool: compile: clang -DHAVE_CONFIG_H -I. -I.. -I/opt/openssl-1.1.1w/include -DLINUX -O2 -flto -fvisibility=hidden -fsanitize=safe-stack -fstack-clash-protection -fno-common -fstack-protector-strong -D_FORTIFY_SOURCE=2 -fno-omit-frame-pointer -Wall -O2 -c slp_atomic.c -fPIC -DPIC -o .libs/slp_atomic.o
libtool: compile: clang -DHAVE_CONFIG_H -I. -I.. -I/opt/openssl-1.1.1w/include -DLINUX -O2 -flto -fvisibility=hidden -fsanitize=safe-stack -fstack-clash-protection -fno-common -fstack-protector-strong -D_FORTIFY_SOURCE=2 -fno-omit-frame-pointer -Wall -O2 -c slp_debug.c -fPIC -DPIC -o .libs/slp_debug.o
libtool: compile: clang -DHAVE_CONFIG_H -I. -I.. -I/opt/openssl-1.1.1w/include -DLINUX -O2 -flto -fvisibility=hidden -fsanitize=safe-stack -fstack-clash-protection -fno-common -fstack-protector-strong -D_FORTIFY_SOURCE=2 -fno-omit-frame-pointer -Wall -O2 -c slp_linkedlist.c -fPIC -DPIC -o .libs/slp_linkedlist.o
libtool: compile: clang -DHAVE_CONFIG_H -I. -I.. -I/opt/openssl-1.1.1w/include -DLINUX -O2 -flto -fvisibility=hidden -fsanitize=safe-stack -fstack-clash-protection -fno-common -fstack-protector-strong -D_FORTIFY_SOURCE=2 -fno-omit-frame-pointer -Wall -O2 -c slp_iface.c -fPIC -DPIC -o .libs/slp_iface.o
libtool: compile: clang -DHAVE_CONFIG_H -I. -I.. -I/opt/openssl-1.1.1w/include -DLINUX -O2 -flto -fvisibility=hidden -fsanitize=safe-stack -fstack-clash-protection -fno-common -fstack-protector-strong -D_FORTIFY_SOURCE=2 -fno-omit-frame-pointer -Wall -O2 -c slp_linkedlist.c -fPIE -o slp_linkedlist.o >/dev/null 2>&1
/bin/bash ../libtool --tag=CC --mode=compile clang -DHAVE_CONFIG_H -I. -I.. -I/opt/openssl-1.1.1w/include -DLINUX -O2 -flto -fvisibility=hidden -fsanitize=safe-stack -fstack-clash-protection -fno-common -fPIE -fstack-protector-strong -D_FORTIFY_SOURCE=2 -fno-omit-frame-pointer -Wall -O2 -c -o slp_message.lo slp_message.c
libtool: compile: clang -DHAVE_CONFIG_H -I. -I.. -I/opt/openssl-1.1.1w/include -DLINUX -O2 -flto -fvisibility=hidden -fsanitize=safe-stack -fstack-clash-protection -fno-common -fstack-protector-strong -D_FORTIFY_SOURCE=2 -fno-omit-frame-pointer -Wall -O2 -c slp_message.c -fPIC -DPIC -o .libs/slp_message.o
libtool: compile: clang -DHAVE_CONFIG_H -I. -I.. -I/opt/openssl-1.1.1w/include -DLINUX -O2 -flto -fvisibility=hidden -fsanitize=safe-stack -fstack-clash-protection -fno-common -fstack-protector-strong -D_FORTIFY_SOURCE=2 -fno-omit-frame-pointer -Wall -O2 -c slp_buffer.c -fPIE -o slp_buffer.o >/dev/null 2>&1
libtool: compile: clang -DHAVE_CONFIG_H -I. -I.. -I/opt/openssl-1.1.1w/include -DLINUX -O2 -flto -fvisibility=hidden -fsanitize=safe-stack -fstack-clash-protection -fno-common -fstack-protector-strong -D_FORTIFY_SOURCE=2 -fno-omit-frame-pointer -Wall -O2 -c slp_database.c -fPIE -o slp_database.o >/dev/null 2>&1
libtool: compile: clang -DHAVE_CONFIG_H -I. -I.. -I/opt/openssl-1.1.1w/include -DLINUX -O2 -flto -fvisibility=hidden -fsanitize=safe-stack -fstack-clash-protection -fno-common -fstack-protector-strong -D_FORTIFY_SOURCE=2 -fno-omit-frame-pointer -Wall -O2 -c slp_atomic.c -fPIE -o slp_atomic.o >/dev/null 2>&1
libtool: compile: clang -DHAVE_CONFIG_H -I. -I.. -I/opt/openssl-1.1.1w/include -DLINUX -O2 -flto -fvisibility=hidden -fsanitize=safe-stack -fstack-clash-protection -fno-common -fstack-protector-strong -D_FORTIFY_SOURCE=2 -fno-omit-frame-pointer -Wall -O2 -c slp_debug.c -fPIE -o slp_debug.o >/dev/null 2>&1
slp_iface.c:1090:43: warning: expression result unused [-Wunused-value]
1090 | sts = (errno = EINVAL), -1; /* not v4, not v6 */
| ^~
libtool: compile: clang -DHAVE_CONFIG_H -I. -I.. -I/opt/openssl-1.1.1w/include -DLINUX -O2 -flto -fvisibility=hidden -fsanitize=safe-stack -fstack-clash-protection -fno-common -fstack-protector-strong -D_FORTIFY_SOURCE=2 -fno-omit-frame-pointer -Wall -O2 -c slp_dhcp.c -fPIE -o slp_dhcp.o >/dev/null 2>&1
/bin/bash ../libtool --tag=CC --mode=compile clang -DHAVE_CONFIG_H -I. -I.. -I/opt/openssl-1.1.1w/include -DLINUX -O2 -flto -fvisibility=hidden -fsanitize=safe-stack -fstack-clash-protection -fno-common -fPIE -fstack-protector-strong -D_FORTIFY_SOURCE=2 -fno-omit-frame-pointer -Wall -O2 -c -o slp_net.lo slp_net.c
1 warning generated.
libtool: compile: clang -DHAVE_CONFIG_H -I. -I.. -I/opt/openssl-1.1.1w/include -DLINUX -O2 -flto -fvisibility=hidden -fsanitize=safe-stack -fstack-clash-protection -fno-common -fstack-protector-strong -D_FORTIFY_SOURCE=2 -fno-omit-frame-pointer -Wall -O2 -c slp_iface.c -fPIE -o slp_iface.o >/dev/null 2>&1
/bin/bash ../libtool --tag=CC --mode=compile clang -DHAVE_CONFIG_H -I. -I.. -I/opt/openssl-1.1.1w/include -DLINUX -O2 -flto -fvisibility=hidden -fsanitize=safe-stack -fstack-clash-protection -fno-common -fPIE -fstack-protector-strong -D_FORTIFY_SOURCE=2 -fno-omit-frame-pointer -Wall -O2 -c -o slp_network.lo slp_network.c
libtool: compile: clang -DHAVE_CONFIG_H -I. -I.. -I/opt/openssl-1.1.1w/include -DLINUX -O2 -flto -fvisibility=hidden -fsanitize=safe-stack -fstack-clash-protection -fno-common -fstack-protector-strong -D_FORTIFY_SOURCE=2 -fno-omit-frame-pointer -Wall -O2 -c slp_message.c -fPIE -o slp_message.o >/dev/null 2>&1
libtool: compile: clang -DHAVE_CONFIG_H -I. -I.. -I/opt/openssl-1.1.1w/include -DLINUX -O2 -flto -fvisibility=hidden -fsanitize=safe-stack -fstack-clash-protection -fno-common -fstack-protector-strong -D_FORTIFY_SOURCE=2 -fno-omit-frame-pointer -Wall -O2 -c slp_net.c -fPIC -DPIC -o .libs/slp_net.o
libtool: compile: clang -DHAVE_CONFIG_H -I. -I.. -I/opt/openssl-1.1.1w/include -DLINUX -O2 -flto -fvisibility=hidden -fsanitize=safe-stack -fstack-clash-protection -fno-common -fstack-protector-strong -D_FORTIFY_SOURCE=2 -fno-omit-frame-pointer -Wall -O2 -c slp_compare.c -fPIE -o slp_compare.o >/dev/null 2>&1
libtool: compile: clang -DHAVE_CONFIG_H -I. -I.. -I/opt/openssl-1.1.1w/include -DLINUX -O2 -flto -fvisibility=hidden -fsanitize=safe-stack -fstack-clash-protection -fno-common -fstack-protector-strong -D_FORTIFY_SOURCE=2 -fno-omit-frame-pointer -Wall -O2 -c slp_network.c -fPIC -DPIC -o .libs/slp_network.o
/bin/bash ../libtool --tag=CC --mode=compile clang -DHAVE_CONFIG_H -I. -I.. -I/opt/openssl-1.1.1w/include -DLINUX -O2 -flto -fvisibility=hidden -fsanitize=safe-stack -fstack-clash-protection -fno-common -fPIE -fstack-protector-strong -D_FORTIFY_SOURCE=2 -fno-omit-frame-pointer -Wall -O2 -c -o slp_parse.lo slp_parse.c
/bin/bash ../libtool --tag=CC --mode=compile clang -DHAVE_CONFIG_H -I. -I.. -I/opt/openssl-1.1.1w/include -DLINUX -O2 -flto -fvisibility=hidden -fsanitize=safe-stack -fstack-clash-protection -fno-common -fPIE -fstack-protector-strong -D_FORTIFY_SOURCE=2 -fno-omit-frame-pointer -Wall -O2 -c -o slp_pid.lo slp_pid.c
libtool: compile: clang -DHAVE_CONFIG_H -I. -I.. -I/opt/openssl-1.1.1w/include -DLINUX -O2 -flto -fvisibility=hidden -fsanitize=safe-stack -fstack-clash-protection -fno-common -fstack-protector-strong -D_FORTIFY_SOURCE=2 -fno-omit-frame-pointer -Wall -O2 -c slp_parse.c -fPIC -DPIC -o .libs/slp_parse.o
libtool: compile: clang -DHAVE_CONFIG_H -I. -I.. -I/opt/openssl-1.1.1w/include -DLINUX -O2 -flto -fvisibility=hidden -fsanitize=safe-stack -fstack-clash-protection -fno-common -fstack-protector-strong -D_FORTIFY_SOURCE=2 -fno-omit-frame-pointer -Wall -O2 -c slp_pid.c -fPIC -DPIC -o .libs/slp_pid.o
/bin/bash ../libtool --tag=CC --mode=compile clang -DHAVE_CONFIG_H -I. -I.. -I/opt/openssl-1.1.1w/include -DLINUX -O2 -flto -fvisibility=hidden -fsanitize=safe-stack -fstack-clash-protection -fno-common -fPIE -fstack-protector-strong -D_FORTIFY_SOURCE=2 -fno-omit-frame-pointer -Wall -O2 -c -o slp_predicate.lo slp_predicate.c
libtool: compile: clang -DHAVE_CONFIG_H -I. -I.. -I/opt/openssl-1.1.1w/include -DLINUX -O2 -flto -fvisibility=hidden -fsanitize=safe-stack -fstack-clash-protection -fno-common -fstack-protector-strong -D_FORTIFY_SOURCE=2 -fno-omit-frame-pointer -Wall -O2 -c slp_predicate.c -fPIC -DPIC -o .libs/slp_predicate.o
/bin/bash ../libtool --tag=CC --mode=compile clang -DHAVE_CONFIG_H -I. -I.. -I/opt/openssl-1.1.1w/include -DLINUX -O2 -flto -fvisibility=hidden -fsanitize=safe-stack -fstack-clash-protection -fno-common -fPIE -fstack-protector-strong -D_FORTIFY_SOURCE=2 -fno-omit-frame-pointer -Wall -O2 -c -o slp_property.lo slp_property.c
libtool: compile: clang -DHAVE_CONFIG_H -I. -I.. -I/opt/openssl-1.1.1w/include -DLINUX -O2 -flto -fvisibility=hidden -fsanitize=safe-stack -fstack-clash-protection -fno-common -fstack-protector-strong -D_FORTIFY_SOURCE=2 -fno-omit-frame-pointer -Wall -O2 -c slp_property.c -fPIC -DPIC -o .libs/slp_property.o
libtool: compile: clang -DHAVE_CONFIG_H -I. -I.. -I/opt/openssl-1.1.1w/include -DLINUX -O2 -flto -fvisibility=hidden -fsanitize=safe-stack -fstack-clash-protection -fno-common -fstack-protector-strong -D_FORTIFY_SOURCE=2 -fno-omit-frame-pointer -Wall -O2 -c slp_parse.c -fPIE -o slp_parse.o >/dev/null 2>&1
libtool: compile: clang -DHAVE_CONFIG_H -I. -I.. -I/opt/openssl-1.1.1w/include -DLINUX -O2 -flto -fvisibility=hidden -fsanitize=safe-stack -fstack-clash-protection -fno-common -fstack-protector-strong -D_FORTIFY_SOURCE=2 -fno-omit-frame-pointer -Wall -O2 -c slp_pid.c -fPIE -o slp_pid.o >/dev/null 2>&1
/bin/bash ../libtool --tag=CC --mode=compile clang -DHAVE_CONFIG_H -I. -I.. -I/opt/openssl-1.1.1w/include -DLINUX -O2 -flto -fvisibility=hidden -fsanitize=safe-stack -fstack-clash-protection -fno-common -fPIE -fstack-protector-strong -D_FORTIFY_SOURCE=2 -fno-omit-frame-pointer -Wall -O2 -c -o slp_thread.lo slp_thread.c
libtool: compile: clang -DHAVE_CONFIG_H -I. -I.. -I/opt/openssl-1.1.1w/include -DLINUX -O2 -flto -fvisibility=hidden -fsanitize=safe-stack -fstack-clash-protection -fno-common -fstack-protector-strong -D_FORTIFY_SOURCE=2 -fno-omit-frame-pointer -Wall -O2 -c slp_network.c -fPIE -o slp_network.o >/dev/null 2>&1
libtool: compile: clang -DHAVE_CONFIG_H -I. -I.. -I/opt/openssl-1.1.1w/include -DLINUX -O2 -flto -fvisibility=hidden -fsanitize=safe-stack -fstack-clash-protection -fno-common -fstack-protector-strong -D_FORTIFY_SOURCE=2 -fno-omit-frame-pointer -Wall -O2 -c slp_net.c -fPIE -o slp_net.o >/dev/null 2>&1
libtool: compile: clang -DHAVE_CONFIG_H -I. -I.. -I/opt/openssl-1.1.1w/include -DLINUX -O2 -flto -fvisibility=hidden -fsanitize=safe-stack -fstack-clash-protection -fno-common -fstack-protector-strong -D_FORTIFY_SOURCE=2 -fno-omit-frame-pointer -Wall -O2 -c slp_predicate.c -fPIE -o slp_predicate.o >/dev/null 2>&1
libtool: compile: clang -DHAVE_CONFIG_H -I. -I.. -I/opt/openssl-1.1.1w/include -DLINUX -O2 -flto -fvisibility=hidden -fsanitize=safe-stack -fstack-clash-protection -fno-common -fstack-protector-strong -D_FORTIFY_SOURCE=2 -fno-omit-frame-pointer -Wall -O2 -c slp_thread.c -fPIC -DPIC -o .libs/slp_thread.o
/bin/bash ../libtool --tag=CC --mode=compile clang -DHAVE_CONFIG_H -I. -I.. -I/opt/openssl-1.1.1w/include -DLINUX -O2 -flto -fvisibility=hidden -fsanitize=safe-stack -fstack-clash-protection -fno-common -fPIE -fstack-protector-strong -D_FORTIFY_SOURCE=2 -fno-omit-frame-pointer -Wall -O2 -c -o slp_auth.lo slp_auth.c
/bin/bash ../libtool --tag=CC --mode=compile clang -DHAVE_CONFIG_H -I. -I.. -I/opt/openssl-1.1.1w/include -DLINUX -O2 -flto -fvisibility=hidden -fsanitize=safe-stack -fstack-clash-protection -fno-common -fPIE -fstack-protector-strong -D_FORTIFY_SOURCE=2 -fno-omit-frame-pointer -Wall -O2 -c -o slp_crypto.lo slp_crypto.c
/bin/bash ../libtool --tag=CC --mode=compile clang -DHAVE_CONFIG_H -I. -I.. -I/opt/openssl-1.1.1w/include -DLINUX -O2 -flto -fvisibility=hidden -fsanitize=safe-stack -fstack-clash-protection -fno-common -fPIE -fstack-protector-strong -D_FORTIFY_SOURCE=2 -fno-omit-frame-pointer -Wall -O2 -c -o slp_spi.lo slp_spi.c
libtool: compile: clang -DHAVE_CONFIG_H -I. -I.. -I/opt/openssl-1.1.1w/include -DLINUX -O2 -flto -fvisibility=hidden -fsanitize=safe-stack -fstack-clash-protection -fno-common -fstack-protector-strong -D_FORTIFY_SOURCE=2 -fno-omit-frame-pointer -Wall -O2 -c slp_property.c -fPIE -o slp_property.o >/dev/null 2>&1
libtool: compile: clang -DHAVE_CONFIG_H -I. -I.. -I/opt/openssl-1.1.1w/include -DLINUX -O2 -flto -fvisibility=hidden -fsanitize=safe-stack -fstack-clash-protection -fno-common -fstack-protector-strong -D_FORTIFY_SOURCE=2 -fno-omit-frame-pointer -Wall -O2 -c slp_crypto.c -fPIC -DPIC -o .libs/slp_crypto.o
libtool: compile: clang -DHAVE_CONFIG_H -I. -I.. -I/opt/openssl-1.1.1w/include -DLINUX -O2 -flto -fvisibility=hidden -fsanitize=safe-stack -fstack-clash-protection -fno-common -fstack-protector-strong -D_FORTIFY_SOURCE=2 -fno-omit-frame-pointer -Wall -O2 -c slp_spi.c -fPIC -DPIC -o .libs/slp_spi.o
libtool: compile: clang -DHAVE_CONFIG_H -I. -I.. -I/opt/openssl-1.1.1w/include -DLINUX -O2 -flto -fvisibility=hidden -fsanitize=safe-stack -fstack-clash-protection -fno-common -fstack-protector-strong -D_FORTIFY_SOURCE=2 -fno-omit-frame-pointer -Wall -O2 -c slp_auth.c -fPIC -DPIC -o .libs/slp_auth.o
/bin/bash ../libtool --tag=CC --mode=compile clang -DHAVE_CONFIG_H -I. -I.. -I/opt/openssl-1.1.1w/include -DLINUX -O2 -flto -fvisibility=hidden -fsanitize=safe-stack -fstack-clash-protection -fno-common -fPIE -fstack-protector-strong -D_FORTIFY_SOURCE=2 -fno-omit-frame-pointer -Wall -O2 -c -o slp_v2message.lo slp_v2message.c
libtool: compile: clang -DHAVE_CONFIG_H -I. -I.. -I/opt/openssl-1.1.1w/include -DLINUX -O2 -flto -fvisibility=hidden -fsanitize=safe-stack -fstack-clash-protection -fno-common -fstack-protector-strong -D_FORTIFY_SOURCE=2 -fno-omit-frame-pointer -Wall -O2 -c slp_v2message.c -fPIC -DPIC -o .libs/slp_v2message.o
/bin/bash ../libtool --tag=CC --mode=compile clang -DHAVE_CONFIG_H -I. -I.. -I/opt/openssl-1.1.1w/include -DLINUX -O2 -flto -fvisibility=hidden -fsanitize=safe-stack -fstack-clash-protection -fno-common -fPIE -fstack-protector-strong -D_FORTIFY_SOURCE=2 -fno-omit-frame-pointer -Wall -O2 -c -o slp_xid.lo slp_xid.c
libtool: compile: clang -DHAVE_CONFIG_H -I. -I.. -I/opt/openssl-1.1.1w/include -DLINUX -O2 -flto -fvisibility=hidden -fsanitize=safe-stack -fstack-clash-protection -fno-common -fstack-protector-strong -D_FORTIFY_SOURCE=2 -fno-omit-frame-pointer -Wall -O2 -c slp_thread.c -fPIE -o slp_thread.o >/dev/null 2>&1
libtool: compile: clang -DHAVE_CONFIG_H -I. -I.. -I/opt/openssl-1.1.1w/include -DLINUX -O2 -flto -fvisibility=hidden -fsanitize=safe-stack -fstack-clash-protection -fno-common -fstack-protector-strong -D_FORTIFY_SOURCE=2 -fno-omit-frame-pointer -Wall -O2 -c slp_xid.c -fPIC -DPIC -o .libs/slp_xid.o
slp_crypto.c:91:13: error: incomplete definition of type 'SLPCryptoDSAKey' (aka 'struct dsa_st')
91 | result->p = BN_dup(dsa->p);
| ~~~~~~^
/opt/openssl-1.1.1w/include/openssl/ossl_typ.h:107:16: note: forward declaration of 'struct dsa_st'
107 | typedef struct dsa_st DSA;
| ^
slp_crypto.c:91:29: error: incomplete definition of type 'SLPCryptoDSAKey' (aka 'struct dsa_st')
91 | result->p = BN_dup(dsa->p);
| ~~~^
/opt/openssl-1.1.1w/include/openssl/ossl_typ.h:107:16: note: forward declaration of 'struct dsa_st'
107 | typedef struct dsa_st DSA;
| ^
slp_crypto.c:92:13: error: incomplete definition of type 'SLPCryptoDSAKey' (aka 'struct dsa_st')
92 | result->q = BN_dup(dsa->q);
| ~~~~~~^
/opt/openssl-1.1.1w/include/openssl/ossl_typ.h:107:16: note: forward declaration of 'struct dsa_st'
107 | typedef struct dsa_st DSA;
| ^
slp_crypto.c:92:29: error: incomplete definition of type 'SLPCryptoDSAKey' (aka 'struct dsa_st')
92 | result->q = BN_dup(dsa->q);
| ~~~^
/opt/openssl-1.1.1w/include/openssl/ossl_typ.h:107:16: note: forward declaration of 'struct dsa_st'
107 | typedef struct dsa_st DSA;
| ^
slp_crypto.c:93:13: error: incomplete definition of type 'SLPCryptoDSAKey' (aka 'struct dsa_st')
93 | result->g = BN_dup(dsa->g);
| ~~~~~~^
/opt/openssl-1.1.1w/include/openssl/ossl_typ.h:107:16: note: forward declaration of 'struct dsa_st'
107 | typedef struct dsa_st DSA;
| ^
slp_crypto.c:93:29: error: incomplete definition of type 'SLPCryptoDSAKey' (aka 'struct dsa_st')
93 | result->g = BN_dup(dsa->g);
| ~~~^
/opt/openssl-1.1.1w/include/openssl/ossl_typ.h:107:16: note: forward declaration of 'struct dsa_st'
107 | typedef struct dsa_st DSA;
| ^
slp_crypto.c:94:13: error: incomplete definition of type 'SLPCryptoDSAKey' (aka 'struct dsa_st')
94 | result->priv_key = BN_dup(dsa->priv_key);
| ~~~~~~^
/opt/openssl-1.1.1w/include/openssl/ossl_typ.h:107:16: note: forward declaration of 'struct dsa_st'
107 | typedef struct dsa_st DSA;
| ^
slp_crypto.c:94:36: error: incomplete definition of type 'SLPCryptoDSAKey' (aka 'struct dsa_st')
94 | result->priv_key = BN_dup(dsa->priv_key);
| ~~~^
/opt/openssl-1.1.1w/include/openssl/ossl_typ.h:107:16: note: forward declaration of 'struct dsa_st'
107 | typedef struct dsa_st DSA;
| ^
slp_crypto.c:95:13: error: incomplete definition of type 'SLPCryptoDSAKey' (aka 'struct dsa_st')
95 | result->pub_key = BN_dup(dsa->pub_key);
| ~~~~~~^
/opt/openssl-1.1.1w/include/openssl/ossl_typ.h:107:16: note: forward declaration of 'struct dsa_st'
107 | typedef struct dsa_st DSA;
| ^
slp_crypto.c:95/bin/bash ../libtool --tag=CC --mode=compile clang -DHAVE_CONFIG_H -I. -I.. -I/opt/openssl-1.1.1w/include -DLINUX -O2 -flto -fvisibility=hidden -fsanitize=safe-stack -fstack-clash-protection -fno-common -fPIE -fstack-protector-strong -D_FORTIFY_SOURCE=2 -fno-omit-frame-pointer -Wall -O2 -c -o slp_xmalloc.lo slp_xmalloc.c
:35: error: incomplete definition of type 'SLPCryptoDSAKey' (aka 'struct dsa_st')
95 | result->pub_key = BN_dup(dsa->pub_key);
| ~~~^
/opt/openssl-1.1.1w/include/openssl/ossl_typ.h:107:16: note: forward declaration of 'struct dsa_st'
107 | typedef struct dsa_st DSA;
| ^
10 errors generated.
make[2]: *** [Makefile:482: slp_crypto.lo] Error 1
make[2]: *** Waiting for unfinished jobs....
libtool: compile: clang -DHAVE_CONFIG_H -I. -I.. -I/opt/openssl-1.1.1w/include -DLINUX -O2 -flto -fvisibility=hidden -fsanitize=safe-stack -fstack-clash-protection -fno-common -fstack-protector-strong -D_FORTIFY_SOURCE=2 -fno-omit-frame-pointer -Wall -O2 -c slp_xmalloc.c -fPIC -DPIC -o .libs/slp_xmalloc.o
libtool: compile: clang -DHAVE_CONFIG_H -I. -I.. -I/opt/openssl-1.1.1w/include -DLINUX -O2 -flto -fvisibility=hidden -fsanitize=safe-stack -fstack-clash-protection -fno-common -fstack-protector-strong -D_FORTIFY_SOURCE=2 -fno-omit-frame-pointer -Wall -O2 -c slp_v2message.c -fPIE -o slp_v2message.o >/dev/null 2>&1
libtool: compile: clang -DHAVE_CONFIG_H -I. -I.. -I/opt/openssl-1.1.1w/include -DLINUX -O2 -flto -fvisibility=hidden -fsanitize=safe-stack -fstack-clash-protection -fno-common -fstack-protector-strong -D_FORTIFY_SOURCE=2 -fno-omit-frame-pointer -Wall -O2 -c slp_spi.c -fPIE -o slp_spi.o >/dev/null 2>&1
libtool: compile: clang -DHAVE_CONFIG_H -I. -I.. -I/opt/openssl-1.1.1w/include -DLINUX -O2 -flto -fvisibility=hidden -fsanitize=safe-stack -fstack-clash-protection -fno-common -fstack-protector-strong -D_FORTIFY_SOURCE=2 -fno-omit-frame-pointer -Wall -O2 -c slp_xid.c -fPIE -o slp_xid.o >/dev/null 2>&1
libtool: compile: clang -DHAVE_CONFIG_H -I. -I.. -I/opt/openssl-1.1.1w/include -DLINUX -O2 -flto -fvisibility=hidden -fsanitize=safe-stack -fstack-clash-protection -fno-common -fstack-protector-strong -D_FORTIFY_SOURCE=2 -fno-omit-frame-pointer -Wall -O2 -c slp_auth.c -fPIE -o slp_auth.o >/dev/null 2>&1
libtool: compile: clang -DHAVE_CONFIG_H -I. -I.. -I/opt/openssl-1.1.1w/include -DLINUX -O2 -flto -fvisibility=hidden -fsanitize=safe-stack -fstack-clash-protection -fno-common -fstack-protector-strong -D_FORTIFY_SOURCE=2 -fno-omit-frame-pointer -Wall -O2 -c slp_xmalloc.c -fPIE -o slp_xmalloc.o >/dev/null 2>&1
make[2]: Leaving directory '/tmp/openslp-build/openslp-2.0.0/common'
make[1]: *** [Makefile:310: all-recursive] Error 1
make[1]: Leaving directory '/tmp/openslp-build/openslp-2.0.0'
make: *** [Makefile:241: all] Error 2
`

[urbasus]

The dsa_st is supposedly defined in OpenSSL source file crypto/dsa/dsa_local.h. You could try force include it when compiling. Alternatively add include directives to it in files that error because of it. The latter is what I imagine the patch would be, unless there are more errors to deal with.