Linker cannot find ACE_Task_Base::activate

[John Lindal]

I installed libace-6.3.3 & libace-dev -- version "6.3.3+dfsg-1"

When I try to build a program requiring ACE, I get the following error from the linker:

undefined reference to `ACE_Task_Base::activate(long, int, int, long, int, ACE_Task_Base*, int*, void**, unsigned long*, int*, char const**)'

"uname -a" reports:

Linux d42de53aa7a6 4.1.13-boot2docker #1 SMP Fri Nov 20 19:05:50 UTC 2015 x86_64 x86_64 x86_64 GNU/Linux

[John Lindal (jafl5272)]

This problem persists with libace-6.4.5 with:

Linux ubuntu-VirtualBox 4.15.0-20-generic #21-Ubuntu SMP Tue Apr 24 06:16:15 UTC 2018 x86_64 x86_64 x86_64 GNU/Linux

Using objdump, I discovered that the actual signature of the function inside the .so file is:

ACE_Task_Base::activate(long, int, int, long, int, ACE_Task_Base*, unsigned long*, void**, unsigned long*, unsigned long*, char const**)

This has "unsigned long" in a couple of places where the linker expects "int"

[John Lindal (jafl5272)]

Closed as invalid. The problem was that I tried to compile without threads, and this caused the signature for ACE_Task_Base::activate() to be different.