[Sappykun]

I'm trying to compile this extension to see if I can't use it in my Resizable Sprays plugin.

Running the AMBuild script produces the following error on both GCC 7.5 and 10.3:

Spoiler

PHP Code:

In file included from /home/l4d2/metamod/sourcemod/public/IExtensionSys.h:37:0,
                 from /home/l4d2/metamod/sourcemod/public/smsdk_ext.h:41,
                 from /home/l4d2/metamod/sourcemod/public/smsdk_ext.cpp:34:
/home/l4d2/metamod/sourcemod/public/amtl/amtl/am-string.h: In function &#8216;std::unique_ptr<char []> ke::detail::SprintfArgsImpl(size_t*, const char*, va_list)’:
/home/l4d2/metamod/sourcemod/public/amtl/amtl/am-string.h:110:28: error: &#8216;make_unique’ is not a member of ‘std’
         auto buffer = std::make_unique<char[]>(1);
                            ^~~~~~~~~~~
/home/l4d2/metamod/sourcemod/public/amtl/amtl/am-string.h:110:28: note: suggested alternative: &#8216;__unique’
         auto buffer = std::make_unique<char[]>(1);
                            ^~~~~~~~~~~
                            __unique
/home/l4d2/metamod/sourcemod/public/amtl/amtl/am-string.h:110:40: error: expected primary-expression before &#8216;char’
         auto buffer = std::make_unique<char[]>(1);
                                        ^~~~
/home/l4d2/metamod/sourcemod/public/amtl/amtl/am-string.h:116:24: error: &#8216;make_unique’ is not a member of ‘std’
     auto buffer = std::make_unique<char[]>(len + 1);
                        ^~~~~~~~~~~
/home/l4d2/metamod/sourcemod/public/amtl/amtl/am-string.h:116:24: note: suggested alternative: &#8216;__unique’
     auto buffer = std::make_unique<char[]>(len + 1);
                        ^~~~~~~~~~~
                        __unique
/home/l4d2/metamod/sourcemod/public/amtl/amtl/am-string.h:116:36: error: expected primary-expression before &#8216;char’
     auto buffer = std::make_unique<char[]>(len + 1);
                                    ^~~~
In file included from /home/l4d2/metamod/hl2sdk-l4d2/public/tier1/utlvector.h:23:0,
                 from /home/l4d2/metamod/hl2sdk-l4d2/public/tier1/convar.h:21,
                 from /home/l4d2/metamod/hl2sdk-l4d2/public/eiface.h:16,
                 from /home/l4d2/metamod/metamod-source/core/ISmmAPI.h:45,
                 from /home/l4d2/metamod/metamod-source/core/ISmmPlugin.h:39,
                 from /home/l4d2/metamod/sourcemod/public/smsdk_ext.h:100,
                 from /home/l4d2/metamod/sourcemod/public/smsdk_ext.cpp:34:
/home/l4d2/metamod/hl2sdk-l4d2/public/tier1/utlmemory.h: In member function &#8216;void CUtlMemory<T, I>::Swap(CUtlMemory<T, I>&)’:
/home/l4d2/metamod/hl2sdk-l4d2/public/tier1/utlmemory.h:330:2: error: there are no arguments to &#8216;V_swap’ that depend on a template parameter, so a declaration of ‘V_swap’ must be available [-fpermissive]
  V_swap( m_nGrowSize, mem.m_nGrowSize );
  ^~~~~~
/home/l4d2/metamod/hl2sdk-l4d2/public/tier1/utlmemory.h:330:2: note: (if you use &#8216;-fpermissive’, G++ will accept your code, but allowing the use of an undeclared name is deprecated)
/home/l4d2/metamod/hl2sdk-l4d2/public/tier1/utlmemory.h:332:2: error: there are no arguments to &#8216;V_swap’ that depend on a template parameter, so a declaration of ‘V_swap’ must be available [-fpermissive]
  V_swap( m_nAllocationCount, mem.m_nAllocationCount );
  ^~~~~~
Build failed: latedl.ext.2.l4d2/_home_l4d2_metamod_sourcemod_public_smsdk_ext.o 


What do I need to do to get this to compile correctly?

I am hoping to build this on Ubuntu 18.04 for TF2 and L4D2.