GCC 6.2 toolchain for AmigaOS 3

[girv]

bash 5.2, from homebrew

$ $(brew --prefix)/bin/bash --version
GNU bash, version 5.2.15(1)-release (x86_64-apple-darwin21.6.0)

[Samurai_Crow]

Ok. Sorry. I'm out of ideas.

[girv]

The failing command is a configure in gcc/isl like this. I've added some quotes etc. so I could run it standalone to test.

CC=gcc-12 CXX=g++-12 $(brew --prefix)/bin/bash 
/Users/girv/projects/_lib/gcc-bebbo/amiga-gcc/projects/gcc/isl/configure 
--srcdir=/Users/girv/projects/_lib/gcc-bebbo/amiga-gcc/projects/gcc/isl 
--cache-file=./config.cache 
--prefix=/opt/amiga 
--enable-version-specific-runtime-libs 
--disable-libssp 
--disable-nls 
--with-headers=/Users/girv/projects/_lib/gcc-bebbo/amiga-gcc/projects/newlib-cygwin/newlib/libc/sys/amigaos/include/ 
--disable-shared 
--enable-threads=no 
--with-stage1-ldflags="-dynamic-libgcc -dynamic-libstdc++" 
--with-boot-ldflags="-dynamic-libgcc -dynamic-libstdc++" 
--with-gmp=/usr/local 
--with-mpfr=/usr/local 
--with-mpc=/usr/local 
--enable-languages=c,c++,lto,objc 
--program-transform-name="s&^&m68k-amigaos-&" 
--disable-option-checking 
--build=x86_64-apple-darwin21.6.0 
--host=x86_64-apple-darwin21.6.0 
--target=m68k-amigaos 
--disable-shared

[girv]

Stand down. I deleted and recloned amiga-gcc and it built OK. I thought I'd done that already though, but perhaps not. Must have been something left over from a previous build

$ ./m68k-amigaos-gcc --version
m68k-amigaos-gcc (GCC) 6.5.0b 230920120617

[girv]

Is 6.5.0b the only version available at the moment?

[arti]

Looks like mutex isn't supported in gcc 6.5.

Will --enable-threads=posix work here?

[bebbo]

Originally Posted by arti

Looks like mutex isn't supported in gcc 6.5.

Will --enable-threads=posix work here?

#include <pthread.h>

and link with -lpthread


That options adds thread safety to stdio and some other stuff.

[bebbo]

Originally Posted by girv

I'm trying to build master on macOS Monterey. I'd managed to do this before without issue.

isl@0.18 is disabled in homebrew now, but I managed to get it installed by changing the system date temporarily.

Using the script posted in this thread previously: https://gist.github.com/rrs42/5e5b7b...b89d0f4dd3a2a8
with CC=gcc-12 CXX=g++-12 gmake all SHELL=$(brew --prefix)/bin/bash

It fails on building gcc with:

...
make use of stdint.h in include/isl/stdint.h (assuming C99 compatible system)
checking which gmp to use... system
checking gmp.h usability... no
checking gmp.h presence... no
checking for gmp.h... no
configure: error: gmp.h header not found
gmake[1]: *** [Makefile:4921: configure-isl] Error 1
make gcc...failed

bison and texinfo paths are set.
isl@0.18 and gmp are linked in brew.
gmp.h exists at /usr/local/Cellar/gmp/6.3.0/include/gmp.h

I'm guessing theres some issue with isl@0.18 and the installed version of gmp? Any ideas?

Also - is the gcc 13 branch gone now?

Despite that the wanky shaker os isn't supported very well, there are resolved tickets regarding isl/gmp -> search the issues.


And the gcc branch amiga13.1 does still exist.

[girv]

Originally Posted by bebbo

there are resolved tickets regarding isl/gmp -> search the issues.

Thanks. I'd had a look at those before posting, but in the end it was something local broken. A delete and clone made the problem go away.

Originally Posted by bebbo

And the gcc branch amiga13.1 does still exist.

Which repo is that in?
I don't see it in https://github.com/bebbo/amiga-gcc/branches

[Samurai_Crow]

https://github.com/bebbo/gcc/tree/amiga13.1 perhaps?

[girv]

Originally Posted by Samurai_Crow

https://github.com/bebbo/gcc/tree/amiga13.1 perhaps?

Got it. I didn't realise that was used in amiga-gcc project.

[arti]

Clib2 fails to build (gcc 6.5). NDK3.2 was used by default.

make clib2...failed
#include <...> search starts here:
 include
 .
 /opt/amiga/include
 /opt/amiga/lib/gcc/m68k-amigaos/6.5.0b/include
 /opt/amiga/m68k-amigaos/ndk-include
 /opt/amiga/m68k-amigaos/sys-include
 /opt/amiga/m68k-amigaos/include
End of search list.
GNU C11 (GCC) version 6.5.0b 230920120617 (m68k-amigaos)
        compiled by GNU C version 8.3.0, GMP version 6.1.2, MPFR version 4.0.2, MPC version 1.1.0, isl version none
GGC heuristics: --param ggc-min-expand=100 --param ggc-min-heapsize=131072
Compiler executable checksum: 868b4f8c50bc6ab2380344e3ca361ee1
COLLECT_GCC_OPTIONS='-o' 'large_data_020/libm_objs/complex_crealf.o' '-c' '-Wall' '-Wextra' '-Wpointer-arith' '-Wsign-compare' '-Wmissing-prototypes' '-Wundef' '-Wbad-function-cast' '-Wmissing-declarations' '-Wunused' '-O' '-fomit-frame-pointer' '-finline-functions' '-fno-builtin' '-fno-common' '-D' 'NDEBUG' '-D' 'M68020' '-D' 'USE_64_BIT_INTS' '-I' 'include' '-I' '.' '-I' 'netinclude' '-m68020-60' '-v' '-msoft-float' '-D' 'IEEE_FLOATING_POINT_SUPPORT'
 /opt/amiga/lib/gcc/m68k-amigaos/6.5.0b/../../../../m68k-amigaos/bin/as --traditional-format -m68020 -o large_data_020/libm_objs/complex_crealf.o /tmp/ccpGb7CP.s
COMPILER_PATH=/opt/amiga/libexec/gcc/m68k-amigaos/6.5.0b/:/opt/amiga/libexec/gcc/:/opt/amiga/lib/gcc/m68k-amigaos/6.5.0b/../../../../m68k-amigaos/bin/
LIBRARY_PATH=/opt/amiga/lib/gcc/m68k-amigaos/6.5.0b/:/opt/amiga/lib/gcc/:/opt/amiga/lib/gcc/m68k-amigaos/6.5.0b/../../../../m68k-amigaos/lib/
COLLECT_GCC_OPTIONS='-o' 'large_data_020/libm_objs/complex_crealf.o' '-c' '-Wall' '-Wextra' '-Wpointer-arith' '-Wsign-compare' '-Wmissing-prototypes' '-Wundef' '-Wbad-function-cast' '-Wmissing-declarations' '-Wunused' '-O' '-fomit-frame-pointer' '-finline-functions' '-fno-builtin' '-fno-common' '-D' 'NDEBUG' '-D' 'M68020' '-D' 'USE_64_BIT_INTS' '-I' 'include' '-I' '.' '-I' 'netinclude' '-m68020-60' '-v' '-msoft-float' '-D' 'IEEE_FLOATING_POINT_SUPPORT'
Compiling complex_creall.c [large_data_020:m]
Using built-in specs.
COLLECT_GCC=m68k-amigaos-gcc
Target: m68k-amigaos
Configured with: /mnt/d/dev/gcc/amiga-gcc/projects/gcc/configure --prefix=/opt/amiga --target=m68k-amigaos --enable-languages=c,c++,objc --enable-version-specific-runtime-libs --disable-libssp --disable-nls --with-headers=/mnt/d/dev/gcc/amiga-gcc/projects/newlib-cygwin/newlib/libc/sys/amigaos/include/ --disable-shared --enable-threads=no --with-stage1-ldflags='-dynamic-libgcc -dynamic-libstdc++' --with-boot-ldflags='-dynamic-libgcc -dynamic-libstdc++'
Thread model: single
gcc version 6.5.0b 230920120617 (GCC) 
COLLECT_GCC_OPTIONS='-o' 'large_data_020/libm_objs/complex_creall.o' '-c' '-Wall' '-Wextra' '-Wpointer-arith' '-Wsign-compare' '-Wmissing-prototypes' '-Wundef' '-Wbad-function-cast' '-Wmissing-declarations' '-Wunused' '-O' '-fomit-frame-pointer' '-finline-functions' '-fno-builtin' '-fno-common' '-D' 'NDEBUG' '-D' 'M68020' '-D' 'USE_64_BIT_INTS' '-I' 'include' '-I' '.' '-I' 'netinclude' '-m68020-60' '-v' '-msoft-float' '-D' 'IEEE_FLOATING_POINT_SUPPORT'
 /opt/amiga/libexec/gcc/m68k-amigaos/6.5.0b/cc1 -quiet -v -I include -I . -I netinclude -iprefix /opt/amiga/lib/gcc/m68k-amigaos/6.5.0b/ -Dmc68020 -D__mc68020__ -D__mc68020 -isystem /opt/amiga/include -D NDEBUG -D M68020 -D USE_64_BIT_INTS -D IEEE_FLOATING_POINT_SUPPORT complex_creall.c -quiet -dumpbase complex_creall.c -m68020-60 -msoft-float -auxbase-strip large_data_020/libm_objs/complex_creall.o -O -Wall -Wextra -Wpointer-arith -Wsign-compare -Wmissing-prototypes -Wundef -Wbad-function-cast -Wmissing-declarations -Wunused -version -fomit-frame-pointer -finline-functions -fno-builtin -fno-common -o /tmp/ccNfd5IV.s
GNU C11 (GCC) version 6.5.0b 230920120617 (m68k-amigaos)
        compiled by GNU C version 8.3.0, GMP version 6.1.2, MPFR version 4.0.2, MPC version 1.1.0, isl version none
GGC heuristics: --param ggc-min-expand=100 --param ggc-min-heapsize=131072
ignoring nonexistent directory "/opt/amiga/libexec/gcc/m68k-amigaos/lib/gcc/m68k-amigaos/6.5.0b/include"
ignoring nonexistent directory "/opt/amiga/libexec/gcc/m68k-amigaos/m68k-amigaos/ndk-include"
ignoring nonexistent directory "/opt/amiga/libexec/gcc/m68k-amigaos/m68k-amigaos/sys-include"
ignoring nonexistent directory "/opt/amiga/libexec/gcc/m68k-amigaos/m68k-amigaos/include"
ignoring nonexistent directory "netinclude"
#include "..." search starts here:
#include <...> search starts here:
 include
 .
 /opt/amiga/include
 /opt/amiga/lib/gcc/m68k-amigaos/6.5.0b/include
 /opt/amiga/m68k-amigaos/ndk-include
 /opt/amiga/m68k-amigaos/sys-include
 /opt/amiga/m68k-amigaos/include
End of search list.
GNU C11 (GCC) version 6.5.0b 230920120617 (m68k-amigaos)
        compiled by GNU C version 8.3.0, GMP version 6.1.2, MPFR version 4.0.2, MPC version 1.1.0, isl version none
GGC heuristics: --param ggc-min-expand=100 --param ggc-min-heapsize=131072
Compiler executable checksum: 868b4f8c50bc6ab2380344e3ca361ee1
COLLECT_GCC_OPTIONS='-o' 'large_data_020/libm_objs/complex_creall.o' '-c' '-Wall' '-Wextra' '-Wpointer-arith' '-Wsign-compare' '-Wmissing-prototypes' '-Wundef' '-Wbad-function-cast' '-Wmissing-declarations' '-Wunused' '-O' '-fomit-frame-pointer' '-finline-functions' '-fno-builtin' '-fno-common' '-D' 'NDEBUG' '-D' 'M68020' '-D' 'USE_64_BIT_INTS' '-I' 'include' '-I' '.' '-I' 'netinclude' '-m68020-60' '-v' '-msoft-float' '-D' 'IEEE_FLOATING_POINT_SUPPORT'
 /opt/amiga/lib/gcc/m68k-amigaos/6.5.0b/../../../../m68k-amigaos/bin/as --traditional-format -m68020 -o large_data_020/libm_objs/complex_creall.o /tmp/ccNfd5IV.s
COMPILER_PATH=/opt/amiga/libexec/gcc/m68k-amigaos/6.5.0b/:/opt/amiga/libexec/gcc/:/opt/amiga/lib/gcc/m68k-amigaos/6.5.0b/../../../../m68k-amigaos/bin/
LIBRARY_PATH=/opt/amiga/lib/gcc/m68k-amigaos/6.5.0b/:/opt/amiga/lib/gcc/:/opt/amiga/lib/gcc/m68k-amigaos/6.5.0b/../../../../m68k-amigaos/lib/
COLLECT_GCC_OPTIONS='-o' 'large_data_020/libm_objs/complex_creall.o' '-c' '-Wall' '-Wextra' '-Wpointer-arith' '-Wsign-compare' '-Wmissing-prototypes' '-Wundef' '-Wbad-function-cast' '-Wmissing-declarations' '-Wunused' '-O' '-fomit-frame-pointer' '-finline-functions' '-fno-builtin' '-fno-common' '-D' 'NDEBUG' '-D' 'M68020' '-D' 'USE_64_BIT_INTS' '-I' 'include' '-I' '.' '-I' 'netinclude' '-m68020-60' '-v' '-msoft-float' '-D' 'IEEE_FLOATING_POINT_SUPPORT'
Compiling fenv_feclearexcept.c [large_data_020:m]
Using built-in specs.
COLLECT_GCC=m68k-amigaos-gcc
Target: m68k-amigaos
Configured with: /mnt/d/dev/gcc/amiga-gcc/projects/gcc/configure --prefix=/opt/amiga --target=m68k-amigaos --enable-languages=c,c++,objc --enable-version-specific-runtime-libs --disable-libssp --disable-nls --with-headers=/mnt/d/dev/gcc/amiga-gcc/projects/newlib-cygwin/newlib/libc/sys/amigaos/include/ --disable-shared --enable-threads=no --with-stage1-ldflags='-dynamic-libgcc -dynamic-libstdc++' --with-boot-ldflags='-dynamic-libgcc -dynamic-libstdc++'
Thread model: single
gcc version 6.5.0b 230920120617 (GCC) 
COLLECT_GCC_OPTIONS='-o' 'large_data_020/libm_objs/fenv_feclearexcept.o' '-c' '-Wall' '-Wextra' '-Wpointer-arith' '-Wsign-compare' '-Wmissing-prototypes' '-Wundef' '-Wbad-function-cast' '-Wmissing-declarations' '-Wunused' '-O' '-fomit-frame-pointer' '-finline-functions' '-fno-builtin' '-fno-common' '-D' 'NDEBUG' '-D' 'M68020' '-D' 'USE_64_BIT_INTS' '-I' 'include' '-I' '.' '-I' 'netinclude' '-m68020-60' '-v' '-msoft-float' '-D' 'IEEE_FLOATING_POINT_SUPPORT'
 /opt/amiga/libexec/gcc/m68k-amigaos/6.5.0b/cc1 -quiet -v -I include -I . -I netinclude -iprefix /opt/amiga/lib/gcc/m68k-amigaos/6.5.0b/ -Dmc68020 -D__mc68020__ -D__mc68020 -isystem /opt/amiga/include -D NDEBUG -D M68020 -D USE_64_BIT_INTS -D IEEE_FLOATING_POINT_SUPPORT fenv_feclearexcept.c -quiet -dumpbase fenv_feclearexcept.c -m68020-60 -msoft-float -auxbase-strip large_data_020/libm_objs/fenv_feclearexcept.o -O -Wall -Wextra -Wpointer-arith -Wsign-compare -Wmissing-prototypes -Wundef -Wbad-function-cast -Wmissing-declarations -Wunused -version -fomit-frame-pointer -finline-functions -fno-builtin -fno-common -o /tmp/ccRzMXYW.s
GNU C11 (GCC) version 6.5.0b 230920120617 (m68k-amigaos)
        compiled by GNU C version 8.3.0, GMP version 6.1.2, MPFR version 4.0.2, MPC version 1.1.0, isl version none
GGC heuristics: --param ggc-min-expand=100 --param ggc-min-heapsize=131072
ignoring nonexistent directory "/opt/amiga/libexec/gcc/m68k-amigaos/lib/gcc/m68k-amigaos/6.5.0b/include"
ignoring nonexistent directory "/opt/amiga/libexec/gcc/m68k-amigaos/m68k-amigaos/ndk-include"
ignoring nonexistent directory "/opt/amiga/libexec/gcc/m68k-amigaos/m68k-amigaos/sys-include"
ignoring nonexistent directory "/opt/amiga/libexec/gcc/m68k-amigaos/m68k-amigaos/include"
ignoring nonexistent directory "netinclude"
#include "..." search starts here:
#include <...> search starts here:
 include
 .
 /opt/amiga/include
 /opt/amiga/lib/gcc/m68k-amigaos/6.5.0b/include
 /opt/amiga/m68k-amigaos/ndk-include
 /opt/amiga/m68k-amigaos/sys-include
 /opt/amiga/m68k-amigaos/include
End of search list.
GNU C11 (GCC) version 6.5.0b 230920120617 (m68k-amigaos)
        compiled by GNU C version 8.3.0, GMP version 6.1.2, MPFR version 4.0.2, MPC version 1.1.0, isl version none
GGC heuristics: --param ggc-min-expand=100 --param ggc-min-heapsize=131072
Compiler executable checksum: 868b4f8c50bc6ab2380344e3ca361ee1
In file included from /opt/amiga/m68k-amigaos/sys-include/errno.h:9:0,
                 from include/errno.h:56,
                 from math_headers.h:40,
                 from fenv_feclearexcept.c:35:
/opt/amiga/m68k-amigaos/sys-include/sys/errno.h:20:17: error: expected '=', ',', ';', 'asm' or '__attribute__' before 'const'
 extern __IMPORT const char * const _sys_errlist[];
                 ^~~~~
/opt/amiga/m68k-amigaos/sys-include/sys/errno.h:21:17: error: expected '=', ',', ';', 'asm' or '__attribute__' before 'int'
 extern __IMPORT int _sys_nerr;
                 ^~~
fenv_feclearexcept.c: In function 'feclearexcept':
fenv_feclearexcept.c:46:19: warning: unused parameter 'excepts' [-Wunused-parameter]
 feclearexcept(int excepts)
                   ^~~~~~~
make[2]: *** [GNUmakefile.68k:71: large_data_020/libm_objs/fenv_feclearexcept.o] Error 1
make clib2...failed
use less "log/make clib2.log" to view the full log and search for ***

[arti]

After make clean, and setting NDK to 3.9:

configure libdebug...failed
configure: WARNING: If you wanted to set the --build type, don't use --host.
    If a cross compiler is detected then cross compile mode will be used.
checking build system type... x86_64-unknown-linux-gnu
checking host system type... m68k-unknown-amigaos
checking target system type... m68k-unknown-amigaos
checking whether make sets $(MAKE)... yes
checking for SFDC... no
checking for sfdc... sfdc
checking for m68k-amigaos-gcc... m68k-amigaos-gcc
checking for m68k-amigaos-ar... m68k-amigaos-ar
checking for m68k-amigaos-ranlib... m68k-amigaos-ranlib
checking for m68k-amigaos-gcc... (cached) m68k-amigaos-gcc
checking for C compiler default output file name... configure: error: C compiler cannot create executables
See `config.log' for more details.
configure libdebug...failed

clib2 compiled ok.

[arti]

with --enable-threads=posix

switch -pthread still doesn't work

m68k-amigaos-g++ -std=c++11 -m68040 -O2 -noixemul -pthread mutex.cpp -o mutex
m68k-amigaos-g++: error: unrecognized command line option '-pthread'; did you mean '-pthread'?

-lpthread is treated as wrongly written -pthread and not a library

m68k-amigaos-g++: error: unrecognized command line option '-lpthread'; did you mean '-pthread'?

[bebbo]

Originally Posted by arti

with --enable-threads=posix

switch -pthread still doesn't work

m68k-amigaos-g++ -std=c++11 -m68040 -O2 -noixemul -pthread mutex.cpp -o mutex
m68k-amigaos-g++: error: unrecognized command line option '-pthread'; did you mean '-pthread'?

-lpthread is treated as wrongly written -pthread and not a library

m68k-amigaos-g++: error: unrecognized command line option '-lpthread'; did you mean '-pthread'?

E.g using pthread1.c from https://www.cs.cmu.edu/afs/cs/academ.../pthreads.html

m68k-amigaos-g++ pthread1.c -noixemul -lpthread -o pthread1 -Os

yields an executable, which runs fine and prints

Thread 1
Thread 2
Thread 1 returns: 0
Thread 2 returns: 0

[alancfrancis]

UPDATE: Never mind, answered my own question and got past this problem, but my plan isn't going to work anyway I think :-). I have been trying to wrap libCurl (which I only have in a gcc-friendly link lib) up in a very simple .library I can use from SAS with, essentially, two functions to make a get or post request and dump the results in a tempfile. I think there's stdio stuff in libCurl that's unhappy in a library.

I am trying to build a shared library with amiga-gcc and so far, so good, based on copying the example from https://github.com/bebbo/amigaos-cro...mple-library.c and the associated makefile.

I'd like to make use of functions in a link library.

* I have the header with prototypes included fine, and so the C file compiles.
* I feel pretty sure my -l flags are set up to find the libX.a as if I misspell the library name I get an error, and it goes away if I spell it correctly.

But when I build, the linker reports "undefined reference to 'my_func'"

Is there anything special I should do to be able to build a .library from some C files and some libX.a files ? In short, aside from the -lz, how would I alter the makefile here https://github.com/bebbo/amigaos-cro...mples/Makefile to add, say -lz and call linked zlib functions from inside the simple.library ?

[thyslo]

I fail to compile a Reaction snippet from the NDK3.2 examples directory. See the attached file Layout1.c.

The macros from reaction_macros.h (also attached and renamed to .c for upload validity) are heavily used in all these examples and this is where the compilation fails.

$ m68k-amigaos-gcc Layout1.c

    Layout1.c: In function 'main':
    Layout1.c:307:0: error: unterminated argument list invoking macro "NewObject"
     }
    
    Layout1.c:66:10: warning: assignment from incompatible pointer type [-Wincompatible-pointer-types]
      gParent = VGroupObject,
              ^
    Layout1.c:66:2: error: expected ';' at end of input
      gParent = VGroupObject,
      ^~~~~~~
    Layout1.c:66:2: error: expected declaration or statement at end of input

$

Gcc seems not to detect the macros like VGroupObject etc.

With SAS-C it compiles sucessfully with the command that is given in first line of Layout.c:

sc LINK Layout1.c LIB lib:reaction.lib NOSTACKCHECK

Can anyone help to get it compiled with gcc as well?

[thyslo]

Bebbo answered me on GitHub. The Reaction problem, see above, can be solved like this:

1. Update your amiga-gcc, and at least rebuild libnix:

make update
make clean-libnix
make libnix

2. You have to define NO_INLINE_STDARG.

m68k-amigaos-gcc Layout1.c -o Layout1 -noixemul -Os  -DNO_INLINE_STDARG

[thyslo]

And for the Reaction examples from the NDK where reaction.lib is needed, like Chooser1.c, do the following:

Copy

/opt/amiga/m68k-amigaos/vbcc/lib/reaction.lib


To

opt/amiga/lib/libreaction.a

(note the renaming).

And then compile it like this:

m68k-amigaos-gcc Chooser1.c -o Chooser1 -noixemul -Os -DNO_INLINE_STDARG -lreaction

[Mafi]

Originally Posted by thyslo

And for the Reaction examples from the NDK where reaction.lib is needed, like Chooser1.c, do the following:

Copy

/opt/amiga/m68k-amigaos/vbcc/lib/reaction.lib


To

opt/amiga/lib/libreaction.a

(note the renaming).

And then compile it like this:

m68k-amigaos-gcc Chooser1.c -o Chooser1 -noixemul -Os -DNO_INLINE_STDARG -lreaction

You shouldn't even have to do that. I built the tool chain and managed to compile/run a Reaction app without any special options. Here's my CMakeLists.txt:

 cmake_minimum_required(VERSION 3.10)  # Minimum version of CMake 

 set(CMAKE_EXPORT_COMPILE_COMMANDS ON)                                                        
 set(CMAKE_C_STANDARD 90)                                                                       
 set(CMAKE_C_STANDARD_REQUIRED ON)                                                              
 set(CMAKE_C_EXTENSIONS OFF)                    
                                                
 project(HelloAmiga)                                                    

 add_compile_options(-DNO_INLINE_STDARG)                                                        
 add_compile_options(-Wno-int-conversion)                                                       
 add_compile_options(-Wno-implicit-function-declaration)
                                        
 find_library(DEBUG_LIB NAMES debug PATHS /opt/amiga/m68k-amigaos/lib)                          

 add_executable(hello_amiga test.c)  # Create an executable from test.c
 # Link the executable to the debug library                                                    

 if(DEBUG_LIB)
     target_link_libraries(hello_amiga PRIVATE ${DEBUG_LIB})                                    
 else()
     message(SEND_ERROR "libdebug.a not found")                                                 
 endif()

My biggest problem is that Clang (pretty much used by all language servers like clangd and ccls) chokes on a lot of the NDK includes (mainly protos and any declarations using 68k registers. Basically means auto-complete etc. doesn't work, or partially works.

On second thoughts, I used a pre-canned toolchain config for Cmake, so it probably does some command line/option magic!

(Cmake Amiga toolchain configs here: https://github.com/AmigaPorts/AmigaCMakeCrossToolchains)

-M