How to create clib2 versions of newlib libraries

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SinanSam460

Posted on: 2022/9/20 20:48 #1

Not too shy to talk

Hi all

I am trying to compile freealut for clib2 (newlib version is available on OS4Depot.net)

Is the following CMake command excerpt the right way ? If not how should I do it ?


cmake -DCMAKE_CXX_FLAGS="-mcrt=clib2" -DAMIGAOS4=1 -DRUN_IN_PLACE=TRUE -DCMAKE_SYSTEM_NAME=GENERIC -DCMAKE_SYSTEM_VERSION=1 -DCMAKE_BUILD_TYPE=Release -DCMAKE_C_COMPILER="/usr/local/amiga/bin/ppc-amigaos-gcc" -DCMAKE_CXX_COMPILER="/usr/local/amiga/bin/ppc-amigaos-g++" -DCMAKE_LINKER="/usr/local/amiga/bin/ppc-amigaos-ld" -DCMAKE_AR="/usr/local/amiga/bin/ppc-amigaos-ar" -DCMAKE_RANLIB="/usr/local/amiga/bin/ppc-amigaos-ranlib" -DCMAKE_FIND_ROOT_PATH="/usr/local/amiga/ppc-amigaos/"

Edited by SinanSam460 on 2022/9/21 17:54:47

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kas1e

Re: How to create clib2 versions of newlib bibraries

Posted on: 2022/9/20 20:56 #2

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@Sinan
Cmake files can be a bit vary , i.e. in one project CFLAGS_CXX/etc can be taken fine (in most), in some - not. That depends of how CMakeFile's for were done.

Usually, when cmake files in app/game done correctly, it will be something like this:


cd game_dir

mkdir build

cd build



cmake \

-DCMAKE_SYSTEM_NAME=Generic \

-DCMAKE_SYSTEM_VERSION=1 \

-DCMAKE_BUILD_TYPE=Release \

-DCMAKE_C_FLAGS="-mcrt=clib2" \

-DCMAKE_CXX_FLAGS="-mcrt=clib2" \

-DCMAKE_C_COMPILER="/usr/local/amiga/bin/ppc-amigaos-gcc" \

-DCMAKE_CXX_COMPILER="/usr/local/amiga/bin/ppc-amigaos-g++" \

-DCMAKE_LINKER="/usr/local/amiga/bin/ppc-amigaos-ld" \

-DCMAKE_AR="/usr/local/amiga/bin/ppc-amigaos-ar" \

-DCMAKE_RANLIB="/usr/local/amiga/bin/ppc-amigaos-ranlib" \

-DCMAKE_FIND_ROOT_PATH="/usr/local/amiga/ppc-amigaos/" \

..

Things like "-DAMIGAOS4=1" is in use only if in CMakelist.txt you do have "AMIGAOS" thing in which, when this -DAMIGAOS4=1 is set, you do what you need (like add/remove some flags, options, etc which you can from CMake options on running). But "AMIGAOS4" is of course just anything you choose, you can do "-DOMEGA1200=1" , and in main CMakeList.txt add that define.

I for myself didn't use "RUN_IN_PLACE" , so not sure if it default CMake option or not, but when things ported, it anyway always "in place" :)

Most problem is DCMAKE_C_FLAGS and DCMAKE_CXX_FLAGS which not always taken into account, so you may need manually fix CMakeFile to add -mcrt=clib2 where need it, or, alternatively when you build makefiles via cmake, then inside of "flags.txt" and "link.txt" change all you need manually

Edited by kas1e on 2022/9/21 6:16:43
Edited by kas1e on 2022/9/21 6:17:49

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SinanSam460

Re: How to create clib2 versions of newlib libraries

Posted on: 2022/9/21 17:53 #3

Not too shy to talk

@kas1e

Ok I can build libalut.a with Cmake command, but I guess it is not the real clib2 version..Because when I compile the project with freealut, I get a __getreent error like this..

From one of past threads, I learned this happen when you mix newlib and clib2 libraries


/usr/local/amiga/ppc-amigaos/SDK/local/clib2/lib/libalut.a(alutError.o): In function `_alutSetError':

/home/salass00/Development/Projects/libs/freealut/src/alutError.c:12: undefined reference to `__getreent'

collect2: error: ld returned 1 exit status

make: *** [makefile.os4:319: vanillatd] Error 1

So I tried to create my makefile like this


TARGET         = libalut.a

CXX        = ppc-amigaos-gcc



CXXFLAGS     = -mcrt=clib2 -athread=native -DHAVE_STDINT_H -DHAVE_STAT -DHAVE_NANOSLEEP -DHAVE_TIME_H 

CXXFLAGS    += -I/usr/local/amiga/ppc-amigaos/SDK/Local/clib2/include/AL/  -I/usr/local/amiga/ppc-amigaos/SDK/Local/clib2/include/ -I./include 

CXXLIBS        =-L/usr/local/amiga/ppc-amigaos/SDK/Local/clib2/lib/  -lopenal -L/usr/local/amiga/ppc-amigaos/SDK/Local/clib2/lib/libopenal.a -lm -lc -lpthread



libalut_la_SOURCES =        \

    alutBufferData.c    \

    alutCodec.c        \

    alutError.c        \

    alutInit.c        \

    alutInputStream.c    \

    alutInternal.h        \

    alutLoader.c        \

    alutOutputStream.c    \

    alutUtil.c        \

    alutVersion.c        \

    alutWaveform.c



OBJS1 = $(libalut_la_SOURCES) 



all: $(TARGET)



$(TARGET): $(OBJS1)

    $(CXX) $(CXXFLAGS) -o $@ $^ $(CXXLIBS)

and final error is like this:


/usr/local/amiga/ppc-amigaos/SDK/clib2/lib/libc.a(main.o): In function `call_main':

main.c:(.text+0x3c): undefined reference to `main'

collect2: error: ld returned 1 exit status

make: *** [Makefile.os4:26: libalut.a] Error 1

I guess I am missing something here..

I guess someday we have to make a Wiki for Clib2 :)

Sinan - AmigaOS4 Beta-Tester
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kas1e

Re: How to create clib2 versions of newlib libraries

Posted on: 2022/9/21 18:22 #4

Home away from home

@Sinan
So maybe those CMAKE_CXX_FLAGS and CMAKE_C_FLAGS didn't taken into account by main CMakeFile.txt.

What i usually do to be sure that all correct , is calling cmake command, it generate all the stuff, then, simple go to your "build" directory you created, and do search there for filename "flags.make". IT usually will be in the build/CMAkeFiles/name_of_your_app.dir/

There you can check what C_FLAGS and CXX_FLAGS have, and so add -mcrt=clib2 there if there none after you call your cmake command.

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SinanSam460

Re: How to create clib2 versions of newlib libraries

Posted on: 2022/9/21 18:37 #5

Not too shy to talk

@kas1e

-mcrt=clib2 is there, so CMake works.


# CMAKE generated file: DO NOT EDIT!

# Generated by "Unix Makefiles" Generator, CMake Version 3.23



# compile C with /usr/local/amiga/bin/ppc-amigaos-gcc

C_DEFINES = 



C_INCLUDES = -I/amiga/develop/freealut/include -I/usr/local/amiga/ppc-amigaos/SDK/Local/clib2/include/AL -I/amiga/develop/freealut/build



C_FLAGS = -mcrt=clib2 -finline-functions -ffast-math -fomit-frame-pointer -O3 -DNDEBUG



# Custom flags: CMakeFiles/test_fileloader.dir/test_suite/test_fileloader.c.obj_FLAGS = -Wno-deprecated-declarations

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trgswe

Re: How to create clib2 versions of newlib libraries

Posted on: 2022/9/21 18:42 #6

Just popping in

@SinanSam460

That you get the error with main seems to indicate a problem with linking, either missing some link libraries or a error in the parameters to ld.

SinanSam460

Re: How to create clib2 versions of newlib libraries

Posted on: 2022/9/21 19:15 #7

Not too shy to talk

@trgswe

I found another fork of freealut. It seems to work.

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