Hi,

(venv) bash-5.2$ oslevel -s
7200-04-01-1939

I am using python 3.11.3 to create a venv, then pip install cffi and pip install pyinstaller.

The issue is when trying to install cffi I get an error for undefined symbol __lwsync, this is if I export CC=gcc

If export CC= IBM xlclang I dont get any error.

Similarly, for pyinstaller xlclang no error but for gcc I get an error saying to build bootloader and set --target 64 bit or 32 bit.

When using gcc I set cflags to have -maix64 OBJECT_MODE=64 and AR=ar -X64

The endgoal is to build a binary using pyinstaller

Is it safe to use IBM compiler as python has been built using gcc 10.3, and some other packages we use gets built fine using gcc

Is ABI from gcc and IBM compiler interoperable?

Hi,

(venv) bash-5.2$ oslevel -s
7200-04-01-1939

I am using python 3.11.3 to create a venv, then pip install cffi and pip install pyinstaller.

The issue is when trying to install cffi I get an error for undefined symbol __lwsync, this is if I export CC=gcc

If export CC= IBM xlclang I dont get any error.

Similarly, for pyinstaller xlclang no error but for gcc I get an error saying to build bootloader and set --target 64 bit or 32 bit.

When using gcc I set cflags to have -maix64 OBJECT_MODE=64 and AR=ar -X64

The endgoal is to build a binary using pyinstaller

Is it safe to use IBM compiler as python has been built using gcc 10.3, and some other packages we use gets built fine using gcc

Is ABI from gcc and IBM compiler interoperable?

Hi Avinesh,

It seems like you are using aixbase provided python. Can you please try with toolbox python(/opt/freeware/bin/python3)
We have a CFFI built with toolbox python. You can install using the below command.

dnf install python3-cffi

Regards,
Shubham

Hi,

(venv) bash-5.2$ oslevel -s
7200-04-01-1939

I am using python 3.11.3 to create a venv, then pip install cffi and pip install pyinstaller.

The issue is when trying to install cffi I get an error for undefined symbol __lwsync, this is if I export CC=gcc

If export CC= IBM xlclang I dont get any error.

Similarly, for pyinstaller xlclang no error but for gcc I get an error saying to build bootloader and set --target 64 bit or 32 bit.

When using gcc I set cflags to have -maix64 OBJECT_MODE=64 and AR=ar -X64

The endgoal is to build a binary using pyinstaller

Is it safe to use IBM compiler as python has been built using gcc 10.3, and some other packages we use gets built fine using gcc

Is ABI from gcc and IBM compiler interoperable?

Hi Shubham

I want to use it with python3.11.3 only, python3-cffi installs is for python 3.9, I need cffi on my venv only.

Hi Avinesh,

It seems like you are using aixbase provided python. Can you please try with toolbox python(/opt/freeware/bin/python3)
We have a CFFI built with toolbox python. You can install using the below command.

dnf install python3-cffi

Regards,
Shubham

Hi,

(venv) bash-5.2$ oslevel -s
7200-04-01-1939

I am using python 3.11.3 to create a venv, then pip install cffi and pip install pyinstaller.

The issue is when trying to install cffi I get an error for undefined symbol __lwsync, this is if I export CC=gcc

If export CC= IBM xlclang I dont get any error.

Similarly, for pyinstaller xlclang no error but for gcc I get an error saying to build bootloader and set --target 64 bit or 32 bit.

When using gcc I set cflags to have -maix64 OBJECT_MODE=64 and AR=ar -X64

The endgoal is to build a binary using pyinstaller

Is it safe to use IBM compiler as python has been built using gcc 10.3, and some other packages we use gets built fine using gcc

Is ABI from gcc and IBM compiler interoperable?

Hi Shubham

I want to use it with python3.11.3 only, python3-cffi installs is for python 3.9, I need cffi on my venv only.

Hi Avinesh,

It seems like you are using aixbase provided python. Can you please try with toolbox python(/opt/freeware/bin/python3)
We have a CFFI built with toolbox python. You can install using the below command.

dnf install python3-cffi

Regards,
Shubham

Hi,

(venv) bash-5.2$ oslevel -s
7200-04-01-1939

I am using python 3.11.3 to create a venv, then pip install cffi and pip install pyinstaller.

The issue is when trying to install cffi I get an error for undefined symbol __lwsync, this is if I export CC=gcc

If export CC= IBM xlclang I dont get any error.

Similarly, for pyinstaller xlclang no error but for gcc I get an error saying to build bootloader and set --target 64 bit or 32 bit.

When using gcc I set cflags to have -maix64 OBJECT_MODE=64 and AR=ar -X64

The endgoal is to build a binary using pyinstaller

Is it safe to use IBM compiler as python has been built using gcc 10.3, and some other packages we use gets built fine using gcc

Is ABI from gcc and IBM compiler interoperable?

Hi Avinesh,

Please pass "-maix64" in CC flag while building.
Also please discard the previously shared fix.

Explaination:
By default the object mode is 32bit in AIX. Since in CFLAGS we are passing -maix64, so it is creating 64bit object file. But in linking phase, CFLAGS aren't used and hence giving error initially shown below.

Getting requirements to build wheel ... done
  Running command Preparing metadata (pyproject.toml)
  ld: 0711-736 ERROR: Input file _configtest.o:
        XCOFF64 object files are not allowed in 32-bit mode.
  collect2: error: ld returned 8 exit status
  Note: will not use '__sync_synchronize()' in the C code
  ***** The above error message can be safely ignored.

> Note: will not use '__sync_synchronize()' in the C code
In setup.py, due to this error, pip wasn't able to pick the flag -DHAVE_SYNC_SYNCHRONIZE automatically. Hence passing it manually had worked.

Regards,
Shubham

Hi Shubham

I want to use it with python3.11.3 only, python3-cffi installs is for python 3.9, I need cffi on my venv only.

Hi Avinesh,

It seems like you are using aixbase provided python. Can you please try with toolbox python(/opt/freeware/bin/python3)
We have a CFFI built with toolbox python. You can install using the below command.

dnf install python3-cffi

Regards,
Shubham

Hi,

(venv) bash-5.2$ oslevel -s
7200-04-01-1939

I am using python 3.11.3 to create a venv, then pip install cffi and pip install pyinstaller.

The issue is when trying to install cffi I get an error for undefined symbol __lwsync, this is if I export CC=gcc

If export CC= IBM xlclang I dont get any error.

Similarly, for pyinstaller xlclang no error but for gcc I get an error saying to build bootloader and set --target 64 bit or 32 bit.

When using gcc I set cflags to have -maix64 OBJECT_MODE=64 and AR=ar -X64

The endgoal is to build a binary using pyinstaller

Is it safe to use IBM compiler as python has been built using gcc 10.3, and some other packages we use gets built fine using gcc

Is ABI from gcc and IBM compiler interoperable?

Hi Shubham

On AIX 7.2 gcc 10 it fails, only after using option  -DHAVE_SYNC_SYNCHRONIZE 

Which compiler version on OS did you try on?

I always set OBJECT_MODE=64, AR="ar -X64" CFLAGS="-maix64" before running

Hi Avinesh,

Please pass "-maix64" in CC flag while building.
Also please discard the previously shared fix.

Explaination:
By default the object mode is 32bit in AIX. Since in CFLAGS we are passing -maix64, so it is creating 64bit object file. But in linking phase, CFLAGS aren't used and hence giving error initially shown below.

Getting requirements to build wheel ... done
  Running command Preparing metadata (pyproject.toml)
  ld: 0711-736 ERROR: Input file _configtest.o:
        XCOFF64 object files are not allowed in 32-bit mode.
  collect2: error: ld returned 8 exit status
  Note: will not use '__sync_synchronize()' in the C code
  ***** The above error message can be safely ignored.

> Note: will not use '__sync_synchronize()' in the C code
In setup.py, due to this error, pip wasn't able to pick the flag -DHAVE_SYNC_SYNCHRONIZE automatically. Hence passing it manually had worked.

Regards,
Shubham

Hi Shubham

I want to use it with python3.11.3 only, python3-cffi installs is for python 3.9, I need cffi on my venv only.

Hi Avinesh,

It seems like you are using aixbase provided python. Can you please try with toolbox python(/opt/freeware/bin/python3)
We have a CFFI built with toolbox python. You can install using the below command.

dnf install python3-cffi

Regards,
Shubham

Hi,

(venv) bash-5.2$ oslevel -s
7200-04-01-1939

I am using python 3.11.3 to create a venv, then pip install cffi and pip install pyinstaller.

The issue is when trying to install cffi I get an error for undefined symbol __lwsync, this is if I export CC=gcc

If export CC= IBM xlclang I dont get any error.

Similarly, for pyinstaller xlclang no error but for gcc I get an error saying to build bootloader and set --target 64 bit or 32 bit.

When using gcc I set cflags to have -maix64 OBJECT_MODE=64 and AR=ar -X64

The endgoal is to build a binary using pyinstaller

Is it safe to use IBM compiler as python has been built using gcc 10.3, and some other packages we use gets built fine using gcc

Is ABI from gcc and IBM compiler interoperable?