make error

[bintao-tao]

When I execute the make operation, the error is reported as follows：
in file included from charm/core/math/pairing/pairingmodule.c:30:
charm/core/math/pairing/pairingmodule.h:39:10: fatal error: longintrepr.h: no such file or directory.
39 | #include <longintrepr.h>
| ^~~~~~~~~~~~~~~
compilation terminated.
error: command '/usr/bin/x86_64-linux-gnu-gcc' failed with exit code 1

[terry-fee]

Are you using Python 3.12? In Python 3.12, the header file longintrepr.h is in the directory /usr/include/python3.12/cpython/ whereas for the earlier Python versions, the same file is in /usr/include/python3.XX/. I would suggest using Python versions 3.8 to 3.10 instead for the time being. There are other things in Python 3.12 that will break the Charm library, so it is probably better to wait until someone resolves those issues before using Charm on Python 3.12.

[luoky69]

Are you using Python 3.12? In Python 3.12, the header file longintrepr.h is in the directory /usr/include/python3.12/cpython/ whereas for the earlier Python versions, the same file is in /usr/include/python3.XX/. I would suggest using Python versions 3.8 to 3.10 instead for the time being. There are other things in Python 3.12 that will break the Charm library, so it is probably better to wait until someone resolves those issues before using Charm on Python 3.12.

There is no longintrepr.h in directory cpython when I use python 3.8 or 3.10 in Conda, and when I add longintrepr.h manually, make error "no member named 'long_value'" will show up, how can I fix this?

[terry-fee]

@luoky69 To resolve issues like this, you would need to make the C program look for different folders and maybe also use different methods depending on the installed Python version, such as the following.

#if PY_MINOR_VERSION <= 10
  #include <longintrepr.h>
#else
  #include <cpython/longintrepr.h>                             
#endif

#if PY_MINOR_VERSION <= 11
  #define MY_MACRO(l) l->ob_digit
#else
  #define MY_MACRO(l)  l->long_value.ob_digit
#endif

If you look inside the header file longintrepr.h, Python 3.11 and below has the following definition.

struct _longobject {
    PyObject_VAR_HEAD
    digit ob_digit[1];
};

But Python 3.12 has an additional field long_value.

typedef struct _PyLongValue {
    uintptr_t lv_tag; /* Number of digits, sign and flags */
    digit ob_digit[1];
} _PyLongValue;

struct _longobject {
    PyObject_HEAD
    _PyLongValue long_value;
};

Anyway, this issue has been fixed.