36 lines
1.2 KiB
Python
36 lines
1.2 KiB
Python
#
|
|
# SCons Largefile enablement
|
|
#
|
|
# Version 1.4
|
|
# 07-Jul-2024
|
|
#
|
|
|
|
def enableLargeFiles(check,conf):
|
|
"""Tries to enable 64-bit off_t on linux platform"""
|
|
fseeko=conf.CheckFunc('fseeko')
|
|
if fseeko:
|
|
conf.env.Append(CPPFLAGS = '-DHAVE_FSEEKO')
|
|
offt=conf.CheckTypeSize('off_t','#include <stdio.h>\n#include <sys/types.h>')
|
|
ulong=conf.CheckTypeSize('unsigned long')
|
|
if fseeko and offt<8 and offt>0:
|
|
# we have off_t but its not 8 byte long
|
|
saved_flags=conf.env.Dictionary()['CPPFLAGS']
|
|
# we try to use some defs to make off_t longer
|
|
conf.env.Append(CPPFLAGS='-D_FILE_OFFSET_BITS=64')
|
|
offt=conf.CheckTypeSize('off_t','#include <stdio.h>\n#include <sys/types.h>')
|
|
if offt < 8:
|
|
env.Replace(CPPFLAGS=saved_flags)
|
|
if not fseeko:
|
|
# no fseeko we do not need off_t for anything
|
|
offt = 0
|
|
check.Message("Effective off_t size is ")
|
|
check.Result(str(offt)+" bytes")
|
|
conf.env.Append(CPPFLAGS = '-DSIZEOF_OFF_T='+str(offt))
|
|
check.Message("Checking if we have native large files ...")
|
|
if fseeko and int(offt)>=8 and int(ulong)>=8:
|
|
conf.env.Append(CPPFLAGS = '-DNATIVE_LARGEFILES')
|
|
rc=True
|
|
else:
|
|
rc=False
|
|
check.Result(rc)
|