PortabilityHacks¶

DON'T USE C99 FEATURE!!!

DON'T USE GCC FEATURE!!!

types¶

:long
don't forget LLP64
:void *
LP32/LP64/LLP64
:long long
use LONG_LONG or int64_t
:codepoint
unsigned int

inttypes¶

• int8_t
• uint8_t
• int16_t
• uint16_t
• int32_t
• uint32_t
• int64_t
• uint64_t
• intptr_t
• uintptr_t
• VALUE
• SIGNED_VALUE
  http://seclan.dll.jp/c99d/c99d09.htm#dt19990621

printf formats¶

• PRId32
• PRIdPTR
• PRIdPTRDIFF
• PRIdSIZE
• PRIdVALUE
  http://seclan.dll.jp/c99d/c99d09.htm#dt19990705

number conversion¶

NUM2INT have some intended strange behavior around overflows.

make¶

There are gmake, nmake, bsdmake, and so on.

special¶

You can use C99 feature and gcc feature when you treat other compilers.