/* TinyCC & gcc defines */
#if defined TCC_TARGET_PE && defined TCC_TARGET_X86_64
tcc_define_symbol(s, "__SIZE_TYPE__", "unsigned long long");
tcc_define_symbol(s, "__PTRDIFF_TYPE__", "long long");
tcc_define_symbol(s, "__LLP64__", NULL);
#else
tcc_define_symbol(s, "__SIZE_TYPE__", "unsigned long");
tcc_define_symbol(s, "__PTRDIFF_TYPE__", "long");
tcc_define_symbol(s, "__LP64__", NULL); // <= here?
#endif
Compiling tcc on native 32BITS Windows for example, it defines __LP64__
This variable is specified as (see
https://gcc.gnu.org/onlinedocs/gcc-4.9.2/cpp/Common-Predefined-Macros.html)
__LP64__
_LP64
These macros are defined, with value 1, if (and only if) the compilation is
for a target where long int and pointer both use 64-bits and int uses
32-bit.
Testing this macro in programs compiled with tcc 32bits returns wrong
behavior
#if defined(__LP64__)
#define MYPTR_SIZE_IN_BYTES 8
// Assume void* is a 64bits pointer which is false on Windows 32bit
#endif
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