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Basic command line flags: e.g. -opt=0

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Ginger Bill
2017-06-24 22:58:50 +01:00
parent 18f885efab
commit 1d81b73df9
8 changed files with 314 additions and 90 deletions
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src/build_settings.cpp
+36 -10
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@@ -12,10 +12,12 @@ struct BuildContext {
i64 word_size; // Size of a pointer, must be >= 4
i64 max_align; // max alignment, must be >= 1 (and typically >= word_size)
String opt_flags;
String llc_flags;
String link_flags;
bool is_dll;
bool generate_docs;
i32 optimization_level;
};
@@ -23,6 +25,8 @@ gb_global BuildContext build_context = {0};
// TODO(bill): OS dependent versions for the BuildContext
// join_path
// is_dir
@@ -272,22 +276,23 @@ void init_build_context(void) {
#if defined(GB_SYSTEM_WINDOWS)
bc->ODIN_OS = str_lit("windows");
#if defined(GB_ARCH_64_BIT)
bc->ODIN_ARCH = str_lit("amd64");
#else
bc->ODIN_ARCH = str_lit("x86");
#endif
bc->ODIN_ENDIAN = str_lit("little");
#elif defined(GB_SYSTEM_OSX)
bc->ODIN_OS = str_lit("osx");
bc->ODIN_ARCH = str_lit("amd64");
bc->ODIN_ENDIAN = str_lit("little");
#else
bc->ODIN_OS = str_lit("linux");
bc->ODIN_ARCH = str_lit("amd64");
bc->ODIN_ENDIAN = str_lit("little");
#endif
#if defined(GB_ARCH_64_BIT)
bc->ODIN_ARCH = str_lit("amd64");
#else
bc->ODIN_ARCH = str_lit("x86");
#endif
{
u16 x = 1;
bool big = !(*cast(u8 *)&x);
bc->ODIN_ENDIAN = big ? str_lit("big") : str_lit("little");
}
// NOTE(zangent): The linker flags to set the build architecture are different
@@ -317,9 +322,11 @@ void init_build_context(void) {
#define LINK_FLAG_X86 "-arch x86"
#endif
if (bc->ODIN_ARCH == "amd64") {
bc->word_size = 8;
bc->max_align = 16;
bc->llc_flags = str_lit("-march=x86-64 ");
bc->link_flags = str_lit(LINK_FLAG_X64 " ");
} else if (bc->ODIN_ARCH == "x86") {
@@ -327,8 +334,27 @@ void init_build_context(void) {
bc->max_align = 8;
bc->llc_flags = str_lit("-march=x86 ");
bc->link_flags = str_lit(LINK_FLAG_X86 " ");
} else {
gb_printf_err("This current architecture is not supported");
gb_exit(1);
}
isize opt_max = 1023;
char *opt_flags_string = gb_alloc_array(heap_allocator(), char, opt_max+1);
isize opt_len = 0;
bc->optimization_level = gb_clamp(bc->optimization_level, 0, 3);
if (bc->optimization_level != 0) {
opt_len = gb_snprintf(opt_flags_string, opt_max, "-O%d", bc->optimization_level);
} else {
opt_len = gb_snprintf(opt_flags_string, opt_max, "");
}
if (opt_len > 0) {
opt_len--;
}
bc->opt_flags = make_string(cast(u8 *)opt_flags_string, opt_len);
#undef LINK_FLAG_X64
#undef LINK_FLAG_X86
}