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Compatibility hacks for old compilers

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GCC versions below 4.8.1 didn't have __builtin_bswap16, so provide
a suitable replacement.
This commit is contained in:
James Larrowe 2020-06-22 20:14:32 +00:00
parent e88a48e0a1
commit 87d25c0896
2 changed files with 5 additions and 1 deletions
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4
Core/gb.h
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@ -52,6 +52,10 @@
#error Unable to detect endianess
#endif
#if __GNUC__ < 4 || (__GNUC__ == 4 && __GNUC_MINOR__ < 8)
#define __builtin_bswap16(x) ({ typeof(x) _x = (x); _x >> 8 | _x << 8; })
#endif
typedef struct {
struct {
uint8_t r, g, b;

2
Makefile
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@ -392,7 +392,7 @@ $(OBJ)/BootROMs/SameBoyLogo.pb12: $(OBJ)/BootROMs/SameBoyLogo.2bpp $(PB12_COMPRE
$(realpath $(PB12_COMPRESS)) < $< > $@
$(PB12_COMPRESS): BootROMs/pb12.c
$(NATIVE_CC) -Wall -Werror $< -o $@
$(NATIVE_CC) -std=c99 -Wall -Werror $< -o $@
$(BIN)/BootROMs/agb_boot.bin: BootROMs/cgb_boot.asm
$(BIN)/BootROMs/cgb_boot_fast.bin: BootROMs/cgb_boot.asm