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Some GCC flags improvements (#1903)

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* Some GCC flags improvements

* Move -fno-reorder-blocks -fno-zero-initialized-in-bss to assets only

* Add -fno-PIC since some gcc versions use -fPIC as default

* Enable builtin functions on gcc, with appropriate changes to missing_gcc_functions.c
  and ultra64/libc.h

* Move -fno-merge-constants -mno-explicit-relocs -mno-split-addresses to overlays only
  as they are only needed there for reloc reasons

* Remove unneeded casts in missing_gcc_functions.c

* Change gcc assets flags handling
This commit is contained in:
Tharo 2024-02-29 20:11:54 +00:00 • committed by GitHub
parent 1b60dcf6dd
commit 3670a48aee
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3 changed files with 40 additions and 10 deletions
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7
Makefile
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@ -154,7 +154,7 @@ endif
ASFLAGS := -march=vr4300 -32 -no-pad-sections -Iinclude
ifeq ($(COMPILER),gcc)
CFLAGS += -G 0 -nostdinc $(INC) -march=vr4300 -mfix4300 -mabi=32 -mno-abicalls -mdivide-breaks -fno-zero-initialized-in-bss -fno-toplevel-reorder -ffreestanding -fno-common -fno-merge-constants -mno-explicit-relocs -mno-split-addresses $(CHECK_WARNINGS) -funsigned-char
CFLAGS += -G 0 -nostdinc $(INC) -march=vr4300 -mfix4300 -mabi=32 -mno-abicalls -mdivide-breaks -fno-PIC -fno-common -ffreestanding -fbuiltin -fno-builtin-sinf -fno-builtin-cosf $(CHECK_WARNINGS) -funsigned-char
MIPS_VERSION := -mips3
else
# Suppress warnings for wrong number of macro arguments (to fake variadic
@ -314,8 +314,11 @@ $(BUILD_DIR)/src/overlays/%.o: CC := $(PYTHON) tools/asm_processor/build.py $(CC
$(BUILD_DIR)/assets/%.o: CC := $(PYTHON) tools/asm_processor/build.py $(CC) -- $(AS) $(ASFLAGS) --
else
# Note that if adding additional assets directories for modding reasons these flags must also be used there
$(BUILD_DIR)/assets/%.o: CFLAGS += -fno-zero-initialized-in-bss -fno-toplevel-reorder
$(BUILD_DIR)/src/%.o: CFLAGS += -fexec-charset=euc-jp
$(BUILD_DIR)/src/libultra/libc/ll.o: OPTFLAGS := -Ofast
$(BUILD_DIR)/src/%.o: CC := $(CC) -fexec-charset=euc-jp
$(BUILD_DIR)/src/overlays/%.o: CFLAGS += -fno-merge-constants -mno-explicit-relocs -mno-split-addresses
endif
#### Main Targets ###