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Project init with hello world.

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Jurn Wubben 2025-07-13 12:13:57 +02:00
commit 828c98ba34
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1
.envrc Normal file
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use flake

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.gitignore vendored Normal file
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out/
build/
.direnv/

230
Makefile Normal file
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#---------------------------------------------------------------------------------
.SUFFIXES:
#---------------------------------------------------------------------------------
ifeq ($(strip $(DEVKITARM)),)
$(error "Please set DEVKITARM in your environment. export DEVKITARM=<path to>devkitARM")
endif
TOPDIR ?= $(CURDIR)
include $(DEVKITARM)/3ds_rules
#---------------------------------------------------------------------------------
# TARGET is the name of the output
# BUILD is the directory where object files & intermediate files will be placed
# SOURCES is a list of directories containing source code
# DATA is a list of directories containing data files
# INCLUDES is a list of directories containing header files
# GRAPHICS is a list of directories containing graphics files
# GFXBUILD is the directory where converted graphics files will be placed
# If set to $(BUILD), it will statically link in the converted
# files as if they were data files.
#
# NO_SMDH: if set to anything, no SMDH file is generated.
# ROMFS is the directory which contains the RomFS, relative to the Makefile (Optional)
# APP_TITLE is the name of the app stored in the SMDH file (Optional)
# APP_DESCRIPTION is the description of the app stored in the SMDH file (Optional)
# APP_AUTHOR is the author of the app stored in the SMDH file (Optional)
# ICON is the filename of the icon (.png), relative to the project folder.
# If not set, it attempts to use one of the following (in this order):
# - <Project name>.png
# - icon.png
# - <libctru folder>/default_icon.png
#---------------------------------------------------------------------------------
TARGET := $(notdir $(CURDIR))
BUILD := build
SOURCES := src
DATA := data
INCLUDES := include
GRAPHICS := gfx
GFXBUILD := $(BUILD)
#ROMFS := romfs
#GFXBUILD := $(ROMFS)/gfx
#---------------------------------------------------------------------------------
# options for code generation
#---------------------------------------------------------------------------------
ARCH := -march=armv6k -mtune=mpcore -mfloat-abi=hard -mtp=soft
CFLAGS := -g -Wall -O2 -mword-relocations \
-ffunction-sections \
$(ARCH)
CFLAGS += $(INCLUDE) -D__3DS__
CXXFLAGS := $(CFLAGS) -fno-rtti -fno-exceptions -std=gnu++14
ASFLAGS := -g $(ARCH)
LDFLAGS = -specs=3dsx.specs -g $(ARCH) -Wl,-Map,$(notdir $*.map)
LIBS := -lbox2d -lcitro2d -lcitro3d -lctru -lm
#---------------------------------------------------------------------------------
# list of directories containing libraries, this must be the top level containing
# include and lib
#---------------------------------------------------------------------------------
LIBDIRS := $(CTRULIB) $(PORTLIBS)
#---------------------------------------------------------------------------------
# no real need to edit anything past this point unless you need to add additional
# rules for different file extensions
#---------------------------------------------------------------------------------
ifneq ($(BUILD),$(notdir $(CURDIR)))
#---------------------------------------------------------------------------------
export OUTPUT := $(CURDIR)/out/$(TARGET)
export TOPDIR := $(CURDIR)
export VPATH := $(foreach dir,$(SOURCES),$(CURDIR)/$(dir)) \
$(foreach dir,$(GRAPHICS),$(CURDIR)/$(dir)) \
$(foreach dir,$(DATA),$(CURDIR)/$(dir))
export DEPSDIR := $(CURDIR)/$(BUILD)
CFILES := $(foreach dir,$(SOURCES),$(notdir $(wildcard $(dir)/*.c)))
CPPFILES := $(foreach dir,$(SOURCES),$(notdir $(wildcard $(dir)/*.cpp)))
SFILES := $(foreach dir,$(SOURCES),$(notdir $(wildcard $(dir)/*.s)))
PICAFILES := $(foreach dir,$(SOURCES),$(notdir $(wildcard $(dir)/*.v.pica)))
SHLISTFILES := $(foreach dir,$(SOURCES),$(notdir $(wildcard $(dir)/*.shlist)))
GFXFILES := $(foreach dir,$(GRAPHICS),$(notdir $(wildcard $(dir)/*.t3s)))
BINFILES := $(foreach dir,$(DATA),$(notdir $(wildcard $(dir)/*.*)))
#---------------------------------------------------------------------------------
# use CXX for linking C++ projects, CC for standard C
#---------------------------------------------------------------------------------
ifeq ($(strip $(CPPFILES)),)
#---------------------------------------------------------------------------------
export LD := $(CC)
#---------------------------------------------------------------------------------
else
#---------------------------------------------------------------------------------
export LD := $(CXX)
#---------------------------------------------------------------------------------
endif
#---------------------------------------------------------------------------------
#---------------------------------------------------------------------------------
ifeq ($(GFXBUILD),$(BUILD))
#---------------------------------------------------------------------------------
export T3XFILES := $(GFXFILES:.t3s=.t3x)
#---------------------------------------------------------------------------------
else
#---------------------------------------------------------------------------------
export ROMFS_T3XFILES := $(patsubst %.t3s, $(GFXBUILD)/%.t3x, $(GFXFILES))
export T3XHFILES := $(patsubst %.t3s, $(BUILD)/%.h, $(GFXFILES))
#---------------------------------------------------------------------------------
endif
#---------------------------------------------------------------------------------
export OFILES_SOURCES := $(CPPFILES:.cpp=.o) $(CFILES:.c=.o) $(SFILES:.s=.o)
export OFILES_BIN := $(addsuffix .o,$(BINFILES)) \
$(PICAFILES:.v.pica=.shbin.o) $(SHLISTFILES:.shlist=.shbin.o) \
$(addsuffix .o,$(T3XFILES))
export OFILES := $(OFILES_BIN) $(OFILES_SOURCES)
export HFILES := $(PICAFILES:.v.pica=_shbin.h) $(SHLISTFILES:.shlist=_shbin.h) \
$(addsuffix .h,$(subst .,_,$(BINFILES))) \
$(GFXFILES:.t3s=.h)
export INCLUDE := $(foreach dir,$(INCLUDES),-I$(CURDIR)/$(dir)) \
$(foreach dir,$(LIBDIRS),-I$(dir)/include) \
-I$(CURDIR)/$(BUILD)
export LIBPATHS := $(foreach dir,$(LIBDIRS),-L$(dir)/lib)
export _3DSXDEPS := $(if $(NO_SMDH),,$(OUTPUT).smdh)
ifeq ($(strip $(ICON)),)
icons := $(wildcard *.png)
ifneq (,$(findstring $(TARGET).png,$(icons)))
export APP_ICON := $(TOPDIR)/$(TARGET).png
else
ifneq (,$(findstring icon.png,$(icons)))
export APP_ICON := $(TOPDIR)/icon.png
endif
endif
else
export APP_ICON := $(TOPDIR)/$(ICON)
endif
ifeq ($(strip $(NO_SMDH)),)
export _3DSXFLAGS += --smdh=$(CURDIR)/out/$(TARGET).smdh
endif
ifneq ($(ROMFS),)
export _3DSXFLAGS += --romfs=$(CURDIR)/$(ROMFS)
endif
.PHONY: all clean
#---------------------------------------------------------------------------------
all: $(BUILD) $(GFXBUILD) $(DEPSDIR) $(ROMFS_T3XFILES) $(T3XHFILES)
@$(MAKE) --no-print-directory -C $(BUILD) -f $(CURDIR)/Makefile
$(BUILD):
@mkdir -p $@
ifneq ($(GFXBUILD),$(BUILD))
$(GFXBUILD):
@mkdir -p $@
endif
ifneq ($(DEPSDIR),$(BUILD))
$(DEPSDIR):
@mkdir -p $@
endif
#---------------------------------------------------------------------------------
clean:
@echo clean ...
@rm -fr $(BUILD) $(TARGET).3dsx $(OUTPUT).smdh $(TARGET).elf $(GFXBUILD)
#---------------------------------------------------------------------------------
$(GFXBUILD)/%.t3x $(BUILD)/%.h : %.t3s
#---------------------------------------------------------------------------------
@echo $(notdir $<)
@tex3ds -i $< -H $(BUILD)/$*.h -d $(DEPSDIR)/$*.d -o $(GFXBUILD)/$*.t3x
#---------------------------------------------------------------------------------
else
#---------------------------------------------------------------------------------
# main targets
#---------------------------------------------------------------------------------
$(OUTPUT).3dsx : $(OUTPUT).elf $(_3DSXDEPS)
$(OFILES_SOURCES) : $(HFILES)
$(OUTPUT).elf : $(OFILES)
#---------------------------------------------------------------------------------
# you need a rule like this for each extension you use as binary data
#---------------------------------------------------------------------------------
%.bin.o %_bin.h : %.bin
#---------------------------------------------------------------------------------
@echo $(notdir $<)
@$(bin2o)
#---------------------------------------------------------------------------------
.PRECIOUS : %.t3x %.shbin
#---------------------------------------------------------------------------------
%.t3x.o %_t3x.h : %.t3x
#---------------------------------------------------------------------------------
$(SILENTMSG) $(notdir $<)
$(bin2o)
#---------------------------------------------------------------------------------
%.shbin.o %_shbin.h : %.shbin
#---------------------------------------------------------------------------------
$(SILENTMSG) $(notdir $<)
$(bin2o)
-include $(DEPSDIR)/*.d
#---------------------------------------------------------------------------------------
endif
#---------------------------------------------------------------------------------------

130
flake.lock generated Normal file
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{
"nodes": {
"devkitNix": {
"inputs": {
"flake-utils": "flake-utils",
"nixpkgs": "nixpkgs"
},
"locked": {
"lastModified": 1752284472,
"narHash": "sha256-6/+VKKBRk1s6LG8SIBP1Te2vOEyAPOAJD8t9E1oFf/w=",
"owner": "bandithedoge",
"repo": "devkitNix",
"rev": "71c8f22a135ff9453f914e6dff2b57524c2cf942",
"type": "github"
},
"original": {
"owner": "bandithedoge",
"repo": "devkitNix",
"type": "github"
}
},
"flake-utils": {
"inputs": {
"systems": "systems"
},
"locked": {
"lastModified": 1731533236,
"narHash": "sha256-l0KFg5HjrsfsO/JpG+r7fRrqm12kzFHyUHqHCVpMMbI=",
"owner": "numtide",
"repo": "flake-utils",
"rev": "11707dc2f618dd54ca8739b309ec4fc024de578b",
"type": "github"
},
"original": {
"owner": "numtide",
"repo": "flake-utils",
"type": "github"
}
},
"flake-utils_2": {
"inputs": {
"systems": "systems_2"
},
"locked": {
"lastModified": 1731533236,
"narHash": "sha256-l0KFg5HjrsfsO/JpG+r7fRrqm12kzFHyUHqHCVpMMbI=",
"owner": "numtide",
"repo": "flake-utils",
"rev": "11707dc2f618dd54ca8739b309ec4fc024de578b",
"type": "github"
},
"original": {
"owner": "numtide",
"repo": "flake-utils",
"type": "github"
}
},
"nixpkgs": {
"locked": {
"lastModified": 1751949589,
"narHash": "sha256-mgFxAPLWw0Kq+C8P3dRrZrOYEQXOtKuYVlo9xvPntt8=",
"owner": "NixOS",
"repo": "nixpkgs",
"rev": "9b008d60392981ad674e04016d25619281550a9d",
"type": "github"
},
"original": {
"owner": "NixOS",
"ref": "nixpkgs-unstable",
"repo": "nixpkgs",
"type": "github"
}
},
"nixpkgs_2": {
"locked": {
"lastModified": 1752012998,
"narHash": "sha256-Q82Ms+FQmgOBkdoSVm+FBpuFoeUAffNerR5yVV7SgT8=",
"owner": "NixOS",
"repo": "nixpkgs",
"rev": "2a2130494ad647f953593c4e84ea4df839fbd68c",
"type": "github"
},
"original": {
"owner": "NixOS",
"ref": "nixpkgs-unstable",
"repo": "nixpkgs",
"type": "github"
}
},
"root": {
"inputs": {
"devkitNix": "devkitNix",
"flake-utils": "flake-utils_2",
"nixpkgs": "nixpkgs_2"
}
},
"systems": {
"locked": {
"lastModified": 1681028828,
"narHash": "sha256-Vy1rq5AaRuLzOxct8nz4T6wlgyUR7zLU309k9mBC768=",
"owner": "nix-systems",
"repo": "default",
"rev": "da67096a3b9bf56a91d16901293e51ba5b49a27e",
"type": "github"
},
"original": {
"owner": "nix-systems",
"repo": "default",
"type": "github"
}
},
"systems_2": {
"locked": {
"lastModified": 1681028828,
"narHash": "sha256-Vy1rq5AaRuLzOxct8nz4T6wlgyUR7zLU309k9mBC768=",
"owner": "nix-systems",
"repo": "default",
"rev": "da67096a3b9bf56a91d16901293e51ba5b49a27e",
"type": "github"
},
"original": {
"owner": "nix-systems",
"repo": "default",
"type": "github"
}
}
},
"root": "root",
"version": 7
}

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flake.nix Normal file
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{
inputs = {
nixpkgs.url = "github:NixOS/nixpkgs/nixpkgs-unstable";
flake-utils.url = "github:numtide/flake-utils";
devkitNix.url = "github:bandithedoge/devkitNix";
};
outputs = {
self,
nixpkgs,
flake-utils,
devkitNix,
...
}:
flake-utils.lib.eachDefaultSystem (
system: let
pkgs = import nixpkgs {
inherit system;
overlays = [devkitNix.overlays.default];
};
in {
devShells.default = pkgs.mkShell.override {stdenv = pkgs.devkitNix.stdenvARM;} {packages = with pkgs; [imagemagick];};
packages.default = pkgs.devkitNix.stdenvARM.mkDerivation {
name = "somding";
src = ./.;
buildInputs = [pkgs.imagemagick pkgs.which];
# makeFlags = ["TARGET=example"];
installPhase = ''
mkdir $out
cp 3ds.3dsx $out
'';
};
}
);
}

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#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <3ds.h>
int main(int argc, char* argv[])
{
gfxInitDefault();
consoleInit(GFX_TOP, NULL);
printf("Hello, world!\n");
// Main loop
while (aptMainLoop())
{
gspWaitForVBlank();
gfxSwapBuffers();
hidScanInput();
// Your code goes here
u32 kDown = hidKeysDown();
if (kDown & KEY_START)
break; // break in order to return to hbmenu
}
gfxExit();
return 0;
}