Instructions for DCFreeDev compiler setup

[q_006]

This is for setting up your Dev-C++ or DCFreeDev compiler settings so you can get your DC Dev going as quickly as possible.

in Dev-C++ go to Project, then Project Options you'll see this screen:


now just staying in the same menu you'll just go from tab to tab, following the screen shots below:




here, the complete code for the compiler is:

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-Wall -g -ml -m4-single-only -O2 -fno-builtin -fno-strict-aliasing -fomit-frame-pointer -fno-optimize-sibling-calls
-D_arch_dreamcast

and for the linker is:

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-ml -m4-single-only -nostartfiles -nostdlib -Wl,-Ttext=0x8c010000
startup.o
-lkallisti -lgcc

here you just have to make sure the output file has the extension ".elf"


add, browse, and choose "dreamcast.mak". the contents of the file will look like this:

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romdisk.img:
	genromfs -f romdisk.img -d romdisk -v

romdisk.o: romdisk.img
	bin2o romdisk.img romdisk romdisk.o
	copy c:\dev-cpp\sh-elf\templates\startup.o
	md romdisk

all-before: romdisk.o
	
all-after : 

	sh-elf-objcopy -O binary $(BIN) temp.bin
	c:\dev-cpp\chankast\emu.bat temp.bin

unless you are using a coder's cable. then the file looks like this:

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all-after : 
	dc-tool -t COM1 -b 115200 -x $(BIN)

from here just go to Execute, Clean, then Compile and you should be good to go.

to make Chankast work you'll have to get the necessary files.
believe me it should take you 5 minutes tops to Google for them.

[q_006]

if anyone has any questions, comments, corrections, or suggestions, please feel free to PM or post.
I'll get to it as soon as possible.

[dospro]

Hi. after having the worst times trying all the way of configuring this dev thing, i still cant make it work.

So far i have got this.

Having already configured as the post says.
I have the following errors:
sh-elf-gcc.exe C:\Dev-Cpp\proyectos\dc\t2\sh-elf-gcc.exe
startup.o: No such file or directory.
C:\Dev-Cpp\proyectos\dc\t2\Makefile.win
[Build Error] [Project2.elf] Error 1

which i cant fix.
What can i do now?

[elefas]

@dospro: you have to copy startup.o to your project directory. Do a search in c:\dev-cpp\ to find startup.o and copy it to your directory.

I used DCFreeDev for porting a supervision emulator. the outputed elf works fine but the bin (both scrambled and unscrambled) do not work, only freeze or restart DC. Tried both sh-elf-objcopy and elf2bin to produce the bin from the elf, the commands show no errors but DC cannot run them!!!! Please help!!! I released the emulator because I had tested only the elf which worked but I get many complains that the bins don't work!!!!

[Quzar]

sh-elf-objcopy -O binary -R .stack blah.elf blah.bin

that might fix your problem.

[elefas]

thanks quzar but I have already tried that and it doesn't work

Problem now solved!

[q_006]

well how did you solve it?

[Masen]

yes plz post it , cause i have exactly the same problem !!!!!!!

So pleaze !!!! [/b]

[Masen]

^^

[elefas]

Just use this makefile:

dreamcast.mak

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LIBS2 = $(patsubst startup.o, ,$(LIBS))
BIN2 = $(patsubst %.elf,%.el2,$(BIN))
RBIN = $(patsubst %.elf,%.bin,$(BIN))
FBIN = 1st_read.bin

## Classic Dreamcast.MAL
clean-RD :
	rm -f romdisk.img romdisk.o

romdisk.img : clean-RD
	genromfs -f romdisk.img -d romdisk -v

romdisk.o : romdisk.img
	bin2o romdisk.img romdisk romdisk.o

all-before : romdisk.o
## END Classic Dreamcast.MAL

$(BIN2) : $(BIN)
	$(CC) startup.o $(LINKOBJ) -o $(BIN2) $(LIBS2)

Strip : $(BIN2)
	sh-elf-strip $(BIN2)

$(RBIN) : Strip
	sh-elf-objcopy -O binary $(BIN2) $(RBIN)

all-after : $(RBIN)
	scramble $(RBIN) $(FBIN) 

the trick is in the line: $(CC) startup.o $(LINKOBJ) -o $(BIN2) $(LIBS2)

hope it helps.
(all credits go to scherzo)

[Strapping Scherzo]

Wha?! What did I do? Is that from an old post of mine when I was using Dev-C++?

[elefas]

Well I can't really remember where I found it, but it was surelly you who solved this problem!!! And thanks to you I was able to publish superDCision

[JMD]

Look like my Makefile (You probably found it here) but there is no copyright on it

Scherzo found the linking order tricks : credits go to him

[elefas]

Ok Ok, so credits go to all of us!!!!!

[chronofurb]

I installed dcfreedev version 1.1, and ran the updater to update it to 1.2, should I have to set anyting else before I start coding, I tried one of the examples, but it gives the error kos.h is not found. I even included kos.h in my environment variables that windows keeps. Anyone have ideas what I am doing wrong here...

[pnpbios]

Awsome tutorial. I follow it step by step using The version 1.2 devkit, and i keep getting the following error.

cc1plus.exe: invalid option `l'
cc1plus.exe: invalid option `4-single-only'

any ideas? If i take them out, it spews out the missing kos functions.

[pnpbios]

ah, nevermind.