MinGW - Minimalist GNU for Windows

--- Max Bowsher <maxb@...> wrote: > I've run into a problem, compiling
some code with
> gcc-2 -Werror -Wmissing-prototypes.
> There are 3 warnings in mingw-runtime <string.h>:
> /usr/include/mingw/string.h:166: warning: no previous prototype for
> `strcasecmp'
> /usr/include/mingw/string.h:172: warning: no previous prototype for
> `strncasecmp'
> /usr/include/mingw/string.h:184: warning: no previous prototype for
> `wcscmpi'
> 
> One simple fix is to add a prototype immediately before the definitions.
> 
> Details of the change which added the problem follow.
> 
> 
> Max.
> 


As you indicate this is a problem with gcc-2. which, in my view, is obsolete.  
With current gcc (3.x) there are no such warnings emitted for system headers.

If you wish to pursue this,please submit patch, but for consistency the patch
should also include all the other cases of extern __inline__ in the mingw
runtime headers.  There are at least 20 in math.h.  

Danny

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I think you are right, i need to build binutils for arm first. Actually
i change my configuration, both gcc and binutils 
	../gcc/configure --with-gcc --with-gnu-ld --with-gnu-as
--host=mingw32
	--target=arm-thumb-pe --disable-nls --disable-shared
--with-cpu=arm7tdmi
	--enable-languages=c++ --disable-win32-registry
	--enable-multilib --enable-interwork --prefix=/mingwarm
then change lines in Makefile in gcc:
	change	USE_COLLECT2 = collect2$(exeext) to USE_COLLECT2 = 
	change STMP_FIXINC = stmp-fixinc to STMP_FIXINC =
then
	make "CFLAGS=-O2" "LDFLAGS=-s"

main change is that target change to arm-thumb-pe. Building binutils is
not quit smooth, but i believe i install binutils successful, under
d:\msys\1.0\mingwarm\

after that , gcc compiling run much far without big mistakes, but stop
at this point:

checking whether the C compiler (/d/souces/gcc/armobj/gcc/xgcc
-B/d/souces/gcc/armobj/gcc/ -B/mingwarm/arm-thumb-pe/bin/
-B/mingwarm/arm-thumb-pe/lib/ -isystem /mingwarm/arm-thumb-pe/include
-O2 ) works... no
configure: error: installation or configuration problem: C compiler
cannot create executables.

I checked the config.log, in
D:\souces\gcc\armobj\arm-thumb-pe\libiberty\config.log, says that:
configure:2212: /d/souces/gcc/armobj/gcc/xgcc
-B/d/souces/gcc/armobj/gcc/ -B/mingwarm/arm-thumb-pe/bin/
-B/mingwarm/arm-thumb-pe/lib/ -isystem /mingwarm/arm-thumb-pe/include -o
conftest -O2   conftest.c  1>&5
d:\msys\1.0\mingwarm\arm-thumb-pe\bin\ld.exe: cannot open crt0.o: No
such file or directory

that is clear crt0 is not built. but i check my source package, found
nothing about crt0.*. so the PROBLEM is:
as LD.EXE for arm is built from binutils package, crt0.* should not be a
part of gcc package, and LD.EXE need it for linking starting code to
executable, WHAT ELSE SOURCE PACKAGE(S) I need to build that lib? i
already have binutils-2.13-20020903-1-src.tar.gz and gcc sources.

And i think xgcc is a temporary compiling driver like gcc, but invoking
some arm compiler tools make arm code instead, is that right?

Eager for you help,
and thanks for Earnie and any help. 

> -----Original Message-----
> From: mingw-users-admin@...
> [mailto:mingw-users-admin@...] On Behalf Of 
> Earnie Boyd
> Sent: Thursday, February 27, 2003 21:21
> To: longchuan
> Cc: mingw
> Subject: Re: [Mingw-users] compiling gcc
> 
> 
> Have you created a binutils --target=arm-elf?
> 
> Earnie.
> 
> longchuan wrote:
> > hello:
> > 	I wonder how to make gcc form source code. my building
> environment is
> > :
> > 	win 2k;
> > 	MSYS-1.0.8-i686-2002.07.30-1.exe;
> > 	MinGW-2.0.0-3.exe and source code is 
> > 	gcc-3.2-20020817-1.src.tar.gz
> > 
> > 	../gcc/ is where my source codes were unzipped.
> > 	under msys sh:
> > 	../gcc/configure --with-gcc --with-gnu-ld --with-gnu-as
> > --host=mingw32 --target=mingw32 --prefix=/mingw --enable-threads 
> > --disable-nls --enable-languages=c++ --disable-win32-registry 
> > --disable-shared
> > 	then make
> > 	the configuration is copied from what gcc -v display except for 
> > --enable-language option, just trying to see whether it works. The 
> > building progress stops again and again. source error , 
> include error,
> > link error and configuration error.
> > 
> > 	Then I try to build a win32-ARM cross compiler, using
> configuration
> > below:
> > 	../gcc/configure --with-gcc --with-gnu-ld --with-gnu-as
> > -target=arm-elf --disable-nls --disable-shared --enable- 
> > languages="c,c++"
> > 	make -w
[snip]