Compiling Cygwin on Linux
Robert Eckhoff
rpe2101@gmail.com
Tue Apr 8 16:50:00 GMT 2008
Below are the errors I received before I made their associated changes.
Dave Korn wrote:
> Robert Eckhoff wrote on 05 April 2008 22:39:
>
>
>> directories. Winsup also had some source problems that I corrected.
>>
>> ~/cygwin-1.5.25-11/winsup/cygwin/winsup.h:276
>> -extern bool wsock_started;
>> +extern "C" bool wsock_started;
>>
>>
Before I made the change, Error:
/home/rpeckhoff/cygwin-1.5.25-11/winsup/cygwin/winsup.h:276: error:
previous declaration of 'bool wsock_started' with 'C++' linkage
/home/rpeckhoff/cygwin-1.5.25-11/winsup/cygwin/autoload.cc:246: error:
conflicts with new declaration with 'C' linkage
>> ~/cygwin-1.5.25-11/winsup/cygwin/winsup.h:156
>> -extern int __api_fatal_exit_val;
>> +extern "C" int __api_fatal_exit_val;
>>
>>
>> ~/cygwin-1.5.25-11/winsup/cygwin/environ.h:46
>> -extern char **__cygwin_environ, ***main_environ;
>> +extern "C" char **__cygwin_environ, ***main_environ;
>>
>
>
i686-pc-cygwin-c++ -L/home/rpeckhoff/cygwin/i686-pc-cygwin/winsup
-L/home/rpeckhoff/cygwin/i686-pc-cygwin/winsup/cygwin
-L/home/rpeckhoff/cygwin/i686-pc-cygwin/winsup/w32api/lib -isystem
/home/rpeckhoff/cygwin-1.5.25-11/winsup/include -isystem
/home/rpeckhoff/cygwin-1.5.25-11/winsup/cygwin/include -isystem
/home/rpeckhoff/cygwin-1.5.25-11/winsup/w32api/include
-B/home/rpeckhoff/cygwin/i686-pc-cygwin/newlib/ -isystem
/home/rpeckhoff/cygwin/i686-pc-cygwin/newlib/targ-include -isystem
/home/rpeckhoff/cygwin-1.5.25-11/newlib/libc/include -c -nostdinc++
-DHAVE_CONFIG_H -O2 -g -O2 -MMD -fmerge-constants -ftracer -Wall
-Wstrict-aliasing -Wwrite-strings -fno-common -pipe -fbuiltin
-fmessage-length=0 -I.
-I/home/rpeckhoff/cygwin-1.5.25-11/winsup/cygwin
-I/home/rpeckhoff/cygwin-1.5.25-11/winsup/w32api/include
-I/home/rpeckhoff/cygwin-1.5.25-11/winsup/cygwin/config/i386
-I/home/rpeckhoff/sysroot/usr/lib/gcc/i686-pc-cygwin/4.3.0/include
-fno-rtti -fno-exceptions -o ./dcrt0.o
/home/rpeckhoff/cygwin-1.5.25-11/winsup/cygwin/dcrt0.cc
/home/rpeckhoff/cygwin-1.5.25-11/winsup/cygwin/environ.h:46: error:
previous declaration of 'char** __cygwin_environ' with 'C++' linkage
/home/rpeckhoff/cygwin-1.5.25-11/winsup/cygwin/dcrt0.cc:94: error:
conflicts with new declaration with 'C' linkage
/home/rpeckhoff/cygwin-1.5.25-11/winsup/cygwin/environ.h:46: error:
previous declaration of 'char*** main_environ' with 'C++' linkage
/home/rpeckhoff/cygwin-1.5.25-11/winsup/cygwin/dcrt0.cc:95: error:
conflicts with new declaration with 'C' linkage
/home/rpeckhoff/cygwin-1.5.25-11/winsup/cygwin/winsup.h:156: error:
previous declaration of 'int __api_fatal_exit_val' with 'C++' linkage
/home/rpeckhoff/cygwin-1.5.25-11/winsup/cygwin/dcrt0.cc:125: error:
conflicts with new declaration with 'C' linkage
>> ~/cygwin-1.5.25-11/winsup/cygwin/syscall.cc:3238
>> Uses goto's which breaks the build with gcc4.3. I rewrote the function
>> to use if statements.
>>
>
> What kind of problem does gcc4.3 have with gotos? There's nothing wrong
> with them in general and lots of other functions in that file have them, so
> maybe there's some underlying problem which is the actual thing that needs
> fixing?
>
> cheers,
> DaveK
>
The actual error is this:
i686-pc-cygwin-c++ -L/home/rpeckhoff/cygwin/i686-pc-cygwin/winsup
-L/home/rpeckhoff/cygwin/i686-pc-cygwin/winsup/cygwin
-L/home/rpeckhoff/cygwin/i686-pc-cygwin/winsup/w32api/lib -isystem
/home/rpeckhoff/cygwin-1.5.25-11/winsup/include -isystem
/home/rpeckhoff/cygwin-1.5.25-11/winsup/cygwin/include -isystem
/home/rpeckhoff/cygwin-1.5.25-11/winsup/w32api/include
-B/home/rpeckhoff/cygwin/i686-pc-cygwin/newlib/ -isystem
/home/rpeckhoff/cygwin/i686-pc-cygwin/newlib/targ-include -isystem
/home/rpeckhoff/cygwin-1.5.25-11/newlib/libc/include -c -nostdinc++
-DHAVE_CONFIG_H -O2 -g -O2 -MMD -fomit-frame-pointer -fmerge-constants
-ftracer -Wall -Wstrict-aliasing -Wwrite-strings -fno-common -pipe
-fbuiltin -fmessage-length=0 -I.
-I/home/rpeckhoff/cygwin-1.5.25-11/winsup/cygwin
-I/home/rpeckhoff/cygwin-1.5.25-11/winsup/w32api/include
-I/home/rpeckhoff/cygwin-1.5.25-11/winsup/cygwin/config/i386
-I/home/rpeckhoff/sysroot/usr/lib/gcc/i686-pc-cygwin/4.3.0/include
-fno-rtti -fno-exceptions -o ./syscalls.o
/home/rpeckhoff/cygwin-1.5.25-11/winsup/cygwin/syscalls.cc
/home/rpeckhoff/cygwin-1.5.25-11/winsup/cygwin/syscalls.cc: In function
'FILE* popen(const char*, const char*)':
/home/rpeckhoff/cygwin-1.5.25-11/winsup/cygwin/syscalls.cc:3238: error:
jump to label 'err'
/home/rpeckhoff/cygwin-1.5.25-11/winsup/cygwin/syscalls.cc:3230:
error: from here
/home/rpeckhoff/cygwin-1.5.25-11/winsup/cygwin/syscalls.cc:3233:
error: crosses initialization of 'fhandler_pipe* fh'
/home/rpeckhoff/cygwin-1.5.25-11/winsup/cygwin/syscalls.cc:3238: error:
jump to label 'err'
/home/rpeckhoff/cygwin-1.5.25-11/winsup/cygwin/syscalls.cc:3210:
error: from here
/home/rpeckhoff/cygwin-1.5.25-11/winsup/cygwin/syscalls.cc:3233:
error: crosses initialization of 'fhandler_pipe* fh'
make[3]: *** [syscalls.o] Error 1
Thanks you for your help.
~Robert
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