[Gm2] Cygwin and pth error

[Christoph Schlegel]

Hi Gaius,

compiling the ncurses example (make post-install) I get a linker error. 
I am (quite) sure the libraries are installed correctly:

/gm2/lib/gcc/i686-pc-cygwin/4.1.2/gm2/pim-coroutine/libgm2pco.a(SYSTEM.o): 
In function `SYSTEM_TRANSFER':
/home/Christoph/build/gcc/../../gcc-4.1.2+gm2-cvs-latest/gcc/gm2/gm2-libs-coroutines/SYSTEM.mod:71: 
undefined reference to `_pth_uctx_switch'
/gm2/lib/gcc/i686-pc-cygwin/4.1.2/gm2/pim-coroutine/libgm2pco.a(SYSTEM.o): 
In function `SYSTEM_NEWPROCESS':
/home/Christoph/build/gcc/../../gcc-4.1.2+gm2-cvs-latest/gcc/gm2/gm2-libs-coroutines/SYSTEM.mod:95: 
undefined reference to `_pth_uctx_create'
/home/Christoph/build/gcc/../../gcc-4.1.2+gm2-cvs-latest/gcc/gm2/gm2-libs-coroutines/SYSTEM.mod:99: 
undefined reference to `_pth_uctx_make'
/gm2/lib/gcc/i686-pc-cygwin/4.1.2/gm2/pim-coroutine/libgm2pco.a(SYSTEM.o): 
In function `localInit':
/home/Christoph/build/gcc/../../gcc-4.1.2+gm2-cvs-latest/gcc/gm2/gm2-libs-coroutines/SYSTEM.mod:243: 
undefined reference to `_pth_init'
/home/Christoph/build/gcc/../../gcc-4.1.2+gm2-cvs-latest/gcc/gm2/gm2-libs-coroutines/SYSTEM.mod:249: 
undefined reference to `_pth_uctx_create'
/home/Christoph/build/gcc/../../gcc-4.1.2+gm2-cvs-latest/gcc/gm2/gm2-libs-coroutines/SYSTEM.mod:254: 
undefined reference to `_pth_uctx_make'
/gm2/lib/gcc/i686-pc-cygwin/4.1.2/gm2/pim-coroutine/libgm2pco.a(SYSTEM.o): 
In function `localMain':
/home/Christoph/build/gcc/../../gcc-4.1.2+gm2-cvs-latest/gcc/gm2/gm2-libs-coroutines/SYSTEM.mod:271: 
undefined reference to `_pth_uctx_create'
/gm2/lib/gcc/i686-pc-cygwin/4.1.2/gm2/pim/libgm2.a(RTint.o): In function 
`RTint_Listen':
/home/Christoph/build/gcc/../../gcc-4.1.2+gm2-cvs-latest/gcc/gm2/gm2-libs/RTint.mod:615: 
undefined reference to `_pth_select'
/home/Christoph/build/gcc/../../gcc-4.1.2+gm2-cvs-latest/gcc/gm2/gm2-libs/RTint.mod:619: 
undefined reference to `_pth_select'
/home/Christoph/build/gcc/../../gcc-4.1.2+gm2-cvs-latest/gcc/gm2/gm2-libs/RTint.mod:624: 
undefined reference to `_pth_select'
/home/Christoph/build/gcc/../../gcc-4.1.2+gm2-cvs-latest/gcc/gm2/gm2-libs/RTint.mod:629: 
undefined reference to `_pth_select'
collect2: ld gab 1 als Ende-Status zurueck
make: *** [post-install] Fehler 1

As a sidenote: If you keep the 'size' command in a Makefile used in the 
Cygwin environment (called e.g. from the Makefile of the hello world 
example of gm2) you need to introduce an additional check, as the 
executables are named different (.exe) under a Windows platform.

UNAME := $(shell uname)
WINEXE := a.exe
LINEXE := a.out

ifeq ($(UNAME), Linux)
 size $(LINEXE)
endif
ifeq ($(UNAME), CYGWIN_NT-6.0)
 size $(WINEXE)
endif

Regards

Christoph