Xpdf and linking problems

[Riccardo Mottola]

Hi,

I fixed several details in the PDFKit/xpdf build system (currently 
available in GAP and used for example by GWorkspace by its inspector).

It contained several hacks which made it compile on linux+gcc, but not 
well on other systems or compilers.
I fixed some places which forced the "C" compiler to be g++ (I suppose 
for linking purposes) which prevented building with clang and cleaned up 
some of the cflags and ldflags.

I still can build fine and use it on linux/x86 and on freebsd8/gcc. With 
freeBSD9 it builds (but displays white pages). On NetBSD and OpenBSD 
however it builds, but it fails to be used by the gworkspace configure 
script. I think that either some option is not working or that 
gnustep-make has problems when linking objective-c and C++ file?
I suppose that when OBJC, CC files are mixed, our make system will do 
the right thing...

The symbols appear to be C++ symbols, or not?

Ideas/suggestions/patches welcome.

Riccardo


From NetBSD:

configure:3536: checking for PDFKit
configure:3552: gcc -o conftest -xobjective-c -MMD -MP -DGNUSTEP 
-DGNUSTEP_BASE_LIBRARY=1 -DGNU_GUI_LIBRARY=1 -DGNU_RUNTIME=1 
-DGNUSTEP_BASE_LIBRARY=1 -fno-strict-aliasing -fexceptions 
-fobjc-exceptions -D_NATIVE_OBJC_EXCEPTIONS -pthread -fPIC -Wall 
-DGSWARN -DGSDIAGNOSE -Wno-import -g -O2 -fgnu-runtime 
-fconstant-string-class=NSConstantString 
-I/Local/Library/Headers/ObjectiveC2 -fexec-charset=UTF-8 
-I/usr/pkg/include -I. -I/usr/pkg/include 
-I/home/multix/GNUstep/Library/Headers -I/Local/Library/Headers 
-I/System/Library/Headers   -rdynamic -Wl,-R/usr/pkg/lib -L/usr/pkg/lib 
-Wl,-R/usr/X11R6/lib -L/usr/X11R6/lib -pthread -shared-libgcc 
-fexceptions -fgnu-runtime -L/home/multix/GNUstep/Library/Libraries 
-L/Local/Library/Libraries -L/System/Library/Libraries 
-Wl,-R/usr/pkg/lib -L/usr/pkg/lib -lgnustep-gui -lgnustep-base -lpthread 
-lobjc -lm conftest.c  -lPDFKit >&5
/Local/Library/Libraries/libPDFKit.so: warning: warning: tmpnam() 
possibly used unsafely, use mkstemp() or mkdtemp()
/Local/Library/Libraries/libPDFKit.so: undefined reference to `operator 
new[](unsigned int)'
/Local/Library/Libraries/libPDFKit.so: undefined reference to `operator 
delete[](void*)'
/Local/Library/Libraries/libPDFKit.so: undefined reference to `operator 
delete(void*)'
/Local/Library/Libraries/libPDFKit.so: undefined reference to 
`__cxa_pure_virtual'
/Local/Library/Libraries/libPDFKit.so: undefined reference to 
`__gxx_personality_v0'
/Local/Library/Libraries/libPDFKit.so: undefined reference to `vtable 
for __cxxabiv1::__class_type_info'
/Local/Library/Libraries/libPDFKit.so: undefined reference to `operator 
new(unsigned int)'
/Local/Library/Libraries/libPDFKit.so: undefined reference to `vtable 
for __cxxabiv1::__si_class_type_info'
c