I have a third party library which I finally have working within my MonoTouch app. However, it will only compile for the simulator when I set the SDK to 4.2. If I set it to 5.0, the linker will fail. It will compile to 5.0 for an actual device. What is the gcc_s.10.5 that its asking for and where should it be located?
Generated /var/folders/GG/GG6dZ9dzFX0vYZmJ1+6pQ++++TI/-Tmp-/tmp6a32a243.tmp/main.m
/Developer/Platforms/iPhoneSimulator.platform/Developer/usr/bin/gcc-4.2 -arch i386 -gdwarf-2 -fobjc-legacy-dispatch -fobjc-abi-version=2 -miphoneos-version-min=5.0 -arch i386 -std=c99 -I/Developer/MonoTouch/SDKs/MonoTouch.iphonesimulator.sdk/usr/include -isysroot /Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator5.0.sdk -c /var/folders/GG/GG6dZ9dzFX0vYZmJ1+6pQ++++TI/-Tmp-/tmp6a32a243.tmp/main.m -o /var/folders/GG/GG6dZ9dzFX0vYZmJ1+6pQ++++TI/-Tmp-/tmp6a32a243.tmp/main.x86.o -DDEBUG
/Developer/Platforms/iPhoneSimulator.platform/Developer/usr/bin/gcc-4.2 -arch i386 -gdwarf-2 -fobjc-legacy-dispatch -fobjc-abi-version=2 -miphoneos-version-min=5.0 -isysroot /Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator5.0.sdk /var/folders/GG/GG6dZ9dzFX0vYZmJ1+6pQ++++TI/-Tmp-/tmp6a32a243.tmp/main.x86.o -o /var/folders/GG/GG6dZ9dzFX0vYZmJ1+6pQ++++TI/-Tmp-/tmp6a32a243.tmp/RetailStuff -framework CFNetwork -framework Foundation -framework UIKit -framework SystemConfiguration -framework CoreFoundation -framework CoreGraphics -framework AudioToolbox -framework AVFoundation -framework ExternalAccessory -framework QuartzCore -lz -u _mono_pmip -u _CreateZStream -u _CloseZStream -u _Flush -u _ReadZStream -u _WriteZStream -liconv -lmono-2.0 -lmonotouch -L/Developer/MonoTouch/SDKs/MonoTouch.iphonesimulator.sdk/usr/lib -u _catch_exception_raise -force_load /var/folders/GG/GG6dZ9dzFX0vYZmJ1+6pQ++++TI/-Tmp-/tmp6a32a243.tmp/libGrabbaDriver.a
Process exited with code 1, command:
/Developer/Platforms/iPhoneSimulator.platform/Developer/usr/bin/gcc-4.2 -arch i386 -gdwarf-2 -fobjc-legacy-dispatch -fobjc-abi-version=2 -miphoneos-version-min=5.0 -isysroot /Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator5.0.sdk /var/folders/GG/GG6dZ9dzFX0vYZmJ1+6pQ++++TI/-Tmp-/tmp6a32a243.tmp/main.x86.o -o /var/folders/GG/GG6dZ9dzFX0vYZmJ1+6pQ++++TI/-Tmp-/tmp6a32a243.tmp/RetailStuff -framework CFNetwork -framework Foundation -framework UIKit -framework SystemConfiguration -framework CoreFoundation -framework CoreGraphics -framework AudioToolbox -framework AVFoundation -framework ExternalAccessory -framework QuartzCore -lz -u _mono_pmip -u _CreateZStream -u _CloseZStream -u _Flush -u _ReadZStream -u _WriteZStream -liconv -lmono-2.0 -lmonotouch -L/Developer/MonoTouch/SDKs/MonoTouch.iphonesimulator.sdk/usr/lib -u _catch_exception_raise -force_load /var/folders/GG/GG6dZ9dzFX0vYZmJ1+6pQ++++TI/-Tmp-/tmp6a32a243.tmp/libGrabbaDriver.a
ld: library not found for -lgcc_s.10.5
collect2: ld returned 1 exit status
mtouch exited with code 1
The answers above were on the right approach. The same problem occurred on a different project as well. In the end I upgraded from Snow Leopard to Lion, upgraded to latest xcode and its all ok now.