error: cast from ‘Thread*’ to ‘int’ loses precision [-fpermissive]

[qubodup]

System

Arch Linux 64bit
gcc (GCC) 4.7.0 20120505 (prerelease)

Git commit

0a98355

Error

$ make -j1 Make for Linux and derivates c++ -Wp,-M,-MP,-MT,build/source/de/hackcraft/lang/Thread.o,-MF,dep/build-source-de-hackcraft-lang-Thread.o.d -std=gnu++0x -Wall -I source -O1 -funroll-loops -c source/de/hackcraft/lang/Thread.cpp -o build/source/de/hackcraft/lang/Thread.o source/de/hackcraft/lang/Thread.cpp: In member function ‘virtual int Thread::hashCode()’: source/de/hackcraft/lang/Thread.cpp:41:17: error: cast from ‘Thread*’ to ‘int’ loses precision [-fpermissive] make: *** [build/source/de/hackcraft/lang/Thread.o] Error 1

[hackcraft-de]

The precision loss in cast is intended as it is only a hash value (that isn't even used yet).
I've changed the line of code.

Please test and report back if the compiler is satisfied with this solution or not.

[qubodup]

I get an error:

$ make -j1 Make for Linux and derivates mkdir -p dist c++ -o dist/linwarrior build/source/de/hackcraft/main.o build/source/de/hackcraft/io/Filesystem.o build/source/de/hackcraft/io/Texfile.o build/source/de/hackcraft/world/Subsystem.o build/source/de/hackcraft/world/Message.o build/source/de/hackcraft/world/Component.o build/source/de/hackcraft/world/Timing.o build/source/de/hackcraft/world/World.o build/source/de/hackcraft/world/Entity.o build/source/de/hackcraft/world/Propmap.o build/source/de/hackcraft/game/GameMain.o build/source/de/hackcraft/game/OpenMission.o build/source/de/hackcraft/game/Game.o build/source/de/hackcraft/lang/Thread.o build/source/de/hackcraft/proc/Ambient.o build/source/de/hackcraft/proc/Solid.o build/source/de/hackcraft/proc/Road.o build/source/de/hackcraft/proc/Facade.o build/source/de/hackcraft/proc/Surface.o build/source/de/hackcraft/proc/Landscape.o build/source/de/hackcraft/world/object/cMech.o build/source/de/hackcraft/world/sub/cityscape/rBuilding.o build/source/de/hackcraft/world/sub/cityscape/CityscapeSystem.o build/source/de/hackcraft/world/sub/cityscape/rTile.o build/source/de/hackcraft/world/sub/cityscape/rPadmap.o build/source/de/hackcraft/world/sub/weapon/rWepcom.o build/source/de/hackcraft/world/sub/weapon/rWeaponExplosion.o build/source/de/hackcraft/world/sub/weapon/rWeaponPlasmagun.o build/source/de/hackcraft/world/sub/weapon/rWeaponSparkgun.o build/source/de/hackcraft/world/sub/weapon/rWeaponHoming.o build/source/de/hackcraft/world/sub/weapon/rWeapon.o build/source/de/hackcraft/world/sub/weapon/rTarget.o build/source/de/hackcraft/world/sub/weapon/WeaponSystem.o build/source/de/hackcraft/world/sub/weapon/rTarcom.o build/source/de/hackcraft/world/sub/weapon/rWeaponRaybeam.o build/source/de/hackcraft/world/sub/weapon/rWeaponMachinegun.o build/source/de/hackcraft/world/sub/model/ModelSystem.o build/source/de/hackcraft/world/sub/model/rBillboard.o build/source/de/hackcraft/world/sub/model/rRigged.o build/source/de/hackcraft/world/sub/model/rScatter.o build/source/de/hackcraft/world/sub/model/rTree.o build/source/de/hackcraft/world/sub/mission/MissionSystem.o build/source/de/hackcraft/world/sub/computer/rNavcom.o build/source/de/hackcraft/world/sub/computer/rComcom.o build/source/de/hackcraft/world/sub/computer/rController.o build/source/de/hackcraft/world/sub/landscape/rPlanetmap.o build/source/de/hackcraft/world/sub/landscape/LandscapeSystem.o build/source/de/hackcraft/world/sub/trigger/TriggerSystem.o build/source/de/hackcraft/world/sub/trigger/rAlert.o build/source/de/hackcraft/world/sub/trigger/rTrigger.o build/source/de/hackcraft/world/sub/mobile/rForcom.o build/source/de/hackcraft/world/sub/mobile/rMobile.o build/source/de/hackcraft/world/sub/mobile/rCamera.o build/source/de/hackcraft/world/sub/physics/PhysicsSystem.o build/source/de/hackcraft/world/sub/physics/rCollider.o build/source/de/hackcraft/world/sub/physics/rTraceable.o build/source/de/hackcraft/world/sub/background/BackgroundSystem.o -lGLEW -lGLU -lSDL -lopenal -lalut /usr/bin/ld: build/source/de/hackcraft/world/object/cMech.o: undefined reference to symbol 'glColor4fv' /usr/bin/ld: note: 'glColor4fv' is defined in DSO /usr/lib/libGL.so.1 so try adding it to the linker command line /usr/lib/libGL.so.1: could not read symbols: Invalid operation collect2: error: ld returned 1 exit status make: *** [dist/linwarrior] Error 1

But adding -lGL to the end of line 54 of the Makefile solves it. I believe this is a behavior/requirement of newer (testing?) versions of GCC, which also sometimes requires adding -lm in other software.

In any case, both GCC and I say thanks!

[hackcraft-de]

Ok, I double checked with http://glew.sourceforge.net/install.html and they say GL should be added just like on windows.
I'll commit/push and close this issue (don't hesitate to reopen or open a new issue).
Thanks.