# cgame building
# builds the cgame for vanilla Q3 and TA

# there are slight differences between Q3 and TA build:
#   -DMISSIONPACK
#   TA has cg_newdraw.c and ../ui/ui_shared.c
# the config is passed in the imported variable TARGET_DIR

# qvm building against native:
# only native has cg_syscalls.c
# only qvm has ../game/bg_lib.c
# qvm uses a custom cg_syscalls.asm with equ stubs

Import qw( BASE_CFLAGS TARGET_DIR INSTALL_DIR NO_VM NO_SO CC CXX LINK );

$env = new cons(
  # the code has the very bad habit of doing things like #include "../ui/ui_shared.h"
  # this seems to confuse the dependency analysis, explicit toplevel includes seem to fix
  CPPPATH => '#cgame:#game:#q3_ui',
  CC => $CC,
  CXX => $CXX,
  LINK => $LINK,
	ENV => { PATH => $ENV{PATH}, HOME => $ENV{HOME} },
  CFLAGS => $BASE_CFLAGS . '-fPIC',
  LDFLAGS => '-shared -ldl -lm'
);

# for TA, use -DMISSIONPACK
%ta_env_hash = $env->copy(
  CPPPATH => '#cgame:#game:#ui'
  );
$ta_env_hash{CFLAGS} = '-DMISSIONPACK ' . $ta_env_hash{CFLAGS};
$ta_env = new cons(%ta_env_hash);

# qvm building
# we heavily customize the cons environment
$vm_env = new cons(
  # the code has the very bad habit of doing things like #include "../ui/ui_shared.h"
  # this seems to confuse the dependency analysis, explicit toplevel includes seem to fix
  CPPPATH => '#cgame:#game:#q3_ui',
  CC => 'q3lcc',
  CCCOM => '%CC %CFLAGS %_IFLAGS -c %< -o %>',
  SUFOBJ => '.asm',
  LINK => 'q3asm',
  CFLAGS => '-DQ3_VM -DCGAME -S -Wf-target=bytecode -Wf-g',
  # need to know where to find the compiler tools
  ENV => { PATH => $ENV{PATH} . ":./qvmtools", },
);

# TA qvm building
%vm_ta_env_hash = $vm_env->copy(
  CPPPATH => '#cgame:#game:#ui'
  );
$vm_ta_env_hash{CFLAGS} = '-DMISSIONPACK ' . $vm_ta_env_hash{CFLAGS};
$vm_ta_env = new cons(%vm_ta_env_hash);

# the file with vmMain function MUST be the first one of the list
@FILES = qw(
  cg_main.c
  ../game/bg_misc.c
  ../game/bg_pmove.c
  ../game/bg_slidemove.c
  ../game/q_math.c
  ../game/q_shared.c
  cg_consolecmds.c  
  cg_draw.c
  cg_drawtools.c
  cg_effects.c
  cg_ents.c
  cg_event.c
  cg_info.c
  cg_localents.c
  cg_marks.c
  cg_players.c
  cg_playerstate.c
  cg_predict.c
  cg_scoreboard.c
  cg_servercmds.c
  cg_snapshot.c
  cg_view.c
  cg_weapons.c
  );
$FILESREF = \@FILES;

# only in .so
# (VM uses a custom .asm with equ stubs)
@SO_FILES = qw(
  cg_syscalls.c
  );
$SO_FILESREF = \@SO_FILES;
  
# only for VM
@VM_FILES = qw(
  ../game/bg_lib.c
  cg_syscalls.asm
  );
$VM_FILESREF = \@VM_FILES;  

# common additionals for TA
@TA_FILES = qw(
  cg_newdraw.c
  ../ui/ui_shared.c
  );
$TA_FILESREF = \@TA_FILES;

# FIXME CPU string  
if ($TARGET_DIR eq 'Q3')
{
	if ($NO_SO eq 0)
	{
		Program $env 'cgamei386.so', @$FILESREF, @$SO_FILESREF;
		Install $env $INSTALL_DIR, 'cgamei386.so';
	}
	if ($NO_VM eq 0)
	{
    Depends $vm_env 'cgame.qvm', '#qvmtools/q3lcc';
    Depends $vm_env 'cgame.qvm', '#qvmtools/q3asm';
		Program $vm_env 'cgame.qvm', @$FILESREF, @$VM_FILESREF;
		Install $vm_env $INSTALL_DIR . '/vm', 'cgame.qvm';
	}
}
else
{
	if ($NO_SO eq 0)
	{
		Program $ta_env 'cgamei386.so',
			@$FILESREF, @$SO_FILESREF, @$TA_FILESREF;
		Install $ta_env $INSTALL_DIR, 'cgamei386.so';
	}
	if ($NO_VM eq 0)
	{
    Depends $vm_env 'cgame.qvm', '#qvmtools/q3lcc';
    Depends $vm_env 'cgame.qvm', '#qvmtools/q3asm';
		Program $vm_ta_env 'cgame.qvm', 
			@$FILESREF, @$VM_FILESREF, @$TA_FILESREF;
		Install $vm_ta_env $INSTALL_DIR . '/vm', 'cgame.qvm';
	}	
}