$!------------------------------------------------------------------------------

$! make "PNG: The Definitive Guide" demo programs (for X) under OpenVMS

$!

$! Script created by Martin Zinser for libpng; modified by Greg Roelofs

$! for standalone pngbook source distribution.

$!

$!

$!    Set locations where zlib and libpng sources live.

$!

$ zpath   = ""

$ pngpath = ""

$!

$ if f$search("[---.zlib]zlib.h").nes."" then zpath = "[---.zlib]"

$ if f$search("[--]png.h").nes."" then pngpath = "[--]"

$!

$ if f$search("[-.zlib]zlib.h").nes."" then zpath = "[-.zlib]"

$ if f$search("[-.libpng]png.h").nes."" then pngpath = "[-.libpng]"

$!

$ if zpath .eqs. ""

$ then

$   write sys$output "zlib include not found. Exiting..."

$   exit 2

$ endif 

$!

$ if pngpath .eqs. ""

$ then

$   write sys$output "libpng include not found. Exiting..."

$   exit 2

$ endif 

$!

$!    Look for the compiler used.

$!

$ ccopt="/include=(''zpath',''pngpath')"

$ if f$getsyi("HW_MODEL").ge.1024

$ then

$  ccopt = "/prefix=all"+ccopt

$  comp  = "__decc__=1"

$  if f$trnlnm("SYS").eqs."" then define sys sys$library:

$ else

$  if f$search("SYS$SYSTEM:DECC$COMPILER.EXE").eqs.""

$   then

$    if f$trnlnm("SYS").eqs."" then define sys sys$library:

$    if f$search("SYS$SYSTEM:VAXC.EXE").eqs.""

$     then

$      comp  = "__gcc__=1"

$      CC :== GCC

$     else

$      comp = "__vaxc__=1"

$     endif

$   else

$    if f$trnlnm("SYS").eqs."" then define sys decc$library_include:

$    ccopt = "/decc/prefix=all"+ccopt

$    comp  = "__decc__=1"

$  endif

$ endif

$ open/write lopt lib.opt

$ write lopt "''pngpath'libpng.olb/lib"

$ write lopt "''zpath'libz.olb/lib"

$ close lopt

$ open/write xopt x11.opt

$ write xopt "sys$library:decw$xlibshr.exe/share"

$ close xopt

$!

$!    Build 'em.

$!

$ write sys$output "Compiling PNG book programs ..."

$   CALL MAKE readpng.OBJ "cc ''CCOPT' readpng" -

	readpng.c readpng.h

$   CALL MAKE readpng2.OBJ "cc ''CCOPT' readpng2" -

	readpng2.c readpng2.h

$   CALL MAKE writepng.OBJ "cc ''CCOPT' writepng" -

	writepng.c writepng.h

$   write sys$output "Building rpng-x..."

$   CALL MAKE rpng-x.OBJ "cc ''CCOPT' rpng-x" -

	rpng-x.c readpng.h

$   call make rpng-x.exe -

	"LINK rpng-x,readpng,lib.opt/opt,x11.opt/opt" -

	rpng-x.obj readpng.obj

$   write sys$output "Building rpng2-x..."

$   CALL MAKE rpng2-x.OBJ "cc ''CCOPT' rpng2-x" -

	rpng2-x.c readpng2.h

$   call make rpng2-x.exe -

	"LINK rpng2-x,readpng2,lib.opt/opt,x11.opt/opt" -

	rpng2-x.obj readpng2.obj

$   write sys$output "Building wpng..."

$   CALL MAKE wpng.OBJ "cc ''CCOPT' wpng" -

	wpng.c writepng.h

$   call make wpng.exe -

	"LINK wpng,writepng,lib.opt/opt" -

	wpng.obj writepng.obj

$ exit

$!

$!

$MAKE: SUBROUTINE   !SUBROUTINE TO CHECK DEPENDENCIES

$ V = 'F$Verify(0)

$! P1 = What we are trying to make

$! P2 = Command to make it

$! P3 - P8  What it depends on

$

$ If F$Search(P1) .Eqs. "" Then Goto Makeit

$ Time = F$CvTime(F$File(P1,"RDT"))

$arg=3

$Loop:

$       Argument = P'arg

$       If Argument .Eqs. "" Then Goto Exit

$       El=0

$Loop2:

$       File = F$Element(El," ",Argument)

$       If File .Eqs. " " Then Goto Endl

$       AFile = ""

$Loop3:

$       OFile = AFile

$       AFile = F$Search(File)

$       If AFile .Eqs. "" .Or. AFile .Eqs. OFile Then Goto NextEl

$       If F$CvTime(F$File(AFile,"RDT")) .Ges. Time Then Goto Makeit

$       Goto Loop3

$NextEL:

$       El = El + 1

$       Goto Loop2

$EndL:

$ arg=arg+1

$ If arg .Le. 8 Then Goto Loop

$ Goto Exit

$

$Makeit:

$ VV=F$VERIFY(0)

$ write sys$output P2

$ 'P2

$ VV='F$Verify(VV)

$Exit:

$ If V Then Set Verify

$ENDSUBROUTINE