[Mesa3d-users] Errors in Makefile & associated configuration files for Mesa 6.5 build

[Christopher B. <Chr...@ar...>]

Hi there
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I downloaded Mesa 6.5 from Sourceforge yesterday, and have had a fair
old fight to make it compile on my HP-UX 11.11 PA-RISC Unix system due
to problems with the "make" and associated configuration files.
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I tried with the standard "make" supplied by HP, and also downloaded and
tried GNU make (gmake), but neither would run the files as supplied.
(Incidentally a "make" on Linux worked fine with the files as supplied,
so the problem is probably the fussiness of the HP versions.)
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The errors found (so far) were:
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(1) Line 68 in ./configs/default. =20
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Originally said "EXTRA_LIB_PATH ?=3D"
Changed to "EXTRA_LIB_PATH =3D"
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HP and GNU "make" seemed not to like the "?".
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(2) Line 191 in ./src/mesa/sources.
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This otherwise blank line started with a <tab>.  This seemed not to
bother "make" on my Linux system, but the HP versions really did *not*
like it! Removing it solved the problem.
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(3) HP-UX configuration files.
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There are several options provided (32/64 bit, static/dynamic
libraries). Some have clearly been used more than others, but the
following changes need to be made to the CC flags if MESA is to compile:
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Flag "-Aa" needs to be changed to "-Ae" to include HP extensions to the
ANSI C standard.  Otherwise file glxext.h will generate compilation
errors because of the non-standard "int_32t" and "int_64t" data types
used.  The alternative is to add some "#ifdef __hpux" lines to that
file, but why do things the hard way?
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I would recommend that flags "+O3" and "+Oaggressive" not be used as
they caused crashes on my system.  I would recommend a plain "-O"
instead: in my experience any loss in performance (small) is more than
offset by the gain in reliability (huge)!
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(4) The good news:
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Once I got it built it worked fine.  Image quality using software X11
MESA rendering was almost indistinguishable from that produced by the
ATI FireGL card in hardware mode and - so far as I can see - everything
works.  Truly a "plug and play" solution - thanks!
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And despite my problems with "make" thank you for not using "configure",
as this can be a nightmare on.
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Tests show that MESA seems ideal for the off-screen batch rendering we
want to do, so if we go ahead with this I shall be building on more
Unices (HP Itanium, Solaris, Irix, Aix, Tru64) and several different
Linux platforms.
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I hope that this the right place to report problems - if not please slap
my wrist and tell me where to send them (or perhaps just to shut up & go
away!)
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Christopher Bell
Arup
UK
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