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docs-mini/README.IRIX
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V. Procedure to build FGFS with Native SGI Irix Compilers from CVS Sources
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==========================================================================
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(Contributed by Todd Smith <msmith@sikorsky.com> with modifications
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and updates by Curt Olson)
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Download the latest version of plib (1.0.18) from:
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http://www.woodsoup.org/~sbaker/plib/
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Configure it with the default prefix of /usr/local which places
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everthing in a tree rooted at /usr/local/plib:
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sh$ CC="cc -Xcpluscomm" CXX=CC ./configure
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*Before* running make, fix up the plib Makefiles using the script
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provided with the FlightGear distribution:
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find . -name Makefile -exec .../src/FlightGear-0.7.x/irix-hack.pl {} \;
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This applies a fix in all the Makefiles to the lib creation command
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(to use CC -ar rather than ar) as per a tip in the SGI pipeline
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periodical.
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Now, make and install plib.
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Download the latest fgfs source snapshot from:
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ftp://ftp.flightgear.org/pub/fgfs/Source/Snapshots/
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Configure and build fgfs as you did plib:
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sh$ CC="cc -Xcpluscomm" CXX=CC ./configure
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sh$ find . -name Makefile -exec .../src/FlightGear-0.7.x/irix-hack.pl {} \;
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VI. Additional Notes for Building on IRIX from CVS Sources
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==========================================================
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(Contributed by Todd Smith <msmith@sikorsky.com>)
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and updates by Curt Olson)
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Download the FlightGear-0.7.x via anonymous cvs as usual, then do:
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> aclocal # normal
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> automake -a -i # added '-i' flag to avoid dependency calc
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# that only sgi cc/CC doesn't support
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> autoconf # normal
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Note the change in automake's command argument.
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Now set env variables to use native compilers (csh syntax).
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> setenv CC cc
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> setenv CXX CC
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> setenv CFLAGS '-Xcpluscomm -DEBUG:suppress=1001,1012,1014,
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1116,1172,1174,1401,1460,1551,1552'
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> setenv CXXFLAGS '-DEBUG:suppress=1001,1012,1014,1116,1172,
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1174,1401,1460,1551,1552,3303,3322'
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The '-DEBUG:suppress=' stuff just suppresses anonying warnings during
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compile. The meaning of each one is shown later in this file.
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You can use all or none of these here.
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> setenv CPPFLAGS '-woff 1014'
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This is required so that configure will really believe that plib
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is installed. ( Otherwise a compiler warning makes configure
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that plib/pu.h couldn't be found. )
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> ./configure
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> find . -name Makefile -exec irix-hack.pl {} \; # normal irix hack
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> gmake
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Runs great.
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Todd
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msmith@sikorsky.com
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-------------------------------------------
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Warnings that I get. Ignore at your lesiure.
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C and C++:
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warning(1001): last line of file ends without a newline
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warning(1012): parsing restarts here after previous syntax error
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warning(1014): extra text after expected end of preprocessing directive (breaks configure)
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warning(1116): non-void function "poly_index_init" should return a value
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warning(1172): subscript out of range
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warning(1174): variable "j" was declared but never referenced
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warning(1401): qualified name is not allowed in member declaration
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warning(1460): function "..." redeclared "inline" after being called
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warning(1551): variable "Altitude" is used before its value is set
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warning(1552): variable "last" was set but never used
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C++ only:
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warning(3303): type qualifier on return type is meaningless
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warning(3322): omission of explicit type is nonstandard ("int" assumed)
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VII. Additional Native SGI Irix Compilers Notes
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==============================================
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Fixing all the Makefiles' with irix-hack.pl is *VERY* important for
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your success):
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find . -name Makefile -exec irix-hack.pl {} \;
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This touches up the Makefiles to build libfoo.a with
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CC -ar -o libfoo.a file1.o file2.o ...
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The traditional method is to run:
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ar cru libfoo.a file1.o file2.o
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I wonder if this means that the native SGI "ar" is somewhat broke?
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Note, you should make sure you have perl installed on your system. The
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"irix-hack.pl" script assumes that perl is located in /usr/bin/perl so
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if this isn't the proper location on your system, change it in the first
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line of "irix-hack.pl" before running the above command. One way to see
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if perl is on your system (and determine where) is to run:
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which perl
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Perl can be installed from "eoe.sw.gifts_perl" or can be fetched and
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built from the net.
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Finally you should run Gnu make. The native Irix make utility just
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can't handle the makefiles generated by the automake program. Thus
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you will need to use Gnu make. It's called "gmake" on my system so I
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just run:
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gmake
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Don't worry about the make failing in the Tools directory. That's all
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under construction stuff right now (10/7/99) and if you get that far,
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rejoice because it means the simulator was successfully built in the
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Simulator/Main subdirectory.
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Special note for those Irix users using the native compilers *AND* checking
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out the current source tree via CVS:
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You will need to run "aclocal ; automake -a ; autoconf" as per
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README.autoconf, but you need an additional flag for automake to disable
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automatic dependency building (which breaks the native Irix compilers.)
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You should instead run:
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aclocal ; automake -a --include-deps; autoconf
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Then, proceed on to the configure step.
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Questions? I realize this section is a big heap of random information so
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if something isn't quite working for you, please ask.
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