From owner-bug-octave at bevo dot che dot wisc dot edu Fri Dec 13 06:08:01 1996 From: "C. Burger" To: bug-octave at bevo dot che dot wisc dot edu Date: Fri, 13 Dec 1996 13:03:33 +0100 To: bug-octave at bevo dot che dot wisc dot edu Subject: Octave configuration options Not a bug report for Octave 2.0 configured for i586-pc-linux-gnu :) Finally, 2.0 has been released. Thank you very much for your great work, John. I would like to discuss some configuration aspects for octave under Linux. I have compiled octave, especially the prereleases, several times with varying options during the last months. I came to the conclusion that the configuration enclosed below gives me optimal results. --enable-dl is crucial for me since I'm using this feature. --enable-shared and --enable-lite-kernel produce the smallest binaries. All the shared libs and also the .oct files are stripped. To save space, I don't install the static libs. Performance-wise, I certainly want "-O2 -fomit-frame-pointer" in my compiler FLAGS. -O3 produces faster code at the cost of larger binaries. gcc-2.7.2.1 does not seem to suffer from the strength-reduce bug so this optimization is not suppressed. For a pentium system, the proper alignments "-malign-loops=2 -malign-jumps=2 -malign-functions=2" lead to significantly faster and smaller binaries. Most of the 10-20% speed increase advertised for the so-called pentium-enhanced gccs is due to this alignment. These settings are added to the *cc1 section in gcc's specs file. I found that cc1plus would also include the *cc1 specs entry but f771 would not. This means, the proper aligment options have to be manually added to the FFLAGS here. Any comments or suggestions for further improvement? Christian -=----- Christian Burger, MPI Colloids & Interfaces, D-14513 Teltow, Germany e-mail: burger at mpikg-teltow dot mpg dot de,| (Phone|FAX): +49-3328-46-(581 (Phone|FAX): +49-3328-46-(581|599) Configuration (please do not edit this section): ----------------------------------------------- uname output: Linux luna 2.0.27 #14 Sun Dec 1 22:54:44 MET 1996 i586 configure opts: --enable-dl --enable-shared --enable-lite-kernel Fortran compiler: g77 FFLAGS: -pipe -O2 -fomit-frame-pointer -malign-loops=2 -malign-jumps=2 -malign-functions=2 F2C: F2CFLAGS: FLIBS: -lf2c -L/usr/lib/gcc-lib/i586-linux/2.7.2.1 -lgcc CPPFLAGS: INCFLAGS: -I/usr/local/include -I/usr/local/include/octave-2.0 C compiler: gcc, version 2.7.2.1 CFLAGS: -DHAVE_CONFIG_H -mieee-fp -pipe -O2 -fomit-frame-pointer CPICFLAG: -fPIC C++ compiler: c++, version 2.7.2.1 CXXFLAGS: -DHAVE_CONFIG_H -fno-implicit-templates -mieee-fp -pipe -O2 -fomit-frame-pointer CXXPICFLAG: -fPIC LDFLAGS: LIBFLAGS: -L/usr/local/lib RLD_FLAG: -Xlinker -rpath -Xlinker /usr/local/lib CXXLIBS: -lstdc++ -lm -L/usr/lib/gcc-lib/i586-linux/2.7.2.1 -lstdc++ -lm -lgcc -lc -lgcc TERMLIBS: -ltermcap LIBS: LEXLIB: LIBPLPLOT: LIBDLFCN: DEFS: -DOCTAVE_SOURCE=1 -DSEPCHAR=':' -DSEPCHAR_STR=":" -DUSE_GNU_INFO=1 -DUSE_READLINE=1 -DOCTAVE_LITE=1 -DSIZEOF_SHORT=2 -DSIZEOF_INT=4 -DSIZEOF_LONG=4 -DHAVE_ALLOCA_H=1 -DHAVE_ALLOCA=1 -DF77_APPEND_UNDERSCORE=1 -DSTDC_HEADERS=1 -DHAVE_DIRENT_H=1 -DTIME_WITH_SYS_TIME=1 -DHAVE_SYS_WAIT_H=1 -DHAVE_ASSERT_H=1 -DHAVE_FCNTL_H=1 -DHAVE_FLOAT_H=1 -DHAVE_GRP_H=1 -DHAVE_LIMITS_H=1 -DHAVE_MEMORY_H=1 -DHAVE_NAN_H=1 -DHAVE_PWD_H=1 -DHAVE_STDLIB_H=1 -DHAVE_STRING_H=1 -DHAVE_SYS_PARAM_H=1 -DHAVE_SYS_RESOURCE_H=1 -DHAVE_SYS_STAT_H=1 -DHAVE_SYS_TIME_H=1 -DHAVE_SYS_TIMES_H=1 -DHAVE_SYS_TYPES_H=1 -DHAVE_SYS_UTSNAME_H=1 -DHAVE_TERMCAP_H=1 -DHAVE_TERMIO_H=1 -DHAVE_TERMIOS_H=1 -DHAVE_UNISTD_H=1 -DHAVE_VARARGS_H=1 -DNPSOL_MISSING=1 -DQPSOL_MISSING=1 -DFSQP_MISSING=1 -DHAVE_ATEXIT=1 -DHAVE_BCOPY=1 -DHAVE_BZERO=1 -DHAVE_DUP2=1 -DHAVE_ENDGRENT=1 -DHAVE_ENDPWENT=1 -DHAVE_EXECVP=1 -DHAVE_FCNTL=1 -DHAVE_FORK=1 -DHAVE_GETCWD=1 -DHAVE_GETEGID=1 -DHAVE_GETEUID=1 -DHAVE_GETGID=1 -DHAVE_GETGRENT=1 -DHAVE_GETGRGID=1 -DHAVE_GETGRNAM=1 -DHAVE_GETHOSTNAME=1 -DHAVE_GETPGRP=1 -DHAVE_GETPID=1 -DHAVE_GETPPID=1 -DHAVE_GETPWENT=1 -DHAVE_GETPWNAM=1 -DHAVE_GETPWUID=1 -DHAVE_GETUID=1 -DHAVE_LSTAT=1 -DHAVE_MEMMOVE=1 -DHAVE_MKDIR=1 -DHAVE_MKFIFO=1 -DHAVE_ON_EXIT=1 -DHAVE_PIPE=1 -DHAVE_PUTENV=1 -DHAVE_RENAME=1 -DHAVE_RINDEX=1 -DHAVE_RMDIR=1 -DHAVE_SETGRENT=1 -DHAVE_SETPWENT=1 -DHAVE_SETVBUF=1 -DHAVE_SIGACTION=1 -DHAVE_SIGPENDING=1 -DHAVE_SIGPROCMASK=1 -DHAVE_SIGSUSPEND=1 -DHAVE_STAT=1 -DHAVE_STRCASECMP=1 -DHAVE_STRDUP=1 -DHAVE_STRERROR=1 -DHAVE_STRNCASECMP=1 -DHAVE_TEMPNAM=1 -DHAVE_UMASK=1 -DHAVE_UNLINK=1 -DHAVE_VFPRINTF=1 -DHAVE_VSPRINTF=1 -DHAVE_WAITPID=1 -DHAVE_LIBDL=1 -DHAVE_DLOPEN=1 -DHAVE_DLSYM=1 -DHAVE_DLERROR=1 -DHAVE_DLCLOSE=1 -DWITH_DL=1 -DWITH_DYNAMIC_LINKING=1 -DHAVE_LIBM=1 -DHAVE_FINITE=1 -DHAVE_ISNAN=1 -DHAVE_ISINF=1 -DHAVE_ACOSH=1 -DHAVE_ASINH=1 -DHAVE_ATANH=1 -DHAVE_ERF=1 -DHAVE_ERFC=1 -DHAVE_ST_BLKSIZE=1 -DHAVE_ST_BLOCKS=1 -DHAVE_ST_RDEV=1 -DHAVE_TZNAME=1 -DHAVE_GR_PASSWD=1 -DRETSIGTYPE=void -DSYS_SIGLIST_DECLARED=1 -DHAVE_SYS_SIGLIST=1 -DHAVE_POSIX_SIGNALS=1 -DHAVE_GETRUSAGE=1 -DHAVE_TIMES=1 -DGNUPLOT_HAS_MULTIPLOT=1 -DGNUPLOT_HAS_FRAMES=1