Platform: Intel/Linux Problem Details: Date: 23-Nov-05 Q. What version of Absoft Fortran compiler is compatible with CD-Adapco STAR-CD? A.
Platform: All Problem Details: OS Version: All Product Version: All Date: 01-Sep-02 Q. Libraries and object files compiled with previous versions of func.o: In function `func':
func.o(.text+0x33): undefined reference to `___cdiv'
func.o(.text+0x38): undefined reference to `___casgn'
func.o(.text+0x3d): undefined reference to `___char'
func.o(.text+0x42): undefined reference to `___con'
...
collect2: ld returned 1 exit status
A. To avoid problems involving accidentally linking with C libraries, This file is provided for compatibility reasons only. If possible, it is highly recommended that you rebuild all object files and libraries with Pro Fortran 8.2.
Platform: Intel/Linux Problem Details: OS Version: 2.0 Product Version: any Date: 01-Sep-02 Q. When I declare large arrays (>8 MB of variables), I get a segmentation violation from Linux. A. Use the "-s" compiler option (static storage) to move the data from the stack to the heap or use the ulimit command (ulimit is a bash command - the csh equivalent to 'ulimit -s' is 'limit stack') to raise the stack size limit # ulimit -s 8192 # ulimit -s 32768 # ulimit -s 32768 Once raised the limit applies to the current process and any children of that process.
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Platform: Intel/Linux Problem Details: OS Version: Linux 1.2 and 2.* Product Version: any Date: 01-Sep-02 Q. I am trying to debug a mixed language program on Linux. Even though my C files are compiled with -g, Fx can't see them. A. You need to compile the C files with -gdwarf instead of -g.
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Platform: All Problem Details: OS Version: any Product Version: any Date: 01-Sep-02 Q. Where can I find IMSL documentation. A. The documentation for the IMSL libraries (7 volume set) may be purchased separately, or you can find it on line at: http://www.vni.com/products/imsl/alphabetized_functions.html
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Platform: Intel/Linux Problem Details: OS Version: Any Product Version: Fortran77 Date: 01-Sep-02 Q. Does FORTRAN 77 support the -r8 flag? A. Use the -N113 compiler option.
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Platform: Intel/Linux Problem Details: OS Version: any Product Version: any Date: 01-Sep-02 Q. I have a file which "uses" a precompiled module containing a function used by the main file. When I try to compile the main it says there is an unresolved reference. A. Your module contains executable code. Precompiling it created both a module file and an object file. Present the object file to the linker and the reference will be resolved. If you're compiling from the command line, simply add the object file on the compiler invocation line.
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Platform: Intel/Linux Problem Details: OS Version: any Product Version: ProFortran 8.0 Date: 01-Sep-02 Q. When I try to compile a program with the Fortran 90 compiler I get the following error message: cft90 INTERNAL: Cannot retrieve message 3 from the message system. What does this message mean? A. The error message file is: /opt/absoft/nls/cf90 This path is hard-wired into the compiler. However, if an environment variabled named NLSPATH is defined, the compiler will use it to attempt to locate the message file. Either unset this variable when you are using the Fortran 90 compiler, or add the path specified above to the variable: NLSPATH=/opt/absoft/lib/nls/cf90/ export NLSPATH
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Platform: all OS version: any Product Version: Pro Fortran 6.0 and later Q. How can I modify the default behavior of the Absoft runtime library? A. Starting with Absoft Pro Fortran 6.0 and Absoft Fortran SDK 4.5, the runtime library checks for an environment variable named ABSOFT_RT_FLAGS on entry to the first I/O statement in a program. The following switches can be specified using this variable: -defaultcarriage:
Causes the units preconnected to standard output to interperet
carriage control characters as if they had been connected with
ACTION='PRINT'.
-fileprompt: Causes the library to prompt the user for a filename when it
implicitly opens a file as the result of I/O to an unconnected
unit number. By default, the library creates a filename based on
the unit number.
-vaxnames: Causes the library to use 'vax style' names (FORnnn.DAT) when
creating a filename as the result of I/O to an unconnected
unit number.
-unixnames: Causes the library to use 'unix style' names (fort.nnn) when
creating a filename as the result of I/O to an unconnected
unit number.
-bigendian: Causes the library to interpret all unformatted files using
big endian byte ordering.
-littleendian: Causes the library to interpret all unformatted files using
little endian byte ordering.
-noleadzero: Causes the library to surpress the printing of leading zeroes
when processing an Fw.d edit descriptor. This only affects the
limited number of cases where the ANSI standard makes printing
of a leading zero implementation defined.
-reclen32: Causes the library to interpret the value specified for RECL=
in an OPEN statement as 32-bit words instead of bytes.
-f90nlexts: Allows f90 namelist reads to accept non-standard syntax for
array elements. Without this flag, the following input results
in a runtime error:
$ONE
A(1)=1,2,3,4
$END
When -f90nlexts is set, the values are assigned to the first
four elements of A.
-connectunit9 Causes UNIT 9 to be preconnected to standard input and output. -maceol Formatted sequential files are in Classic Macintosh format where each
record ends with a carriage return,
-doseol Formatted sequential files are in Windows format where each record ends
with a carriage return followed by a line feed.
-unixeol Formatted sequential files are in Unix format where each record ends with a line feed. -hex_uppercase Data written with the Z edit descriptor will use upper case characters for A-F. To set ABSOFT_RT_FLAGS: On Windows:
Open a command prompt window and enter:
set ABSOFT_RT_FLAGS=-fileprompt
On Mac OS 9:
Open the MPW worksheet and enter:
set -e ABSOFT_RT_FLAGS -fileprompt
On Mac OS X(using tcsh):
Open the terminal and enter:
setenv ABSOFT_RT_FLAGS -fileprompt
On Linux(using bash):
export ABSOFT_RT_FLAGS=-fileprompt
MRWE applications must be launched from the
command line so that the ABSOFT_RT_FLAGS
will be used.
Note: the leading minus sign is required for each switch and multiple
switches must be separated by one or more spaces.
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Platform: All Problem Details: OS Version: All Product Version: All Date: 01-Sep-02 Q. Does Absoft Fortran pass the lengths of strings like most Unix character*(*) string integer i value i double precision d print *, string, i, d, len(string) end APF75SP:cat c.c #include <string.h> void Fcode(char *, int, double *, int); int main()
{
char string[13] = {"hello, world"};
int i = 1;
double d = 2.0;
Fcode(string, i, &d, strlen(string)); return 0; } APF75SP:f77 t.f c.c FORTRAN 77 Compiler 7.5a, Copyright (c) 1987-2002, Absoft Corp. APF75SP:a.out hello, world 1 2.00000000000000 12 For more information on mixed Fortran and C programming See chapter 4 in the Pro Fortran for Linux user guide on Interfacing with other languages. You can use the -YVF_CHAR f95 option to change the argument passing convention from:
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Platform: Intel/Linux Problem Details: OS Version: Linux Product Version: any Date: 01-Sep-02 Q. Is there an execution argument for "xfx" that sets the path in which it should search for sources? A. You can use an environment variable or a command line argument: export FXSRCPATHS={colon separated list of directories} or: xfx -p {colon separated list of directories}
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Platform: Intel/Linux Problem Details: OS Version: Linux Product Version: Any Date: 01-Sep-02 Q. I am trying to link to some functions compiled with g77. When I compile my program I get linker errors and undefined reference to any of the necessary functions. A. Include the g77 runtime library libf2c.a in your compile line to make it an argument to the linker.
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Platform: All Problem Details: OS Version: Any Product Version: Any Date: 01-Sep-02 Q. I get the error message: "adjustable array is not a dummy argument" A. The most common cause of this is: subroutine some_name(a,b,n) real A(N), B(N) The FORTRAN 77 compiler is case sensitive by default. The easiest way to solve this type of problem is use a case folding option: -f or -N109.
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Platform: Intel/Linux Problem Details: OS Version: Linux Product Version: any Date: 01-Sep-02 Q. How can I control the processor FPU? A. You can use arm387 to control the FPU. This is an integer function built into the runtime library. Here are the definitions of the control arguments: fenv.inc: ! Intel specific FPU control constants for use with fpcontrol integer*4 FE_TONEAREST parameter ( FE_TONEAREST = (z'00000000')) integer*4 FE_TOWARDZERO parameter ( FE_TOWARDZERO = (z'00000C00')) integer*4 FE_UPWARD parameter ( FE_UPWARD = (z'00000800')) integer*4 FE_DOWNWARD parameter ( FE_DOWNWARD = (z'00000400')) integer*4 FE_INEXACT parameter ( FE_INEXACT = (z'00000020')) integer*4 FE_DIVBYZERO parameter ( FE_DIVBYZERO = (z'00000004')) integer*4 FE_UNDERFLOW parameter ( FE_UNDERFLOW = (z'00000010')) integer*4 FE_OVERFLOW parameter ( FE_OVERFLOW = (z'00000008')) integer*4 FE_INVALID parameter ( FE_INVALID = (z'00000001')) Then use arm387 as follows: test.f: implicit none include "fenv.inc" integer arm387 integer state * first retrieve the current state of the FPU state = arm387(0) * enable divide-by-zero exceptions (for example) state = arm387(state .and. .not. FE_DIVBYZERO) end
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Platform: Intel/Linux Problem Details: OS Version: Linux Product Version: any Date: 01-Sep-02 Q. If I want executable files to run on other linux systems which do not have the Absoft compiler installed, do I need to link the libraries statically or does that happen automatically? A. In order to statically link the libraries you must pass an argument to the linker on the command line like this: -X -static
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Platform: Intel/Linux Problem Details: OS Version: Linux Product Version: any Date: 01-Sep-02 Q. I have a program with some very large arrays; 500 MB and more. I have plenty of memory in my computer, but the program still core dumps immediately. A. First, be certain that you are using the '-s' (static storage) compiler option (f77 or f90). The default Linux stack size of 8 MB will not be sufficient. This is a problem with the Linux dynamic loader. You should be able to solve the problem by linking against static versions of the system libraries to avoid dynamic linking. Add this option to your compiler command line: -X -static
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Platform: Intel/Linux Problem Details: OS Version: Linux Product Version: 8.0 Date: 01-Sep-02 Q. I am trying to use a compiled g77 object with Absoft f77 or f90 and I receive these errors: test.o(.text+0x9): undefined reference to `s_wsle' test.o(.text+0x22): undefined reference to `do_lio' test.o(.text+0x2a): undefined reference to `e_wsle' A. You must link against the g77 runtime library f2c or g2c depending on your Linux distribution. Q. Ok, I added -lg2c and I still get an unresolved reference to the g77 subroutine that I am trying to call in F77? A. G77 folds all external names to lower case and appends a trailing underscore. You must add the -B108 and -f compiler options. Your compile line should look like this: f77 t.f test.o -lg2c -B108 -f For F90 you must also add -YEXT_NAMES="LCS" which folds all external symbolic names to lower case and -B108 that appends a trailing underscore. Your compile line should look like this: f90 t.f test.o -lg2c -B108 -YEXT_NAMES="LCS" Q. I am trying to use F77 with gcc. My C code compiles fine. When I try to use the compiled gcc object code with F77, I receive unresolved references for every call to the C math library that is in my C code? A. Add libm.a to your compile line like this: f77 t.f test.o -lm Q. Is there an equivalent of -fno-second-underscore in your compiler? I need to be able to link g77/gcc produced code that is compiled with this option. A. Do not use the -B108 f77/f90 compiler option. This is a back-end (code generator) option and has specific knowledge of the Linux environment; hence the double underscores. Instead, use a front-end option which is machine independent: f77: -N15 f90: -YEXT_SFX='_'
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Platform: All Problem Details: OS Version: Any Product Version: Any Date: 01-Sep-02 Q. Is there an F90 compiler option that will force the compiler to consider the byte ordering of all unformatted files to either big or little endian? A. Use the F90 open statement specifier: convert ={"big_endian"|"little_endian"} For example: Open(10,file="filename",form="unformatted",convert="big_endian") Or, use the ABSOFT_RT_FLAGS as described in the technical FAQ on using the ABSOFT_RT_FLAGS environment variable which can be found here: linux75tfaq.html#anchor0058
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Platform: Intel/Linux Problem Details: OS Version: Linux Product Version: 8.0 Date: 01-Sep-02 Q. I can't get the VMS (or Unix) libraries to link. A. The libraries contain three entry points for each function. One in all upper case, one in all upper case with a trailing underscore, and one in all lower case with a trailing underscore: DATE DATE_ date_ Be sure that your spelling matches one of these. The libraries are maintained in /opt/absoft/lib: /opt/absoft/lib/libV77.a VMS compatibility library /opt/absoft/lib/libU77.a Unix compatibility library For example: test.f: character*40 argument
n = IARGC()
do i=1,n
call GETARG(i,argument)
print *,trim(argument)
end do
end
$ f77 -1U77 test.f The VMS and Unix libraries are documented in: /opt/absoft/doc/supportLibrary.pdf
Platform: All Problem Details: OS Version: Any Product Version: 8.0 Date: 01-Sep-02 Q. Using more than 2GB of addressable memory
OS | Max process size
---------------------+--------------------
x86 Linux kernel 2.4 | 3GB
x86 Linux kernel 2.2 | 2GB
PPC Linux | 2GB
Windows | 2GB
Mac OSX | 2GB, 64MB max stack
F77 has a limit of 2GB for any single array, and 2,000,000,000 bytes for any single common block. To have the maximum amount of memory available for data on Linux, it is necessary to link your application statically. This is done by using the "-X -static" option for either f77 or f90. On x86 Linux there is also a limit in the GNU assembler that you can't have more than 2GB of static data (either save statements, or the -s switch) in a single file. If you try, you will get the following error: Error: attempt to .org backwards ignored To work around this, you can put some data into a common block.
Platform: Intel/Linux Problem Details: OS Version: Linux Product Version: any Date: 01-Sep-02 Q. I am trying to debug a mixed language program on Linux. Even though
Platform: Intel/Linux Problem Details: OS Version: Linux Product Version: any Date: 01-Sep-02 Q. When I try to compile a program with the Fortran 90 A. The error message file is: NLSPATH=/usr/lib/absoft/nls/%N This path is hard-wired into the compiler. However, if an environment variabled named NLSPATH is defined, the compiler will use it to attempt to locate the message file. Either unset this variable when you are using the Fortran 90 compiler, or add the path specified above to the variable: NLSPATH=/usr/lib/absoft/nls/cf90/%N export NLSPATH
Platform: Intel/Linux Problem Details: OS Version: Linux Product Version: any Date: 01-Sep-02 Q. Everytime I launch the curses version of Fx, I get the following error: Unable to uinitialize Fx interface, check value of TERM. I check the value of TERM and it seems ok. A. The location of the terminfo database moved in RedHat 6.0. Fx is looking set TERMINFO=/usr/share/terminfo export TERMINFO or setenv TERMINFO /usr/share/terminfo
Platform: Intel/Linux Problem Details: OS Version: Suse Linux Product Version: any Date: 01-Sep-02 Q. Every time I compile a program I get a warning message like: "warning: multiple common of `_io_comm'" "warning: previous common is here" A. You are probably using a SuSE implementation of Linux. For You can eliminate these warnings by reconfiguring your default options maintained in the "specs" file for gcc. On SuSE 6.0, edit the file: /usr/lib/gcc-lib/i486-linux/egcs-2.91.60/specs and remove ONLY -warn-common from the *.lib section On SuSE 6.1 and SuSE 6.2, edit the file /usr/lib/gcc-lib/i486-linux/egcs-2.91.66/specs and remove ONLY -warn-common from the *.lib section
Platform: Intel/Linux Problem Details: OS Version: Linux Product Version: 8.0 Date: 15-Oct-02 Q. I'm having problems using the IMSL functions. The linker reports A. You must include the IMSL and BLAS libraries: libimsl.a and libimslblas.a as an argument to the linker like this: f77 t.f -f -N15 -limsl -limslblas
f90 a.f -limsl -limslblas -YEXT_NAMES=LCS -YEXT_SFX=_
It is necessary to add the options -f(fold to lower case)
and the -N15(appends a trailing underscore) for F77 and
the corresponding F90 options, -YEXT_NAMES=LCS -YEXT_SFX=_
because the IMSL and BLAS libraries were compiled with these options.
The complete documentation which includes
Fortran source code examples is included in
/opt/absoft/doc
F9040.pdf
MATH.pdf
SFUN.pdf
STATVol1.pdf
STATVol2.pdf
Platform: Intel/Linux Problem Details: OS Version: Linux Product Version: Any Date: 11-Apr-03 Q. I receive the error message "execv of /usr/bin/as failed" when building my programs. A. "execv of /usr/bin/as failed" indicates that you do not have the system When you find the RPM on your cd, you can install it by typing: rpm -i <filename>.rpm You may also look on the internet for an RPM or other package for your Linux distribution. binutils source:
http://www.gnu.org/directory/binutils.html
Platform: ALL Problem Details: OS Version: all Product Version: all Date: 04-March-04 Q. Is it possible to assign a variable the value INF or NAN? Is there a built in function to test if a variable is a NAN or INF? A. Please see this file for routines to test real and double values against NaN and INF. Make sure to see the comments in naninfchk.f and compile for your system (Big Endian or Little Endian) A test program has also been provided.
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