The old g77 FORTRAN compiler of GCC which has been replaced by gfortran since release 4.0.
Questions tagged [g77]
49 questions
1
vote
2 answers
How to install the GNU Fortran 77 compiler or g77 on Ubuntu 14.04
I have a library which needs g77 compiler.
I found few methods online; but each failed. Here is summary of two of my efforts:
1) I downloaded the packages, untar it and
$ sudo ./install.sh
Selecting previously unselected package…
Garima Singh
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2 answers
Mixed programming: Calling FORTRAN from C
I have to do a proof of concept on calling FORTRAN subroutines from C/C++.
I don't know what I am in right direction, please guide me....
What I did is...
I wrote the following FORTRAN code
INTEGER*4 FUNCTION Fact (n)
INTEGER*4 n
INTEGER*4 i,…
StackIT
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1
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1 answer
The Make and Shell Command Option in g77
What do the make and shell option mean in g77? For example, if I have the following script in my Makefile:
FC = g77
FFLAGS = -O2 -mno-cygwin
LDFLAGS =
CD = cd
LN = ln
LNFLAGS = -s
MAKE = /bin/make
RM = rm
RMFLAGS = -f
SHELL = /bin/sh
Does this mean…
Graviton
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0 answers
f2py: limit.h file missing in numpy in Windows
I’m having trouble compiling some FortranIV code using f2py and the g77 compiler. I need to do this to call some very old code written in Fortran to an already existing Python module. I have gcc installed through MinGW but I’m not sure if that makes…
1
vote
0 answers
f77 code in gfortran - library call
I've inherited an old f77/g77 program from a previous researcher, but have very little Fortran experience. I've worked through most of the syntax conversion in the file, but I'm running into an issue where the old file calls a (deprecated?) library…
Dustin Wheeler
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1 answer
g77 version 3.2 creates large object file with the option -finit-local-zero
I'm working with a legacy + academic + numerical fortran-77 code that requires g77 3.2.x in order to compile and run successfully ... I'm using that compiler on Red Hat Linux 9 for i386
One of those fortran-77 files defines a subroutine with lots of…
Yudle Joza
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1 answer
Using DLLs in g77
I'm using the old g77 compiler (http://people.tamu.edu/~matthewmccleskey/g77.html) but can't seem to find out how to use external DLLs in my code. Is it even possible, or would I have to get a newer compiler?
I have both DLL and LIB file.. The…
Kols
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0
votes
1 answer
Real vs. Integer in Fortran
I have a program which loops over one variable and computes a value at each step:
program cpout
implicit none
!declarations
integer, parameter :: dp = selected_real_kind(15)
! kind value for double precision
…
astay13
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g77 compiler cannot find -lgcc_s
I am trying to compile a model which is written in FORTRAN 77. I am not able to make the link for g77.
I am using Ubuntu 20.04.3 LTS.
I am getting the below error
/usr/bin/ld: cannot find -lgcc_s
collect2: ld returned 1 exit status
make: *** [exe]…
0
votes
0 answers
interfacing g77 and free pascal
I have forced a free-pascal object to almost-work with a g77 main. The problem is that the g77 loader does not load a pascal library, so any attempt to insert writeln in the pascal code fails because FPC-IOCHECK, fpc_get_output .. are not found.…
pietrospizzo
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0
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g77 : ld: warnings on version-min, and on object file
I need help compiling old legacy fortran with g77 :
(1) The system on OS X 10.12.6, XCode 9.2, and g77 -v returns "Reading specs from /usr/local/lib/gcc/i686-apple-darwin8.8.1/3.4.0/specs Configured with: ../gcc-3.4.0/configure…
JPGConnolly
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0
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1 answer
How to correct "gfortran can't find path" in VIsual studio code settings?
I have recently downloaded MinGw and g77 compiler for Fortran and it is based in my root directory. I also installed visual studio code to go with it. After installing extensions (related to fortran) in the text editor, there have been pop-ups that…
Nyx_Valatoria
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1 answer
make g77 command not found
I am trying to make a project:
https://www.cs.virginia.edu/stream/FTP/Code/
it reports:
make: g77 command not found.
I saw this line in Makefile:
FF = g77
Can I change 'g77' here to something else to compile in the current OS, ex: Ubuntu 18.04?
GreenTea
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0
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1 answer
Error while trying trying to run make command
I am trying to install a program and when I run make or make -f Makefile (following the installation instructions) I get the following output:
g77 -O5 -Wall -c prep_output.f -o prep_output.o
dyld: Symbol not found: ___keymgr_global
Referenced…
pchar
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0
votes
2 answers
Recompiling an old Fortran program and getting this error
The section of code looks like this;
DO i = 1 , no2 + 1
IF ( Isign.EQ.1 ) THEN
Ans(i) = fft(i)*Ans(i)/no2
ELSEIF ( Isign.EQ.-1 ) THEN
IF ( ABS(Ans(i)) .EQ. 0.0 )
& PAUSE ' deconvolving at responce zero in convlv'
…
Mike Hansen
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