The echo commands are not your problem. There is a huge difference between:
and:
The first says that $(mn)/getvel_main.cpp is a dependency that has to be brought up-to-date before test can be built. The second says that the command $(mn)/getvel_main.cpp must be executed as the first step to create test.
The errors you are seeing are from trying to execute $(mn)/getvel_main.cpp.
These 2 Users Gave Thanks to Don Cragun For This Post:
Hi, i have am make file problem too. It is driving me mad!
My make file is:
Code:
program : main.o a.o b.o
cc -o program main.o a.o b.o
main.o : main.c
cc -c main.c
a.o : a.c
cc -c a.c
b.o : b.c
cc -c b.c
When I run it i just get the following error... (2 Replies)
Hi,
I am trying to make 2 programs using a makefile..
1. gcc aaa.c -o aaa -lrt
2. gcc bbb.c -o bbb -lrt
The makefile for the same has been done as follows....
Show Recent Messages (F3)
CC=gcc
CFLAGS=-g
all: aaa bbb
aaa: aaa.o
$(CC) $(CFLAGS) -o $@ aaa.o (2 Replies)
Hi
When i am compile the makefile i am getting this error.
make: Fatal error in reader: Makefile, line 25: Extra `:', `::', or `:=' on dependency line
Following Content is the makefile.
HDR_INSTALL = CommonDb.h rpts.h rptslogfmts.h
CCFLAGS+= -g -v
BINDIR = $(INSTALLROOT)/bin... (0 Replies)
helo when i compling my project from the commandline using
Make file
make all i got the following error
make all
/usr/bin/gcc -DNDEBUG -O0 -finline-functions -fmerge-constants -fmove-all-movables -fno-omit-frame-pointer -I../../lsapi -c -o lsapitest.o lsapitest.c
g++ lsapitest.o... (2 Replies)
Hi,
I am getting the follwing error while i was running the shell script to make the build.
make: Fatal error in reader: Makefile.Solaris_2.6, line 157: Unexpected end of
line seen .
May i knwo what does this mean.The line 157 has the last file that is supposed to be copied from the... (2 Replies)
Hi, I'm trying to run the module load command in a Makefile and i'm getting the following error:
make: module: command not found
Why is this? Is there any way to run this command in a Makefile?
NOTE: command - module load msjava/sunjdk/1.5.0 works fine outside of the Makefile (2 Replies)
Hi,
I had created makefile to compile and create .exe file.
but while executing makefile i am receiving following error
I can create obj and lib files but not able to create executeable file due to following error.
0711-317 Error: undefined symbol: .fn_error(......)
0711-345 use the... (2 Replies)
I am able to 'Make' some of projects's modules using GNU's make except one where it throws me the following error
gmake -f Makefile
/bin/sh: syntax error at line 1: `if' unexpected
gmake: *** Error 2
I am sure it has nothing to do with the Makefile as there is no 'if' in the first... (1 Reply)
Use and complete the template provided. The entire template must be completed. If you don't, your post may be deleted!
1. The problem statement, all variables and given/known data:
Basically, the prompt is make a makefile with various sub makefiles in their respective subdirectories. All code... (1 Reply)
Discussion started by: Tatl
1 Replies
LEARN ABOUT DEBIAN
bup-margin
bup-margin(1) General Commands Manual bup-margin(1)NAME
bup-margin - figure out your deduplication safety margin
SYNOPSIS
bup margin [options...]
DESCRIPTION
bup margin iterates through all objects in your bup repository, calculating the largest number of prefix bits shared between any two
entries. This number, n, identifies the longest subset of SHA-1 you could use and still encounter a collision between your object ids.
For example, one system that was tested had a collection of 11 million objects (70 GB), and bup margin returned 45. That means a 46-bit
hash would be sufficient to avoid all collisions among that set of objects; each object in that repository could be uniquely identified by
its first 46 bits.
The number of bits needed seems to increase by about 1 or 2 for every doubling of the number of objects. Since SHA-1 hashes have 160 bits,
that leaves 115 bits of margin. Of course, because SHA-1 hashes are essentially random, it's theoretically possible to use many more bits
with far fewer objects.
If you're paranoid about the possibility of SHA-1 collisions, you can monitor your repository by running bup margin occasionally to see if
you're getting dangerously close to 160 bits.
OPTIONS --predict
Guess the offset into each index file where a particular object will appear, and report the maximum deviation of the correct answer
from the guess. This is potentially useful for tuning an interpolation search algorithm.
--ignore-midx
don't use .midx files, use only .idx files. This is only really useful when used with --predict.
EXAMPLE
$ bup margin
Reading indexes: 100.00% (1612581/1612581), done.
40
40 matching prefix bits
1.94 bits per doubling
120 bits (61.86 doublings) remaining
4.19338e+18 times larger is possible
Everyone on earth could have 625878182 data sets
like yours, all in one repository, and we would
expect 1 object collision.
$ bup margin --predict
PackIdxList: using 1 index.
Reading indexes: 100.00% (1612581/1612581), done.
915 of 1612581 (0.057%)
SEE ALSO bup-midx(1), bup-save(1)BUP
Part of the bup(1) suite.
AUTHORS
Avery Pennarun <apenwarr@gmail.com>.
Bup unknown-bup-margin(1)