Hi all,
I'm reading the GNU Make book I cannot understand the following syntax from the book.
If I run:
, I get the output:
I think I understand that line $(objects) : %.o : %.c produces line cc -c foo.c when the target is foo.o. This is because $(objects) : %.o : %.c is converted into foo.o : foo.c right?
But I cannot see the process that produces the second line: cc -o foo foo.o.
I have this program which has lots of source files in the directories
src
src/dir1
src/dir2
src/dir3... and so on
I am trying to understand the following Makefile:
CC = gcc
CFLAGS= -g -c -D_REENTRANT
SOURCES = src/main.c src/dir1/a.c src/dir1/b.c src/dir2/x.c src/dir2/y.c ...and so on... (5 Replies)
Consider in a makefile i have the target defined as:
pgm: a.o b.o
cmd;
To build .o, 2 rules are defind
.pc.o:
cmds
.c.o:
cmds
My question is which rule will take priority for compiling a.o and b.o when the target pgm is built.
Despite the positoning of the 2 rules, .c.o... (1 Reply)
Hi:
I have a library that it only offers Makefile for building static library. It built libxxx.a file. How do I in any way build a shared library? (either changin the Makefile or direct script or command to build shared library)
Thanks. (1 Reply)
hello, i need help on setting my coyote linux, i've working on this for last 5 days, can't get it to work. I've been posting this message to coyote forum, and other linux forum, but haven't get any answer yet. Hope someone here can help me...... please see my attached picture first.
... (0 Replies)
Hi,
The following is my Makefile, I wanted to add a staic library named libtimer.a. I'm using the following Makefile. Please let me know how to add this static library:
Makefile:-
It produces "usbserial" executable.
Thanks,
S (1 Reply)
I am having a devil of a time with a very simple make file. The program needs two shared and one static library. If I link the shared libraries only like below the mysql test app works
... (1 Reply)
I'm writing a program which uses curl to be run on Linux PCs which will be used by a number of different users. I cannot make the users all install curl on their individual machines, so I have tried to link curl in statically, rather than using libcurl.so. I downloaded the source and created a... (8 Replies)
I have the following code. I want to remove the --sort=num/num/... and am
using grep to exclude it as shown below:
I have a bit of problem figuring out the use of - at the front
echo "--sort=4/5/6" | grep -ivE '-((sort|group)=+/+(/+)*)$'
Now suppose I want to remove --quiet
I can... (7 Replies)
Hi all,
I'm having a hard time compiling a plugin (softhddevice) for the video disk recorder software (vdr). Unfortunately the last official version of the plugin was published back in 2013 and even worse it has to be compiled against ffmpeg. The last working version of ffmpeg was 2.8.x,... (0 Replies)
I have a big makefile that I am trying to get my head around, this line is what is confusing me.
LDFLAGS = -Wl,-rpath-link,$(SYSROOT)/lib/arm-linux-gnueabihf,-rpath-link,$(SYSROOT)/usr/lib/arm-linux-gnueabihf --sysroot=$(SYSROOT) -L$(SYSROOT)/lib -L$(SYSROOT)/usr/lib... (5 Replies)
Perl::Critic::Policy::ValuesAndExpressions::ProhibitMixeUserlContributPerl::Critic::Policy::ValuesAndExpressions::ProhibitMixedBooleanOperators(3)NAME
Perl::Critic::Policy::ValuesAndExpressions::ProhibitMixedBooleanOperators - Write " !$foo && $bar || $baz " instead of " not $foo && $bar
or $baz".
AFFILIATION
This Policy is part of the core Perl::Critic distribution.
DESCRIPTION
Conway advises against combining the low-precedence booleans ( "and or not" ) with the high-precedence boolean operators ( "&& || !" ) in
the same expression. Unless you fully understand the differences between the high and low-precedence operators, it is easy to misinterpret
expressions that use both. And even if you do understand them, it is not always clear if the author actually intended it.
next if not $foo || $bar; #not ok
next if !$foo || $bar; #ok
next if !( $foo || $bar ); #ok
CONFIGURATION
This Policy is not configurable except for the standard options.
AUTHOR
Jeffrey Ryan Thalhammer <jeff@imaginative-software.com>
COPYRIGHT
Copyright (c) 2005-2011 Imaginative Software Systems. All rights reserved.
This program is free software; you can redistribute it and/or modify it under the same terms as Perl itself. The full text of this license
can be found in the LICENSE file included with this module.
perl v5.16.320Perl::Critic::Policy::ValuesAndExpressions::ProhibitMixedBooleanOperators(3)