Re: echo inside Makefile
Oron Peled [EMAIL PROTECTED] writes: The correctness of you assertion greatly depends on which those you mean. Sunos (which was the dominant Unix throughout the 80's and the beginning of the 90's) had /bin/csh as default. BTW, this explains how some parts in the academic world got the weird idea of teaching scripting in csh. I thought Bourne sh was the installation default on SunOS, too. It certainly predates csh. However, csh was originally written by Bill Joy, if memopry serves, so it well may be that it was the default on SunOS. I'll trust your memory more than mine. Does the Single UNIX Specification mandate that Bourne sh be present on compliant systems? Google shows Wikipedia (http://en.wikipedia.org/wiki/Single_UNIX_Specification) as the first hit (rather than the SPec itself, curiously), and the article says so. I suspect that http://www.opengroup.org/onlinepubs/009695399/utilities/echo.html is the definitive document regarding echo. To quote: Implementations shall not support any options. It is not possible to use echo portably across all POSIX systems unless both -n (as the first argument) and escape sequences are omitted. New applications are encouraged to use printf instead of echo. b) consider #!/bin/bash even for portable code (restricting it to systems with bash installed, of course). Hmmm... I disagree, but I'll leave it as a religious subject ;-) Hmmm... Consider the key word consider - maybe it's not so religious... ;-) -- Oleg Goldshmidt | [EMAIL PROTECTED] | http://www.goldshmidt.org = To unsubscribe, send mail to [EMAIL PROTECTED] with the word unsubscribe in the message body, e.g., run the command echo unsubscribe | mail [EMAIL PROTECTED]
Re: echo inside Makefile
On Friday, 23 בNovember 2007, Oleg Goldshmidt wrote: Amos Shapira [EMAIL PROTECTED] writes: - properly-written shell scripts shouldn't depend on their environment Hmmm... I hope you don't advocate massive overriding of environment variables in shell scripts: PATH, HOME, TERM and zillions of others are meant to be inheritted. That's what the environment is for. What shell scripts *should* depend is standard behaviour, both of the shell and many other standard utilities (ls, tar, pwd, etc). But t?csh was *not* the default interactive shell on those systems. I The correctness of you assertion greatly depends on which those you mean. Sunos (which was the dominant Unix throughout the 80's and the beginning of the 90's) had /bin/csh as default. BTW, this explains how some parts in the academic world got the weird idea of teaching scripting in csh. For reasons of portability that you mentioned yourself, the default SHELL used by many programs (e.g., make) is /bin/sh. That is what changed on Kfir's system, changed in a way that a user cannot override Completely agree. ...and it turned out that as a result a utility so basic as echo did not implement any options (-n and -e are just about the only options echo has). Berkeley 'echo': Uses the -n option to suppress newlines. System-V 'echo' (base of POSIX standard): Uses escapes (\c to cancel newline, \t for tab, etc). Linux /bin/echo: Berkeley like with some extra options (including a -e to enable Sys-V escapes). Bash: ditto. Tcsh: configurable behaviour depending on $echo_style So it's risky to take echo for granted. What you thought as standard (bash behaviour) is actually an extension of the standard. But there is a lesson here somewhere: a) don't use echo options in portable #!/bin/sh scripts; Good advice. b) consider #!/bin/bash even for portable code (restricting it to systems with bash installed, of course). Hmmm... I disagree, but I'll leave it as a religious subject ;-) -- Oron Peled Voice/Fax: +972-4-8228492 [EMAIL PROTECTED] http://www.actcom.co.il/~oron ICQ UIN: 16527398 Copyright protects Software. Patents protect Software Monopolies. http://swpat.ffii.org/ To unsubscribe, send mail to [EMAIL PROTECTED] with the word unsubscribe in the message body, e.g., run the command echo unsubscribe | mail [EMAIL PROTECTED]
Re: echo inside Makefile
Do note that this symlink is a result of a divert made by dash's installation. The *right* solution is to either uninstall the 'dash' package or at least to remove the divert (using the dpkg-divert utility). On Nov 22, 2007 9:53 AM, Kfir Lavi [EMAIL PROTECTED] wrote: Yep, The thing is that make uses /bin/sh and /bin/sh - dash. Changing the link /bin/sh to point to bash solved the problem. Thanks all for your help.
Re: echo inside Makefile
Kfir Lavi [EMAIL PROTECTED] writes: Yep, The thing is that make uses /bin/sh and /bin/sh - dash. Changing the link /bin/sh to point to bash solved the problem. If you don't want to change your installation, put SHELL=/bin/bash at the top of your Makefile. This is probably a good idea for portability if you don't trust the user's $SHELL to have all the needed features. Speaking of which, live and learn - I had no idea what dash was before it was mentioned in this thread, so I read up for a few minutes (I know of ash, I didn't realize they were related, nor did I know that ash had a different echo(1)). I am not sure I am ready to consider Debian's idea of keeping bash as the default interactive shell and dash as /bin/sh (the default $SHELL) quite sane. i think it breaks the principle of least astonishment. Besides, Ubuntu is not exactly intended for embedded use where the extra few dozen Kb or whatever or whatever runtime savings you can get from builtin echo and test would be important. I wonder how much it screws up. I imagine there are quite a few #!/bin/sh scripts and makefiles without explicit SHELL override and what not that expect echo options, regular expressions, and other stuff ash/dash does not provide. Yes, I realize that it is technically careless. That's no excuse for keeping the default interactive shell different from the default environment shell on a desktop system. -- Oleg Goldshmidt | [EMAIL PROTECTED] | http://www.goldshmidt.org = To unsubscribe, send mail to [EMAIL PROTECTED] with the word unsubscribe in the message body, e.g., run the command echo unsubscribe | mail [EMAIL PROTECTED]
Re: echo inside Makefile
On Nov 22, 2007 6:23 PM, Oleg Goldshmidt [EMAIL PROTECTED] wrote: Kfir Lavi [EMAIL PROTECTED] writes: Yep, The thing is that make uses /bin/sh and /bin/sh - dash. Changing the link /bin/sh to point to bash solved the problem. If you don't want to change your installation, put SHELL=/bin/bash at the top of your Makefile. This is probably a good idea for portability if you don't trust the user's $SHELL to have all the needed features. Speaking of which, live and learn - I had no idea what dash was before it was mentioned in this thread, so I read up for a few minutes (I know of ash, I didn't realize they were related, nor did I know that ash had a different echo(1)). I am not sure I am ready to consider Debian's idea of keeping bash as the default interactive shell and dash as /bin/sh (the default $SHELL) quite sane. i think it breaks the principle of least astonishment. Besides, Ubuntu is not exactly intended for embedded use where the extra few dozen Kb or whatever or whatever runtime savings you can get from builtin echo and test would be important. I wonder how much it screws up. I imagine there are quite a few #!/bin/sh scripts and makefiles without explicit SHELL override and what not that expect echo options, regular expressions, and other stuff ash/dash does not provide. Yes, I realize that it is technically careless. That's no excuse for keeping the default interactive shell different from the default environment shell on a desktop system. -- Oleg Goldshmidt | [EMAIL PROTECTED] | http://www.goldshmidt.org I use Ubuntu because thats what all my team uses. If I had the choice, I would go with Gentoo or Debian. As for the embedded system, my Ubuntu is just a host for compilation of embedded environment. We use snapgear, which is virtually stable version of uclinux.
Re: echo inside Makefile
On 22/11/2007, Oleg Goldshmidt [EMAIL PROTECTED] wrote: If you don't want to change your installation, put SHELL=/bin/bash at the top of your Makefile. This is probably a good idea for portability if you don't trust the user's $SHELL to have all the needed features. 1. As far as I followed the thread he said at an early stage that he'd rather not touch the Makefile because it's auto-generated. 2. For maximum portability it's most probably best to just avoid dependency on bash at all and stick to /bin/sh. I wonder how much it screws up. I imagine there are quite a few #!/bin/sh scripts and makefiles without explicit SHELL override and I think one of Debian's policies is to avoid dependency on bash in scripts for exactly that reason - it's not always available (e.g. during installation?). what not that expect echo options, regular expressions, and other stuff ash/dash does not provide. Yes, I realize that it is technically careless. That's no excuse for keeping the default interactive shell different from the default environment shell on a desktop system. I'm not sure what does the default interactive shell have to do here - properly-written shell scripts shouldn't depend on their environment (well - unless of course they are designed to be configured through the environment). That's why they should set their PATH etc (even just for security reasons)... I used to use tcsh as my interactive shell for over a decade, and it (and /bin/csh) used to be the default shell assigned to new users on many systems I worked on. --Amos = To unsubscribe, send mail to [EMAIL PROTECTED] with the word unsubscribe in the message body, e.g., run the command echo unsubscribe | mail [EMAIL PROTECTED]
Re: echo inside Makefile
Amos Shapira [EMAIL PROTECTED] writes: On 22/11/2007, Oleg Goldshmidt [EMAIL PROTECTED] wrote: what not that expect echo options, regular expressions, and other stuff ash/dash does not provide. Yes, I realize that it is technically careless. That's no excuse for keeping the default interactive shell different from the default environment shell on a desktop system. I'm not sure what does the default interactive shell have to do here - properly-written shell scripts shouldn't depend on their environment So we agree... ;-) I used to use tcsh as my interactive shell for over a decade, and it (and /bin/csh) used to be the default shell assigned to new users on many systems I worked on. But t?csh was *not* the default interactive shell on those systems. I don't think it ever was on any Linux (or maybe UNIX) system. The default was changed consciously from the installation by the administrators of those systems, for whatever reason. The user can change it to bash, ksh, zsh, whatever his soul desires. For reasons of portability that you mentioned yourself, the default SHELL used by many programs (e.g., make) is /bin/sh. That is what changed on Kfir's system, changed in a way that a user cannot override, and it turned out that as a result a utility so basic as echo did not implement any options (-n and -e are just about the only options echo has). I don't think it is expected of /bin/sh on a general-purpose system, frankly. You mentioned yourself that Kfir's makefile was autogenerated. It had /bin/sh, not bash, as its environment, and it still used echo -e -n. Now let's say Kfir is a normal user. He cannot change /bin/sh, he cannot change the Makefile, the only way out is to invoke whatever build procedure there is under an environment where SHELL=/bin/bash (*not* /bin/sh), and hope that a) the build procedure does not explicitly reset SHELL to /bin/sh somewhere, and b) that bash is indeed fully compatible with sh. I'd be hard pressed to conclude that the application is broken. By the way, FWIW bash is supposed to know when it is invoked as sh (see man bash for details). I just checked (on a Fedora system) that echo accepts options inside sh. I am not saying Debian did anything that was not within their rights. I think, however, that it is somewhat against the expectations of even an experienced UNIX/Linux user (and I gather that's not the exclusive audience of Ubuntu), and I wondered publicly what it might break. But there is a lesson here somewhere: a) don't use echo options in portable #!/bin/sh scripts; b) consider #!/bin/bash even for portable code (restricting it to systems with bash installed, of course). -- Oleg Goldshmidt | [EMAIL PROTECTED] | http://www.goldshmidt.org = To unsubscribe, send mail to [EMAIL PROTECTED] with the word unsubscribe in the message body, e.g., run the command echo unsubscribe | mail [EMAIL PROTECTED]
Re: echo inside Makefile
$ type -a echo echo is a shell builtin echo is /bin/echo $bash --version GNU bash, version 3.2.25(1)-release (i486-pc-linux-gnu) $/bin/echo --version echo (GNU coreutils) 5.97 On Nov 20, 2007 8:11 PM, Oleg Goldshmidt [EMAIL PROTECTED] wrote: Kfir Lavi [EMAIL PROTECTED] writes: Hi, I have a problem running echo inside Makefile. Here is the Makefile: all: @echo string @echo -e -n string The output is: string -e -n string The problem is the second @echo command. It prints '-e -n' instead of interpreting those options. I have tested it on other comps and it works fine, so its an environment problem in my comp. What var or file determine this behavior? What does type -a echo say in the same environment under which you run make? Your makefile works properly for me, FWIW, but I am on Fedora, not Ubuntu. -- Oleg Goldshmidt | [EMAIL PROTECTED] | http://www.goldshmidt.org To unsubscribe, send mail to [EMAIL PROTECTED] with the word unsubscribe in the message body, e.g., run the command echo unsubscribe | mail [EMAIL PROTECTED]
Re: echo inside Makefile
On Nov 21, 2007 1:33 AM, Amos Shapira [EMAIL PROTECTED] wrote: On 20/11/2007, Kfir Lavi [EMAIL PROTECTED] wrote: Ok, make -d don't show much. I have attached the two files: Makefile and make.log That's weird - your make.log says: Must remake target `all'. -e -n aaa (i.e. echo is missing). But running make -d -n on my machine (Debian Etch, make 3.81, bash 3.1.17, /bin/echo from GNU coreutils 5.97) I get: Must remake target `all'. echo -e -n aaa (i.e. echo is included). What was the exact command you executed to get make.log? make -d 21 | tee make.log Maybe add a space after the @? Nope, this doesn't help. I also see in bash's man that xpg_echo shell option will tell the built-in echo to expand backslash-escape sequences by default. It's off in my bash. By default this flag is 'off'. I have used 'shopt -s xpg_echo' to set it 'on'. This didn't solve the problem. Another piece of documentation - the coreutils info page about echo says: quote If the `POSIXLY_CORRECT' environment variable is set, then when `echo''s first argument is not `-n' it outputs option-like arguments instead of treating them as options. For example, `echo -ne hello' outputs `-ne hello' instead of plain `hello'. POSIX does not require support for any options, and says that the behavior of `echo' is implementation-defined if any STRING contains a backslash or if the first argument is `-n'. Portable programs can use the `printf' command if they need to omit trailing newlines or output control characters or backslashes. *Note printf invocation::. /quote Do you have POSIXLY_CORRECT envariable set? How about trying to switch the -e and -n in Makefile? POSIXLY_CORRECT doesn't help too: $ make aaa-e -n aaa $ POSIXLY_CORRECT=1 make -e -n aaa -e -n aaa Cheers, --Amos = To unsubscribe, send mail to [EMAIL PROTECTED] with the word unsubscribe in the message body, e.g., run the command echo unsubscribe | mail [EMAIL PROTECTED]
Re: echo inside Makefile
On Tuesday 20 November 2007, you wrote: Hi, I have a problem running echo inside Makefile. Here is the Makefile: all: @echo string @echo -e -n string The output is: string -e -n string The problem is the second @echo command. It prints '-e -n' instead of interpreting those options. I have tested it on other comps and it works fine, so its an environment problem in my comp. What var or file determine this behavior? The difference is your /bin/sh In Ubuntu it's linked to /bin/dash which echo (builtin command) accepts only -n linking /bin/sh to /bin/bash will bypass this behavior in *your* environment. A better solution will be to force make calling the echo you want: ECHO=/bin/echo all: @$(ECHO) -n -e aaa # Thanks, Kfir = To unsubscribe, send mail to [EMAIL PROTECTED] with the word unsubscribe in the message body, e.g., run the command echo unsubscribe | mail [EMAIL PROTECTED]
Re: echo inside Makefile
make SHELL=/bin/bash works. But, my shell seems to be bash. echo $SHELL /bin/bash So what is the problem? Do I really run dash instead of bash, but it shows bash? Thanks, Kfir On Nov 21, 2007 8:26 PM, Valery Reznic [EMAIL PROTECTED] wrote: --- Dotan Shavit [EMAIL PROTECTED] wrote: On Tuesday 20 November 2007, you wrote: Hi, I have a problem running echo inside Makefile. Here is the Makefile: all: @echo string @echo -e -n string The output is: string -e -n string The problem is the second @echo command. It prints '-e -n' instead of interpreting those options. I have tested it on other comps and it works fine, so its an environment problem in my comp. What var or file determine this behavior? The difference is your /bin/sh In Ubuntu it's linked to /bin/dash which echo (builtin command) accepts only -n linking /bin/sh to /bin/bash will bypass this behavior in *your* environment. make SHELL=/bin/bash should do the trick too. Valery. A better solution will be to force make calling the echo you want: ECHO=/bin/echo all: @$(ECHO) -n -e aaa # Thanks, Kfir = To unsubscribe, send mail to [EMAIL PROTECTED] with the word unsubscribe in the message body, e.g., run the command echo unsubscribe | mail [EMAIL PROTECTED] Get easy, one-click access to your favorites. Make Yahoo! your homepage. http://www.yahoo.com/r/hs
Re: echo inside Makefile
On Thursday 22 November 2007, Kfir Lavi wrote: make SHELL=/bin/bash works. But, my shell seems to be bash. echo $SHELL /bin/bash So what is the problem? Do I really run dash instead of bash, but it shows bash? Try: all: echo $(SHELL) # Thanks, Kfir On Nov 21, 2007 8:26 PM, Valery Reznic [EMAIL PROTECTED] wrote: --- Dotan Shavit [EMAIL PROTECTED] wrote: On Tuesday 20 November 2007, you wrote: Hi, I have a problem running echo inside Makefile. Here is the Makefile: all: @echo string @echo -e -n string The output is: string -e -n string The problem is the second @echo command. It prints '-e -n' instead of interpreting those options. I have tested it on other comps and it works fine, so its an environment problem in my comp. What var or file determine this behavior? The difference is your /bin/sh In Ubuntu it's linked to /bin/dash which echo (builtin command) accepts only -n linking /bin/sh to /bin/bash will bypass this behavior in *your* environment. make SHELL=/bin/bash should do the trick too. Valery. A better solution will be to force make calling the echo you want: ECHO=/bin/echo all: @$(ECHO) -n -e aaa # Thanks, Kfir = To unsubscribe, send mail to [EMAIL PROTECTED] with the word unsubscribe in the message body, e.g., run the command echo unsubscribe | mail [EMAIL PROTECTED] _ ___ Get easy, one-click access to your favorites. Make Yahoo! your homepage. http://www.yahoo.com/r/hs = To unsubscribe, send mail to [EMAIL PROTECTED] with the word unsubscribe in the message body, e.g., run the command echo unsubscribe | mail [EMAIL PROTECTED]
Re: echo inside Makefile
Yep, The thing is that make uses /bin/sh and /bin/sh - dash. Changing the link /bin/sh to point to bash solved the problem. Thanks all for your help. Kfir On Nov 22, 2007 9:54 AM, Dotan Shavit [EMAIL PROTECTED] wrote: On Thursday 22 November 2007, Kfir Lavi wrote: make SHELL=/bin/bash works. But, my shell seems to be bash. echo $SHELL /bin/bash So what is the problem? Do I really run dash instead of bash, but it shows bash? Try: all: echo $(SHELL) # Thanks, Kfir On Nov 21, 2007 8:26 PM, Valery Reznic [EMAIL PROTECTED] wrote: --- Dotan Shavit [EMAIL PROTECTED] wrote: On Tuesday 20 November 2007, you wrote: Hi, I have a problem running echo inside Makefile. Here is the Makefile: all: @echo string @echo -e -n string The output is: string -e -n string The problem is the second @echo command. It prints '-e -n' instead of interpreting those options. I have tested it on other comps and it works fine, so its an environment problem in my comp. What var or file determine this behavior? The difference is your /bin/sh In Ubuntu it's linked to /bin/dash which echo (builtin command) accepts only -n linking /bin/sh to /bin/bash will bypass this behavior in *your* environment. make SHELL=/bin/bash should do the trick too. Valery. A better solution will be to force make calling the echo you want: ECHO=/bin/echo all: @$(ECHO) -n -e aaa # Thanks, Kfir = To unsubscribe, send mail to [EMAIL PROTECTED] with the word unsubscribe in the message body, e.g., run the command echo unsubscribe | mail [EMAIL PROTECTED] _ ___ Get easy, one-click access to your favorites. Make Yahoo! your homepage. http://www.yahoo.com/r/hs
echo inside Makefile
Hi, I have a problem running echo inside Makefile. Here is the Makefile: all: @echo string @echo -e -n string The output is: string -e -n string The problem is the second @echo command. It prints '-e -n' instead of interpreting those options. I have tested it on other comps and it works fine, so its an environment problem in my comp. What var or file determine this behavior? Thanks, Kfir
Re: echo inside Makefile
On 20/11/2007, Kfir Lavi [EMAIL PROTECTED] wrote: Hi, I have a problem running echo inside Makefile. Here is the Makefile: all: @echo string @echo -e -n string The output is: string -e -n string The problem is the second @echo command. It prints '-e -n' instead of interpreting those options. I have tested it on other comps and it works fine, so its an environment problem in my comp. What var or file determine this behavior? It mostly depends on which shell is used. echo is a built-in command in many shells as well as there are stand-alone implementations (usually under /bin). And many of the different versions use different options. Do you use autoconf or do you write the Makefile directly? I'm pretty sure autoconf can interrogate the system and find the right combination of echo and flags for your needs (but I never got around to use it properly). --Amos = To unsubscribe, send mail to [EMAIL PROTECTED] with the word unsubscribe in the message body, e.g., run the command echo unsubscribe | mail [EMAIL PROTECTED]
Re: echo inside Makefile
I'm compiling embedded environment, and there is a Makefile in iproute2 an tc that have this line. I'm using bash as a shell, also the other comps I have used. I have read the echo entry in man bash, but didn't find nothing of importance. What I did found is that my echo version don't interpret any flags with --. echo --version --version I'm running Ubuntu 7.10 Kfir On Nov 20, 2007 1:22 PM, Valery Reznic [EMAIL PROTECTED] wrote: --- Amos Shapira [EMAIL PROTECTED] wrote: On 20/11/2007, Kfir Lavi [EMAIL PROTECTED] wrote: Hi, I have a problem running echo inside Makefile. Here is the Makefile: all: @echo string @echo -e -n string You could try to use printf instead of echo. Valery The output is: string -e -n string The problem is the second @echo command. It prints '-e -n' instead of interpreting those options. I have tested it on other comps and it works fine, so its an environment problem in my comp. What var or file determine this behavior? It mostly depends on which shell is used. echo is a built-in command in many shells as well as there are stand-alone implementations (usually under /bin). And many of the different versions use different options. Do you use autoconf or do you write the Makefile directly? I'm pretty sure autoconf can interrogate the system and find the right combination of echo and flags for your needs (but I never got around to use it properly). --Amos = To unsubscribe, send mail to [EMAIL PROTECTED] with the word unsubscribe in the message body, e.g., run the command echo unsubscribe | mail [EMAIL PROTECTED] Be a better sports nut! Let your teams follow you with Yahoo Mobile. Try it now. http://mobile.yahoo.com/sports;_ylt=At9_qDKvtAbMuh1G1SQtBI7ntAcJ = To unsubscribe, send mail to [EMAIL PROTECTED] with the word unsubscribe in the message body, e.g., run the command echo unsubscribe | mail [EMAIL PROTECTED]
Re: echo inside Makefile
--- Kfir Lavi [EMAIL PROTECTED] wrote: I'm compiling embedded environment, and there is a Makefile in iproute2 an tc that have this line. I'm using bash as a shell, also the other comps I have used. I have read the echo entry in man bash, but didn't find nothing of importance. What I did found is that my echo version don't interpret any flags with --. echo --version --version I'm running Ubuntu 7.10 May be your bash for some reason running not it's embedded echo, but external one . Anyway, what about printf, is it work for you ? Valery. Kfir On Nov 20, 2007 1:22 PM, Valery Reznic [EMAIL PROTECTED] wrote: --- Amos Shapira [EMAIL PROTECTED] wrote: On 20/11/2007, Kfir Lavi [EMAIL PROTECTED] wrote: Hi, I have a problem running echo inside Makefile. Here is the Makefile: all: @echo string @echo -e -n string You could try to use printf instead of echo. Valery The output is: string -e -n string The problem is the second @echo command. It prints '-e -n' instead of interpreting those options. I have tested it on other comps and it works fine, so its an environment problem in my comp. What var or file determine this behavior? It mostly depends on which shell is used. echo is a built-in command in many shells as well as there are stand-alone implementations (usually under /bin). And many of the different versions use different options. Do you use autoconf or do you write the Makefile directly? I'm pretty sure autoconf can interrogate the system and find the right combination of echo and flags for your needs (but I never got around to use it properly). --Amos = To unsubscribe, send mail to [EMAIL PROTECTED] with the word unsubscribe in the message body, e.g., run the command echo unsubscribe | mail [EMAIL PROTECTED] Be a better sports nut! Let your teams follow you with Yahoo Mobile. Try it now. http://mobile.yahoo.com/sports;_ylt=At9_qDKvtAbMuh1G1SQtBI7ntAcJ = To unsubscribe, send mail to [EMAIL PROTECTED] with the word unsubscribe in the message body, e.g., run the command echo unsubscribe | mail [EMAIL PROTECTED] Never miss a thing. Make Yahoo your home page. http://www.yahoo.com/r/hs = To unsubscribe, send mail to [EMAIL PROTECTED] with the word unsubscribe in the message body, e.g., run the command echo unsubscribe | mail [EMAIL PROTECTED]
Re: echo inside Makefile
Does make uses internal echo command? I ask this, because bash echo interprets -e -n and also /bin/echo. But when running echo inside the Makefile it will not interpret -e -n. On Nov 20, 2007 1:52 PM, Valery Reznic [EMAIL PROTECTED] wrote: --- Kfir Lavi [EMAIL PROTECTED] wrote: I'm compiling embedded environment, and there is a Makefile in iproute2 an tc that have this line. I'm using bash as a shell, also the other comps I have used. I have read the echo entry in man bash, but didn't find nothing of importance. What I did found is that my echo version don't interpret any flags with --. echo --version --version I'm running Ubuntu 7.10 May be your bash for some reason running not it's embedded echo, but external one . Anyway, what about printf, is it work for you ? Valery. Kfir On Nov 20, 2007 1:22 PM, Valery Reznic [EMAIL PROTECTED] wrote: --- Amos Shapira [EMAIL PROTECTED] wrote: On 20/11/2007, Kfir Lavi [EMAIL PROTECTED] wrote: Hi, I have a problem running echo inside Makefile. Here is the Makefile: all: @echo string @echo -e -n string You could try to use printf instead of echo. Valery The output is: string -e -n string The problem is the second @echo command. It prints '-e -n' instead of interpreting those options. I have tested it on other comps and it works fine, so its an environment problem in my comp. What var or file determine this behavior? It mostly depends on which shell is used. echo is a built-in command in many shells as well as there are stand-alone implementations (usually under /bin). And many of the different versions use different options. Do you use autoconf or do you write the Makefile directly? I'm pretty sure autoconf can interrogate the system and find the right combination of echo and flags for your needs (but I never got around to use it properly). --Amos = To unsubscribe, send mail to [EMAIL PROTECTED] with the word unsubscribe in the message body, e.g., run the command echo unsubscribe | mail [EMAIL PROTECTED] Be a better sports nut! Let your teams follow you with Yahoo Mobile. Try it now. http://mobile.yahoo.com/sports;_ylt=At9_qDKvtAbMuh1G1SQtBI7ntAcJ = To unsubscribe, send mail to [EMAIL PROTECTED] with the word unsubscribe in the message body, e.g., run the command echo unsubscribe | mail [EMAIL PROTECTED] Never miss a thing. Make Yahoo your home page. http://www.yahoo.com/r/hs
Re: echo inside Makefile
One more thing. I can change the Makefile to work, using: @/bin/echo -e -n aaa But I do not want to change the Makefile. I want to find the problem in my environment. On Nov 20, 2007 2:16 PM, Kfir Lavi [EMAIL PROTECTED] wrote: Does make uses internal echo command? I ask this, because bash echo interprets -e -n and also /bin/echo. But when running echo inside the Makefile it will not interpret -e -n. On Nov 20, 2007 1:52 PM, Valery Reznic [EMAIL PROTECTED] wrote: --- Kfir Lavi [EMAIL PROTECTED] wrote: I'm compiling embedded environment, and there is a Makefile in iproute2 an tc that have this line. I'm using bash as a shell, also the other comps I have used. I have read the echo entry in man bash, but didn't find nothing of importance. What I did found is that my echo version don't interpret any flags with --. echo --version --version I'm running Ubuntu 7.10 May be your bash for some reason running not it's embedded echo, but external one . Anyway, what about printf, is it work for you ? Valery. Kfir On Nov 20, 2007 1:22 PM, Valery Reznic [EMAIL PROTECTED] wrote: --- Amos Shapira [EMAIL PROTECTED] wrote: On 20/11/2007, Kfir Lavi [EMAIL PROTECTED] wrote: Hi, I have a problem running echo inside Makefile. Here is the Makefile: all: @echo string @echo -e -n string You could try to use printf instead of echo. Valery The output is: string -e -n string The problem is the second @echo command. It prints '-e -n' instead of interpreting those options. I have tested it on other comps and it works fine, so its an environment problem in my comp. What var or file determine this behavior? It mostly depends on which shell is used. echo is a built-in command in many shells as well as there are stand-alone implementations (usually under /bin). And many of the different versions use different options. Do you use autoconf or do you write the Makefile directly? I'm pretty sure autoconf can interrogate the system and find the right combination of echo and flags for your needs (but I never got around to use it properly). --Amos = To unsubscribe, send mail to [EMAIL PROTECTED] with the word unsubscribe in the message body, e.g., run the command echo unsubscribe | mail [EMAIL PROTECTED] Be a better sports nut! Let your teams follow you with Yahoo Mobile. Try it now. http://mobile.yahoo.com/sports;_ylt=At9_qDKvtAbMuh1G1SQtBI7ntAcJ = To unsubscribe, send mail to [EMAIL PROTECTED] with the word unsubscribe in the message body, e.g., run the command echo unsubscribe | mail [EMAIL PROTECTED] Never miss a thing. Make Yahoo your home page. http://www.yahoo.com/r/hs
Re: echo inside Makefile
You can run 'make -d' to get more insight into what Make does. There aren't supposed to be any internal Make commands. There are internal functions, but the syntax for calling them is $(function ...), e.g. $(info foobar) On Nov 20, 2007 2:16 PM, Kfir Lavi [EMAIL PROTECTED] wrote: Does make uses internal echo command? I ask this, because bash echo interprets -e -n and also /bin/echo. But when running echo inside the Makefile it will not interpret -e -n.
Re: echo inside Makefile
Kfir Lavi [EMAIL PROTECTED] writes: Hi, I have a problem running echo inside Makefile. Here is the Makefile: all: @echo string @echo -e -n string The output is: string -e -n string The problem is the second @echo command. It prints '-e -n' instead of interpreting those options. I have tested it on other comps and it works fine, so its an environment problem in my comp. What var or file determine this behavior? What does type -a echo say in the same environment under which you run make? Your makefile works properly for me, FWIW, but I am on Fedora, not Ubuntu. -- Oleg Goldshmidt | [EMAIL PROTECTED] | http://www.goldshmidt.org To unsubscribe, send mail to [EMAIL PROTECTED] with the word unsubscribe in the message body, e.g., run the command echo unsubscribe | mail [EMAIL PROTECTED]
Re: echo inside Makefile
Ok, make -d don't show much. I have attached the two files: Makefile and make.log On Nov 20, 2007 2:28 PM, Ilya Konstantinov [EMAIL PROTECTED] wrote: You can run 'make -d' to get more insight into what Make does. There aren't supposed to be any internal Make commands. There are internal functions, but the syntax for calling them is $(function ...), e.g. $(info foobar) On Nov 20, 2007 2:16 PM, Kfir Lavi [EMAIL PROTECTED] wrote: Does make uses internal echo command? I ask this, because bash echo interprets -e -n and also /bin/echo. But when running echo inside the Makefile it will not interpret -e -n. Makefile Description: Binary data GNU Make 3.81 Copyright (C) 2006 Free Software Foundation, Inc. This is free software; see the source for copying conditions. There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. This program built for i486-pc-linux-gnu Reading makefiles... Reading makefile `Makefile'... Updating makefiles Considering target file `Makefile'. Looking for an implicit rule for `Makefile'. Trying pattern rule with stem `Makefile'. Trying implicit prerequisite `Makefile.o'. Trying pattern rule with stem `Makefile'. Trying implicit prerequisite `Makefile.c'. Trying pattern rule with stem `Makefile'. Trying implicit prerequisite `Makefile.cc'. Trying pattern rule with stem `Makefile'. Trying implicit prerequisite `Makefile.C'. Trying pattern rule with stem `Makefile'. Trying implicit prerequisite `Makefile.cpp'. Trying pattern rule with stem `Makefile'. Trying implicit prerequisite `Makefile.p'. Trying pattern rule with stem `Makefile'. Trying implicit prerequisite `Makefile.f'. Trying pattern rule with stem `Makefile'. Trying implicit prerequisite `Makefile.F'. Trying pattern rule with stem `Makefile'. Trying implicit prerequisite `Makefile.r'. Trying pattern rule with stem `Makefile'. Trying implicit prerequisite `Makefile.s'. Trying pattern rule with stem `Makefile'. Trying implicit prerequisite `Makefile.S'. Trying pattern rule with stem `Makefile'. Trying implicit prerequisite `Makefile.mod'. Trying pattern rule with stem `Makefile'. Trying implicit prerequisite `Makefile.sh'. Trying pattern rule with stem `Makefile'. Trying implicit prerequisite `Makefile,v'. Trying pattern rule with stem `Makefile'. Trying implicit prerequisite `RCS/Makefile,v'. Trying pattern rule with stem `Makefile'. Trying implicit prerequisite `RCS/Makefile'. Trying pattern rule with stem `Makefile'. Trying implicit prerequisite `s.Makefile'. Trying pattern rule with stem `Makefile'. Trying implicit prerequisite `SCCS/s.Makefile'. Trying pattern rule with stem `Makefile'. Trying implicit prerequisite `Makefile.o'. Looking for a rule with intermediate file `Makefile.o'. Avoiding implicit rule recursion. Trying pattern rule with stem `Makefile'. Trying implicit prerequisite `Makefile.c'. Trying pattern rule with stem `Makefile'. Trying implicit prerequisite `Makefile.cc'. Trying pattern rule with stem `Makefile'. Trying implicit prerequisite `Makefile.C'. Trying pattern rule with stem `Makefile'. Trying implicit prerequisite `Makefile.cpp'. Trying pattern rule with stem `Makefile'. Trying implicit prerequisite `Makefile.p'. Trying pattern rule with stem `Makefile'. Trying implicit prerequisite `Makefile.f'. Trying pattern rule with stem `Makefile'. Trying implicit prerequisite `Makefile.F'. Trying pattern rule with stem `Makefile'. Trying implicit prerequisite `Makefile.r'. Trying pattern rule with stem `Makefile'. Trying implicit prerequisite `Makefile.s'. Trying pattern rule with stem `Makefile'. Trying implicit prerequisite `Makefile.S'. Trying pattern rule with stem `Makefile'. Trying implicit prerequisite `Makefile.mod'. Trying pattern rule with stem `Makefile.o'. Trying implicit prerequisite `Makefile.o,v'. Trying pattern rule with stem `Makefile.o'. Trying implicit prerequisite `RCS/Makefile.o,v'. Trying pattern rule with stem `Makefile.o'. Trying implicit prerequisite `RCS/Makefile.o'. Trying pattern rule with stem `Makefile.o'. Trying implicit prerequisite `s.Makefile.o'. Trying pattern rule with stem `Makefile.o'. Trying implicit prerequisite `SCCS/s.Makefile.o'. Trying pattern rule with stem `Makefile'. Trying implicit prerequisite `Makefile.c'. Looking for a rule with intermediate file `Makefile.c'. Avoiding implicit rule recursion. Avoiding implicit rule recursion. Trying pattern rule with stem `Makefile'. Trying implicit prerequisite `Makefile.y'. Trying pattern rule with stem `Makefile'. Trying implicit prerequisite `Makefile.l'. Trying pattern rule with stem `Makefile'. Trying implicit prerequisite `Makefile.w'. Trying pattern rule with stem `Makefile'. Trying implicit prerequisite `Makefile.w'. Trying pattern rule
Re: echo inside Makefile
On 20/11/2007, Kfir Lavi [EMAIL PROTECTED] wrote: Ok, make -d don't show much. I have attached the two files: Makefile and make.log That's weird - your make.log says: Must remake target `all'. -e -n aaa (i.e. echo is missing). But running make -d -n on my machine (Debian Etch, make 3.81, bash 3.1.17, /bin/echo from GNU coreutils 5.97) I get: Must remake target `all'. echo -e -n aaa (i.e. echo is included). What was the exact command you executed to get make.log? Maybe add a space after the @? I also see in bash's man that xpg_echo shell option will tell the built-in echo to expand backslash-escape sequences by default. It's off in my bash. Another piece of documentation - the coreutils info page about echo says: quote If the `POSIXLY_CORRECT' environment variable is set, then when `echo''s first argument is not `-n' it outputs option-like arguments instead of treating them as options. For example, `echo -ne hello' outputs `-ne hello' instead of plain `hello'. POSIX does not require support for any options, and says that the behavior of `echo' is implementation-defined if any STRING contains a backslash or if the first argument is `-n'. Portable programs can use the `printf' command if they need to omit trailing newlines or output control characters or backslashes. *Note printf invocation::. /quote Do you have POSIXLY_CORRECT envariable set? How about trying to switch the -e and -n in Makefile? Cheers, --Amos = To unsubscribe, send mail to [EMAIL PROTECTED] with the word unsubscribe in the message body, e.g., run the command echo unsubscribe | mail [EMAIL PROTECTED]
