Programming :: Exporting Makefile Variables To $(shell) Environment?
May 12, 2010
I'm aware that one can export make variables to other makefiles; however, how does one export them to the environment of $(shell)? Take the example below:
Code:
export TEST
VARIABLE=$(shell echo $$TEST)
.PHONY: all
all:
#$(VARIABLE)
In this example, I might call make TEST=test. The goal is for $TEST to be available to the environment of the shell escape. This is because I need its value in a script which is called. For example:
Code:
VARIABLE=$(shell i-need-TEST.sh)My current solution is the following:VARIABLE=$(shell export TEST="$(TEST)"; i-need-TEST.sh) but this only works if I know all if the variables needed at that point (as opposed to being able to export variables in included makefiles.) Is there an easy solution?
I know many people have asked about environment variables before, but I am having a hard time dealing with these paths while ensuring I don't mess around with the original settings. How would you go about executing these commands in Ubuntu in terms of environment variables?
put /home/stanley/Downloads/ns-allinone-2.34/bin:/home/stanley/Downloads ns-allinone-2.34/tcl8.4.18/unix:/home/stanley/Downloads/ns-allinone-2.34/tk8.4.18/unixinto your PATH environment; so that you'll be able to run itm/tclsh wish/xgraph.
IMPORTANT NOTICES:
(1) You MUST put /home/stanley/Downloads/ns-allinone-2.34/otcl-1.13, /home/stanley/Downloads/ns-allinone-2.34/lib, into your LD_LIBRARY_PATH environment variable.
I have sles 10 . A user has a default shell of tcsh. I want to run a script which has to use ksh . In that script only some variables are exported, which will be used in subsequent scripts which are called inside it.
But the variables are not exported. I am unable to find whether its a conflict of shell or what ?? I tried with debug mode, it only displays the command but not execute anyone ..
I have been give a task of replicating one of our production systems to create a test system. I have been restricted to use c shell to set up its environment variables. I am new to this my questions is how do i set environment variables for a particular user on c shell e.g ORACLE_HOME and ORACLE_SID permanently for a particualar user i know in bash you edit the .bash_profile file. What do i do for c shell?
I'm trying to write a simple shell script, its purpose is not important. The script needs to make use of the system $HOSTNAME environment variable. I had a look at this page which provides the following example.
Code: #!/bin/sh echo "You are user $UID on $HOSTNAME" echo "Your home directory is: $HOME" echo "$HOSTNAME is running $OSTYPE"
I am aware this has probably been covered hundreds of times, so apologies if so. I am fairly new to the linux scripting scene, so again apologies if what I'm saying seems pretty odd and makes no sense. I am attempting to write a script for some Linux Fedora test servers I have set up. For me to change which domain I have this set to point to, I would have previously changed the HOSTS and profile files manually, however I managed to make a script which changes these easily with the use of one command to launch the script.The problem I'm having is getting it to use the "export" command. I am aware this would have to be launched in the parent shell rather than the child and so I made a seperate script which has "export SIP_DOMAIN="test.blah.net" in it and had the first script "source" it. This doesn't work and I've probably done something somewhere that is incredibly stupid.
When I put a "test" target in my Makefile containing Code: @echo "CXX= $(CXX)" it tells me "CXX= g++". But I have nothing in the Makefile assigning any value to CXX, and as far as I can tell I have no CXX environment variable (no "CXX" appears when I run the shell command "env", and "echo $CXX" returns a blank line. So where's the g++ value coming from. Is this just built into Gnu Make, or is there a configuration file for make somewhere?
How to use sudo to run a perl script with the environment variable JAVA_HOME on linux? Running testenv.pl as sudo do not pickup the environment variable JAVA_HOME value. code...
I'm running into a problem when I try to set a variable to an awk output in c-shell. Right now my command is Code: set STR_MSG_TYPE = `awk -F{ '/msg_type/ {print $2}' <filename> | tr -d }'/''*' ` I then run echo to see what the output is and it returns blank, however, when I run the same awk command from the command line, I get an actual output of "MT-715". Am I setting my variable incorrectly? I do something similar using the date command to set a STR_DATE variable earlier in the code and it works fine and I use the same syntax.
Somehow I'm not really managing this thing, which would d be a nice way to useariables.What I am doing is setting up compound variable in ksh. What I have is a "config" file, which has fields delimited by a semicolon
Code: cat ${CONFIGFILE} | grep -v "^#" | grep -v "^$" | while read line do
I am trying to modify a script for research purposes and am having difficulty here as I have little prior experience with C-shell scripting.
The script looks as follows (it includes tcl commands like runFEP that you can ignore)
#!/bin/bash
for ((old=1, new=2; old<=4; old++,new++)) a1=${old}%50 a2=${new}%50 do cat > input${new}.conf <<EOF ${a1} code....
My question: I keep getting a syntax error when defining my two variables a1 and a2. I essentially need these variables to be a1 = value of variable old divided by 50 a2 = value of variable new divided by 50
1. How to complement an environment variable to add data as we chain multiple Makefiles? 2. How to actually export variables from Makefiles so that they are available in other Makefiles?
I want to gave much details as possible. working directory (~/a1/shell) in the shell directory i have Makefile. also in the shell directory i have subdirectory's (obj, src, include)
My current Makefile
Quote:
#What needs to be built to make all files and dependencies
clean:
# End of Makefile
I wanted it so: all .o files are created in the obj subdirectory, and my application, sshell, is created in the shell directory.
I am getting this error when i run the make run: No rule to make target 'shell.h', needed by 'shutil.o'. stop
I'm trying to compile Ardour on jessie amd64 using the Debian source code (there's already an ardour package but I want to use different compile options). I've applied the Debian patches and have all the required dependencies installed.
Scons quits with a KeyError message from python2.7 saying that os.environ['DEB_HOST_ARCH_OS'] is not defined.
Checking with 'dpkg-archtecture -l' shows that DEB_HOST_ARCH_OS=linux, but 'print os.environ["DEB_HOST_ARCH_OS"]' in python says that name 'os' is not defined. The scons script has 'import os' at the top so it should be seeing it.
How do I make this visible to python (I'm assuming this problem is specific to the jessie python2.7 installation and not python in general)?
How do I edit my .bash_profile so recursive directories are on my path without manually typing all the directories? For example, I want to have /home/woodenbox/SU, /home/woodenbox/SU/bin, /home/woodenbox/SU/bin/src, etc on my path without actually having to write the paths for all the subdirectories
I am running Red Hat Linux Enterprise 5; I am always using the export command to set environment variables.Are there any other ways to set environment variables and what are the advantages/disadvantages of them?
he $g09root is picked up ( in both the csh and the bash), but not the $GV_DIR or the $GAUSS_SCRDIR. I guess it's some stupid error, but it is highly frustrating.Here is the .profile file:Quote:
# To make use of this feature, simply uncomment one of the lines below or # add your own one (see /usr/share/locale/locale.alias for more codes) #
I have installed jdk in my pc, and i've set up the environment variable on the .bashrc file in my home directory although i can use java's compiler and interpreter in terminal (xfce) if i try to use these commands in konsole (kde) for some reason they don't work. do i need to edit other file?
Nevermind, i found out that konsole was being executed with -e $SHELL -l parameters, once i took them out, and just ran konsole everything worked.
I've added an export command to /etc/profile, but the environment variables don't show up when not using a terminal.
For example: when I add:
Code:
To my /etc/profile (then open a new terminal so it registers) and run a graphical program from that terminal, the graphical program can see see the environment variable A.
However if I add the export command to my /etc/profile, then reboot so everything registers, then run that same graphical program from a menu (such as Applications->Accessories->Myprogram), it can't see the environment variable.
What I'm trying to say is basically, my environment variables only show up if I run a program in a shell. Is there a way to set environment variables that will show even without a shell?
I installed debian 8 on a usb drive using this guide. I used a debian 8.2 64-bit image with mate. It has all worked as I wanted it to. However recently I needed to change the PATH variable, and create another environment variable. I have not been able to do neither. What I have tryed (from google):
1. adding "export PATH=$PATH:/xxxx/" to etc/profile or to /home/user/.profile 2. adding ":/xxxx/" to a point in /etc/profile where the PATH variable is set 3. creating a script in /etc/profile.d which run "export PATH=$PATH:/xxxx/"
I'm newbie on Debian, and I just installed Debian 8.2. (I used to run openSuse, and I see Debian is quite different.)
Where should I set environment variables (like PATH or JAVA_HOME) in order to affect all users?
I read some documentation about that, but It is not clear for me, the difference among "/etc/environment", "/etc/bash.bashrc" and "/etc/profile".
(In openSuse, I used to create a file "/etc/bash.bashrc.local" and set the environment variables there, in order these settings are not lost with updates.)
I've never done much scripting myself and I'm quite unused to the bash as well, but anyway, Here's my problem.
I've a script which is supposed to set some environment variables, using export. However, if I check those variables using echo, they appear not to be set (they are empty). If I set the same variables manually, everything is fine, of course, but I don't want to set them each time manually.
