This content originally appeared on DEV Community and was authored by Kinjal
While installing packages in linux, we come across the following commands many times.
$ make install
Let's understand this with a simple example.install is a command that was written for software installation, but it can do more than that. make install will do whatever instruction is defined in makefile.
This example uses a sample hello world C program.
#include <stdio.h>
int main() {
printf("Hello, World!");
}
Here is the directory structure of testapp which is created for this example.
$ ls testapp
installer.sh makefile testapp testapp.c testapp.conf
Let's take closer look at installer.sh
#!/bin/bash
ROOTDIR=${1:-/opt/testapp}
OWNER=${2:-testapp}
GROUP=${3:-testapp}
# Create bin and opt directories
install -v -m 755 -o $OWNER -g $GROUP -d $ROOTDIR/bin $ROOTDIR/etc
if [ "$?" -ne "0" ]; then
echo "Install: Failed to create directories."
exit 1
fi
# install binary
install -b -v -m 750 -o $OWNER -g $GROUP -s testapp $ROOTDIR/bin
if [ "$?" -ne "0" ]; then
echo "Install: Failed to install the binary"
exit 2
fi
# install configuration file
install -b -v -m 600 -o $OWNER -g $GROUP testapp.conf $ROOTDIR/etc
if [ "$?" -ne "0" ]; then
echo "Install: Failed to install the config file"
exit 3
fi
echo "installation completed.."
All the chown install ect commands are defined in installer.sh and insatller itself is wrapped up in makefile so that makefile can be kept clean.
Here is makefile
all: testapp.c
$(CC) -o testapp testapp.c
clean:
rm -f testapp
install: testapp
./installer.sh /opt/testapp kiwi kiwi
purge:
rm -rf /opt/testapp
And the content of sample conf file testapp.conf
$ cat testapp.conf
testapp=testapp
Finally, running it.
$ sudo make install
./installer.sh /opt/testapp kiwi kiwi
'testapp' -> '/opt/testapp/bin/testapp' (backup: '/opt/testapp/bin/testapp~')
'testapp.conf' -> '/opt/testapp/etc/testapp.conf' (backup: '/opt/testapp/etc/testapp.conf~')
installation completed..
testapp can be found in /opt directory if the installation is successful.
That's a very simple example. Here is one useful link for further reading.
Download the code here.
This content originally appeared on DEV Community and was authored by Kinjal
Kinjal | Sciencx (2021-09-01T13:56:49+00:00) Linux make install command. Retrieved from https://www.scien.cx/2021/09/01/linux-make-install-command/
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