How to get current relative directory of your Makefile?
MakefileGnu MakeWorking DirectoryMakefile Problem Overview
I have a several Makefiles in app specific directories like this:
/project1/apps/app_typeA/Makefile
/project1/apps/app_typeB/Makefile
/project1/apps/app_typeC/Makefile
Each Makefile includes a .inc file in this path one level up:
/project1/apps/app_rules.inc
Inside app_rules.inc I'm setting the destination of where I want the binaries to be placed when built. I want all binaries to be in their respective app_type
path:
/project1/bin/app_typeA/
I tried using $(CURDIR)
, like this:
OUTPUT_PATH = /project1/bin/$(CURDIR)
but instead I got the binaries buried in the entire path name like this: (notice the redundancy)
/project1/bin/projects/users/bob/project1/apps/app_typeA
What can I do to get the "current directory" of execution so that I can know just the app_typeX
in order to put the binaries in their respective types folder?
Makefile Solutions
Solution 1 - Makefile
The shell function.
You can use shell
function: current_dir = $(shell pwd)
.
Or shell
in combination with notdir
, if you need not absolute path:
current_dir = $(notdir $(shell pwd))
.
Given solution only works when you are running Update.
make
from the Makefile's current directory.As @Flimm noted:
> Note that this returns the current working directory, not the parent directory of the Makefile.
For example, if you run cd /; make -f /home/username/project/Makefile
, the current_dir
variable will be /
, not /home/username/project/
.
Code below will work for Makefiles invoked from any directory:
mkfile_path := $(abspath $(lastword $(MAKEFILE_LIST)))
current_dir := $(notdir $(patsubst %/,%,$(dir $(mkfile_path))))
Solution 2 - Makefile
As taken from here;
ROOT_DIR:=$(shell dirname $(realpath $(firstword $(MAKEFILE_LIST))))
Shows up as;
$ cd /home/user/
$ make -f test/Makefile
/home/user/test
$ cd test; make Makefile
/home/user/test
Hope this helps
Solution 3 - Makefile
If you are using GNU make, $(CURDIR) is actually a built-in variable. It is the location where the Makefile resides the current working directory, which is probably where the Makefile is, but not always.
OUTPUT_PATH = /project1/bin/$(notdir $(CURDIR))
See Appendix A Quick Reference in http://www.gnu.org/software/make/manual/make.html
Solution 4 - Makefile
THIS_DIR := $(dir $(abspath $(firstword $(MAKEFILE_LIST))))
Solution 5 - Makefile
I like the chosen answer, but I think it would be more helpful to actually show it working than explain it.
/tmp/makefile_path_test.sh
#!/bin/bash -eu
# Create a testing dir
temp_dir=/tmp/makefile_path_test
proj_dir=$temp_dir/dir1/dir2/dir3
mkdir -p $proj_dir
# Create the Makefile in $proj_dir
# (Because of this, $proj_dir is what $(path) should evaluate to.)
cat > $proj_dir/Makefile <<'EOF'
path := $(patsubst %/,%,$(dir $(abspath $(lastword $(MAKEFILE_LIST)))))
cwd := $(shell pwd)
all:
@echo "MAKEFILE_LIST: $(MAKEFILE_LIST)"
@echo " path: $(path)"
@echo " cwd: $(cwd)"
@echo ""
EOF
# See/debug each command
set -x
# Test using the Makefile in the current directory
cd $proj_dir
make
# Test passing a Makefile
cd $temp_dir
make -f $proj_dir/Makefile
# Cleanup
rm -rf $temp_dir
Output:
+ cd /tmp/makefile_path_test/dir1/dir2/dir3
+ make
MAKEFILE_LIST: Makefile
path: /private/tmp/makefile_path_test/dir1/dir2/dir3
cwd: /tmp/makefile_path_test/dir1/dir2/dir3
+ cd /tmp/makefile_path_test
+ make -f /tmp/makefile_path_test/dir1/dir2/dir3/Makefile
MAKEFILE_LIST: /tmp/makefile_path_test/dir1/dir2/dir3/Makefile
path: /tmp/makefile_path_test/dir1/dir2/dir3
cwd: /tmp/makefile_path_test
+ rm -rf /tmp/makefile_path_test
NOTE: The function $(patsubst %/,%,[path/goes/here/])
is used to strip the trailing slash.
Solution 6 - Makefile
I tried many of these answers, but on my AIX system with gnu make 3.80 I needed to do some things old school.
Turns out that lastword
, abspath
and realpath
were not added until 3.81. :(
mkfile_path := $(word $(words $(MAKEFILE_LIST)),$(MAKEFILE_LIST))
mkfile_dir:=$(shell cd $(shell dirname $(mkfile_path)); pwd)
current_dir:=$(notdir $(mkfile_dir))
As others have said, not the most elegant as it invokes a shell twice, and it still has the spaces issues.
But as I don't have any spaces in my paths, it works for me regardless of how I started make
:
- make -f ../wherever/makefile
- make -C ../wherever
- make -C ~/wherever
- cd ../wherever; make
All give me wherever
for current_dir
and the absolute path to wherever
for mkfile_dir
.
Solution 7 - Makefile
Here is one-liner to get absolute path to your Makefile
file using shell syntax:
SHELL := /bin/bash
CWD := $(shell cd -P -- '$(shell dirname -- "$0")' && pwd -P)
And here is version without shell based on @0xff answer:
CWD := $(abspath $(patsubst %/,%,$(dir $(abspath $(lastword $(MAKEFILE_LIST))))))
Test it by printing it, like:
cwd:
@echo $(CWD)
Solution 8 - Makefile
Example for your reference, as below:
The folder structure might be as:
Where there are two Makefiles, each as below;
sample/Makefile
test/Makefile
Now, let us see the content of the Makefiles.
> sample/Makefile
export ROOT_DIR=${PWD}
all:
echo ${ROOT_DIR}
$(MAKE) -C test
> test/Makefile
all:
echo ${ROOT_DIR}
echo "make test ends here !"
Now, execute the sample/Makefile, as;
cd sample
make
> OUTPUT:
echo /home/symphony/sample
/home/symphony/sample
make -C test
make[1]: Entering directory `/home/symphony/sample/test'
echo /home/symphony/sample
/home/symphony/sample
echo "make test ends here !"
make test ends here !
make[1]: Leaving directory `/home/symphony/sample/test'
Explanation, would be that the parent/home directory can be stored in the environment-flag, and can be exported, so that it can be used in all the sub-directory makefiles.
Solution 9 - Makefile
As far as I'm aware this is the only answer here that works correctly with spaces:
space:=
space+=
CURRENT_PATH := $(subst $(lastword $(notdir $(MAKEFILE_LIST))),,$(subst $(space),\$(space),$(shell realpath '$(strip $(MAKEFILE_LIST))')))
It essentially works by escaping space characters by substituting ' '
for '\ '
which allows Make to parse it correctly, and then it removes the filename of the makefile in MAKEFILE_LIST
by doing another substitution so you're left with the directory that makefile is in. Not exactly the most compact thing in the world but it does work.
You'll end up with something like this where all the spaces are escaped:
$(info CURRENT_PATH = $(CURRENT_PATH))
CURRENT_PATH = /mnt/c/Users/foobar/gDrive/P\ roje\ cts/we\ b/sitecompiler/
Solution 10 - Makefile
Solution found here : https://sourceforge.net/p/ipt-netflow/bugs-requests-patches/53/
The solution is : $(CURDIR)
You can use it like that :
CUR_DIR = $(CURDIR)
## Start :
start:
cd $(CUR_DIR)/path_to_folder
Solution 11 - Makefile
update 2018/03/05 finnaly I use this:
shellPath=`echo $PWD/``echo ${0%/*}`
# process absolute path
shellPath1=`echo $PWD/`
shellPath2=`echo ${0%/*}`
if [ ${shellPath2:0:1} == '/' ] ; then
shellPath=${shellPath2}
fi
It can be executed correct in relative path or absolute path. Executed correct invoked by crontab. Executed correct in other shell.
show example, a.sh print self path.
[root@izbp1a7wyzv7b5hitowq2yz /]# more /root/test/a.sh
shellPath=`echo $PWD/``echo ${0%/*}`
# process absolute path
shellPath1=`echo $PWD/`
shellPath2=`echo ${0%/*}`
if [ ${shellPath2:0:1} == '/' ] ; then
shellPath=${shellPath2}
fi
echo $shellPath
[root@izbp1a7wyzv7b5hitowq2yz /]# more /root/b.sh
shellPath=`echo $PWD/``echo ${0%/*}`
# process absolute path
shellPath1=`echo $PWD/`
shellPath2=`echo ${0%/*}`
if [ ${shellPath2:0:1} == '/' ] ; then
shellPath=${shellPath2}
fi
$shellPath/test/a.sh
[root@izbp1a7wyzv7b5hitowq2yz /]# ~/b.sh
/root/test
[root@izbp1a7wyzv7b5hitowq2yz /]# /root/b.sh
/root/test
[root@izbp1a7wyzv7b5hitowq2yz /]# cd ~
[root@izbp1a7wyzv7b5hitowq2yz ~]# ./b.sh
/root/./test
[root@izbp1a7wyzv7b5hitowq2yz ~]# test/a.sh
/root/test
[root@izbp1a7wyzv7b5hitowq2yz ~]# cd test
[root@izbp1a7wyzv7b5hitowq2yz test]# ./a.sh
/root/test/.
[root@izbp1a7wyzv7b5hitowq2yz test]# cd /
[root@izbp1a7wyzv7b5hitowq2yz /]# /root/test/a.sh
/root/test
[root@izbp1a7wyzv7b5hitowq2yz /]#
old: I use this:
MAKEFILE_PATH := $(PWD)/$({0%/*})
It can show correct if executed in other shell and other directory.
Solution 12 - Makefile
One line in the Makefile should be enough:
DIR := $(notdir $(CURDIR))