How to write a backslash character in makefile for pythonanywhere - makefile

Question

I need to concatenate a String in makefile to get this output:
username\$databasename
for automating the build process for a django project.
I've figured out that the $ sign has to be $$ in makefile so this is what i have now:
MYVAR = username$$databasename
My problem is the backslash in the string! As I know, the \\ like usually the backslash is escaped does not work here because it is meant for the linebreak function of Makefiles.

Answer 1

You'll probably want to try myvar = username\\"$$"databasename.
With
rule :
#echo $(myvar)
This outputs username\$databasename.
If you think the double quotes are ugly, single quotes work just as fine: myvar = username\\'$$'databasename.
If databasename is stored in an environment variable you want to access then use:
myvar = username\\$$"$$databasename"
for example, myvar = username\\$$"$$USER" would output username\$guiltydolphin for me.

Answer 2

In a Makefile I sometimes want to include scripts or fragments of python
code in a say Latex document.
I define BACKSLASH as Makefile macro and then use it in echo statements.
BACKSLASH = '\\'
reactance_sim: reactance.py
echo "{"$(BACKSLASH)tiny > reactance_sim
echo $(BACKSLASH)"begin{verbatim}" >> reactance_sim
cat reactance.py >> reactance_sim
echo $(BACKSLASH)"end{verbatim}" >> reactance_sim
echo "}" >> reactance_sim
cp reactance_sim reactance_simulation.tex
# vi reactance_simulation.tex
The above Makefile code will take the reactance.py file and
if required create a reactance_sim file which will have
backslashes in it (in this case Latex commands like \tiny and \begin)