How to use source in my makefile while keep my previous makefile content-CodePudding

I am writing an makefile and I need to set up env.

I use source /opt/intel/oneapi/setvars.sh to set up my env but I want to make it in my Makefile.

I search for how to use source in Makefile and I learn to write this:

SHELL=/bin/bash
s:
    source /opt/intel/oneapi/setvars.sh
CC = mpicc
OPT = -Ofast
CFLAGS = -Wall -std=c99 $(OPT) -fopenmp -march=native
LDFLAGS = -Wall -fopenmp
LDLIBS = $(LDFLAGS)

targets = benchmark-naive benchmark-omp benchmark-mpi
objects = check.o benchmark.o stencil-naive.o stencil-omp.o stencil-mpi.o

.PHONY : default
default : all

.PHONY : all
all : clean $(targets)

benchmark-naive : check.o benchmark.o stencil-naive.o
    $(CC) -o $@ $^ $(LDLIBS)

benchmark-omp : check.o benchmark.o stencil-omp.o
    $(CC) -o $@ $^ $(LDLIBS)

benchmark-mpi : check.o benchmark.o stencil-mpi.o
    $(CC) -o $@ $^ $(LDLIBS)

%.o : %.c common.h
    $(CC) -c $(CFLAGS) $< -o $@

.PHONY: clean
clean:
    rm -rf $(targets) $(objects)

But after run make it just load my env and do nothing. Can anyone help me to put my source in my makefile while keep my previous makefile content?

CodePudding user response：

You have to call make with the env set recursively if it wasn't set:

ifndef <some test to see if env is missing>
%:
     source /opt/intel/oneapi/setvars.sh $(MAKE) $(MAKECMDGOALS)
else
<normal makefile>
endif

CodePudding user response：

You can look at the following makefile:

# makefile
all: prog

prog:
    export ASD=asd
    echo $$ASD
    export ASD=asd; echo $$ASD

The output is:

export ASD=asd
echo $ASD

export ASD=asd; echo $ASD
asd

A makefile is not a bash script. 'make' is processing a makefile and it creates a child process for each line to run a shell to execute the statements. The variable that you set in a line is only valid for that child process, it will not be inherited back to the parent or to subsequent child processes.

I know this does not solve your issue, but at least it is some kind of an explanation why it does not work.

CodePudding user response：

Can you try this :

SHELL=/bin/bash --rcfile /opt/intel/oneapi/setvars.sh