I would like to force make on FreeBSD to execute the target I specify no matter if it's up to date or not. I know that it could be done with a -B flag in GNU make but I cannot find anything similar in the FreeBSD make manual page.

I'm trying to follow a guide to compile a program for Debian in FreeBSD. I have the following makefile: obj-m += kernelinfo.o all: make -C /lib/modules/$(shell uname -r)/build M=$(PWD) modules clean: make -C /lib/modules/$(shell uname -r)/build M=$(PWD) clean I'm confused as to how I would compile this on FreeBSD since I do not have a /lib/modules folder on the machine. I have installed all of the default headers on FreeBSD in the /usr/src/ directory but I can't find a modules folder. I'm guessing the Makefile needs to be translated for FreeBSD, though I am very new to Linux and so I have no idea. Any help is much appreciated.

I am very new to both FreeBSD and compiling code from source and would really appreciate any help. I am trying to compile [fastText](https://github.com/facebookresearch/fastText) from source. When I execute the make command it returns the following message: make don't know how to make CXXFLAGS. Stop Here are first few lines from Makefile(complete file is available on the fastText github repo mentioned above): CXX = c++ CXXFLAGS = -pthread -std=c++0x OBJS = args.o dictionary.o matrix.o vector.o model.o utils.o INCLUDES = -I. opt: CXXFLAGS += -O3 -funroll-loops opt: fasttext debug: CXXFLAGS += -g -O0 -fno-inline debug: fasttext FreeBSD version: 10.3 FreeBSD clang version: 3.4.1 gmake version: 4.1_2

I'm trying to use bmake to build OS161 on Mandriva. When I try to run bmake, I get the following error: bmake: no system rules (sys.mk) I get the same error, even when I run bmake -m /usr/local/share/mk/sys.mk I've checked, and the path I listed above exists, but regardless of what path I give it, even if I give it a garbage path, I get the same error. This happens no matter what directory I run bmake in, so it's definitely not an OS161 problem. Does anybody know how to fix this?

Unfortunately, in some old FreeBSD environments I can't use "gmake", so I need to write a Makefile which will work with FreeBSD make also. And the last problem I can't solve - use shell commands, for example, I need to get full path to Python executable: PYTHON := $(shell which python2.7 || which python) But FreeBSD make simply ignores this. test: echo == $(PYTHON) == Then I run make test: $ make test echo == == == == Can anyone help, please? **Update #1:** To those who can't read closely and accidentally downvotes the question: Whole test script: PYTHON != which python2.7 || which python test: $(PYTHON) -c 'print "hello world"' Run on FreeBSD: make /usr/bin/python -c 'print "hello world"' hello world Run on CentOS: make test_make:1: *** missing separator. Stop. And if I use command $(shell ...) it works on CentOS and doesn't work on FreeBSD. So, is there any solution without gmake? **Update #2:** Eventually I found solution (put command in backticks): PYTHON ?= which python2.7 || which python I don't know why it prints itself: make which python2.7 || which python -c 'print "hello world"' hello world But it works! You can use it, guys :)

I'd like to use the shell assignment operator (i.e., !=) in a makefile that is going to be executed on FreeBSD, macOS, and Linux. Here's an example:

a!= seq 3

.PHONY: all
all: $a

.PHONY: $a
$a:
	@echo $@

Here's the expected output:

$ touch 1 2 3
$ make all
1
2
3

Unfortunately, the shell assignment operator is not supported by the GNU Make shipped with macOS Monterey 12.6.1 and the output of the example is empty. It works in more recent versions of GNU Make though (e.g., 4.4), which are likely to be encountered in recent Linux distributions. What should I do if I want this makefile to work with any version of GNU make and bmake?