28 The Makefile builds the hello executable if any one of main.cpp, hello.cpp, factorial.cpp changed. The smallest possible Makefile to achieve that specification could have been: hello: main.cpp hello.cpp factorial.cpp g++ -o hello main.cpp hello.cpp factorial.cpp pro: very easy to read con: maintenance nightmare, duplication of the C++ ...

Feb 2, 2011 · For variable assignment in Make, I see := and = operator. What's the difference between them?

Dec 19, 2023 · KDIR ?= $(shell uname -r) What is the meaning of ?=? I have understood the difference between :=, += and = from another thread available in Stack Overflow, but unable ...

Lazy Set VARIABLE = value Normal setting of a variable, but any other variables mentioned with the value field are recursively expanded with their value at the point at which the variable is used, not the one it had when it was declared Immediate Set VARIABLE := value Setting of a variable with simple expansion of the values inside - values within it are expanded at declaration time. …

Dec 22, 2011 · What does the following do in a Makefile? rule: $(deps) @: I can't seem to find this in the make manual.

Dec 23, 2016 · A makefile is processed sequentially, line by line. Variable assignments are "internalized", and include statements cause the contents of other files to be inserted literally at that location after which that content is processed as part of the makefile.

Mar 28, 2010 · Makefile.am is a programmer-defined file and is used by automake to generate the Makefile.in file (the .am stands for a uto m ake). The configure script typically seen in source tarballs will use the Makefile.in to generate a Makefile. The configure script itself is generated from a programmer-defined file named either configure.ac or configure.in (deprecated). I prefer .ac …

Well, if you know how to write a makefile, then you know where to put your compiler options... -shared is a linker option, so I'd add it to LDFLAGS. Edit Whoops, you don't have LDFLAGS. I recommend creating that variable and adding it to the link command.

I'm trying to setup a Makefile that will search and copy some files (if-else condition) and I can't figure out what exactly is wrong with it? (thou I'm pretty sure it's because a combination of spa...

Feb 27, 2013 · I want to add the shared library path to my Makefile. I have put in the export command in the makefile, it even gets called, but I still have to manually export it again. What is the correct appro...