Make
Warning
This integration is to be deprecated in Conan 2.0. Check the conan.tools.gnu Autotools integration.
Conan provides the Make generator to integrate with plain Makefiles
The make
generator outputs all the variables related to package dependencies
into a file which is named conanbuildinfo.mak. The make
toolchain outputs
all the variables related to settings, options, and platform into a file which
is named conan_toolchain.mak
.
To use the generator, indicate it in your conanfile
like this:
[generators]
make
class MyConan(ConanFile):
...
generators = "make"
Example
We are going to use the same example from Getting Started, a MD5 hash calculator app.
This is the main source file for it:
#include "Poco/MD5Engine.h"
#include "Poco/DigestStream.h"
#include <iostream>
int main(int argc, char** argv)
{
Poco::MD5Engine md5;
Poco::DigestOutputStream ds(md5);
ds << "abcdefghijklmnopqrstuvwxyz";
ds.close();
std::cout << Poco::DigestEngine::digestToHex(md5.digest()) << std::endl;
return 0;
}
In order to use this generator within your project, use the following Makefile as a reference:
#----------------------------------------
# Prepare flags from make generator
#----------------------------------------
include conanbuildinfo.mak
CFLAGS += $(CONAN_CFLAGS)
CXXFLAGS += $(CONAN_CXXFLAGS)
CPPFLAGS += $(addprefix -I, $(CONAN_INCLUDE_DIRS))
CPPFLAGS += $(addprefix -D, $(CONAN_DEFINES))
LDFLAGS += $(addprefix -L, $(CONAN_LIB_DIRS))
LDLIBS += $(addprefix -l, $(CONAN_LIBS))
EXELINKFLAGS += $(CONAN_EXELINKFLAGS)
#----------------------------------------
# Make variables for a sample App
#----------------------------------------
SRCS = main.cpp
OBJS = main.o
EXE_FILENAME = main
#----------------------------------------
# Make Rules
#----------------------------------------
.PHONY : exe
exe : $(EXE_FILENAME)
$(EXE_FILENAME) : $(OBJS)
g++ $(OBJS) $(CXXFLAGS) $(LDFLAGS) $(LDLIBS) -o $(EXE_FILENAME)
%.o : $(SRCS)
g++ -c $(CPPFLAGS) $(CXXFLAGS) $< -o $@
Now we are going to let Conan retrieve the dependencies, generate the
dependency information in the file conanbuildinfo.mak
, and generate the
options and settings information in the file conan_toolchain.mak
:
$ conan install .
Then let’s call make to generate our project:
$ make exe
Now you can run your application with ./main
.
See also