Make

Compile C / C++ / Fortran source files using the compiler configured by your R Makeconf file.

make(target = "all", makefile = r_makeconf_path())

make_call(cmd = "$(CC)", args = "--version")

make_echo(cmd = "$(CC)")

make_info()

Arguments

target: name of output file that you want to make
makefile: path to the Makefile. Defaults to the Makeconf which R uses when building R packages.
cmd: command to invoke (may be a variable)
args: additional arguments for cmd

Details

The make function literally calls make yourfile.o -f /path/to/R/Makeconf. This is exactly what R does when building packages and hence the best way to test if the compiler is working.

Examples

# Test the CXX compiler
if(cxx_info()$available){
testprog <- '#include <iostream>\nint main() {std::cout << "Hello World!";}'
writeLines(testprog, con = 'testprog.cc')
make('testprog')

# Test and cleanup
system('./testprog')
unlink('testprog*', recursive = TRUE)
}
#> g++ -std=gnu++17 -g -O2  -I/usr/local/include -L/usr/local/lib  testprog.cc   -o testprog

# Run a program from a make variable
make_call('$(CXX)', '--version')
#> $status
#> [1] 0
#> 
#> $stdout
#>   [1] 67 2b 2b 20 28 55 62 75 6e 74 75 20 31 31 2e 34 2e 30 2d 31 75 62 75 6e 74
#>  [26] 75 31 7e 32 32 2e 30 34 29 20 31 31 2e 34 2e 30 0a 43 6f 70 79 72 69 67 68
#>  [51] 74 20 28 43 29 20 32 30 32 31 20 46 72 65 65 20 53 6f 66 74 77 61 72 65 20
#>  [76] 46 6f 75 6e 64 61 74 69 6f 6e 2c 20 49 6e 63 2e 0a 54 68 69 73 20 69 73 20
#> [101] 66 72 65 65 20 73 6f 66 74 77 61 72 65 3b 20 73 65 65 20 74 68 65 20 73 6f
#> [126] 75 72 63 65 20 66 6f 72 20 63 6f 70 79 69 6e 67 20 63 6f 6e 64 69 74 69 6f
#> [151] 6e 73 2e 20 20 54 68 65 72 65 20 69 73 20 4e 4f 0a 77 61 72 72 61 6e 74 79
#> [176] 3b 20 6e 6f 74 20 65 76 65 6e 20 66 6f 72 20 4d 45 52 43 48 41 4e 54 41 42
#> [201] 49 4c 49 54 59 20 6f 72 20 46 49 54 4e 45 53 53 20 46 4f 52 20 41 20 50 41
#> [226] 52 54 49 43 55 4c 41 52 20 50 55 52 50 4f 53 45 2e 0a 0a
#> 
#> $stderr
#> raw(0)
#> 

# Where your makeconf is stored:
make_info()
#> $name
#> [1] "make"
#> 
#> $available
#> [1] TRUE
#> 
#> $path
#> [1] "/usr/bin/make"
#> 
#> $version
#> [1] "GNU Make 4.3"
#> 
#> $makeconf
#> [1] "/opt/R/4.4.1/lib/R/etc/Makeconf"
#>

Arguments

Details

See also

Examples