Implicit Variables

$@

Target filename

$<

First prerequesite

$^

All prerequesites

Explicit Variables

Paths to programs

CC

C compiler, usually "cc" (see cc(1))

CXX

C++ compiler, usually "c++"

AR

ar(1), usually "ar"

YACC

yacc(1), usually "yacc"

LD

ld(1), linker, usually "ld"

MAKE

make(1) program, usually "make"

TEX

path to tex(1)

RM

rm(1) command, usually "rm -f"

LEX

path to lex(1)

Arguments to programs

CFLAGS

flags passed to the C compiler. for example: "-g -Wall"

LDLIBS

Libraries to link to, for example: "-ldl"

LDFLAGS

flags passed to the linker

ARFLAGS

flags passed to ar(1)

C_INCLUDE_PATH

directories to add to the include path. (for c header files)

CPLUS_INCLUDE_PATH

directories to add to the include path. (for c++ header files)

LD_LIBRARY_PATH

directories to add to the link path.

Note : To specify multiple directories in a search path use a colon separated list : DIR1:DIR2:DIR3