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gccmakedep - Online in the Cloud

Run gccmakedep in OnWorks free hosting provider over Ubuntu Online, Fedora Online, Windows online emulator or MAC OS online emulator

This is the command gccmakedep that can be run in the OnWorks free hosting provider using one of our multiple free online workstations such as Ubuntu Online, Fedora Online, Windows online emulator or MAC OS online emulator

PROGRAM:

NAME


gccmakedep - create dependencies in makefiles using 'gcc -M'

SYNOPSIS


gccmakedep [ -sseparator ] [ -fmakefile ] [ -a ] [ -- options -- ] sourcefile ...

DESCRIPTION


The gccmakedep program calls 'gcc -M' to output makefile rules describing the dependencies
of each sourcefile, so that make(1) knows which object files must be recompiled when a
dependency has changed.

By default, gccmakedep places its output in the file named makefile if it exists,
otherwise Makefile. An alternate makefile may be specified with the -f option. It first
searches the makefile for a line beginning with

# DO NOT DELETE

or one provided with the -s option, as a delimiter for the dependency output. If it finds
it, it will delete everything following this up to the end of the makefile and put the
output after this line. If it doesn't find it, the program will append the string to the
makefile and place the output after that.

EXAMPLE


Normally, gccmakedep will be used in a makefile target so that typing 'make depend' will
bring the dependencies up to date for the makefile. For example,
SRCS = file1.c file2.c ...
CFLAGS = -O -DHACK -I../foobar -xyz
depend:
gccmakedep -- $(CFLAGS) -- $(SRCS)

OPTIONS


The program will ignore any option that it does not understand, so you may use the same
arguments that you would for gcc(1), including -D and -U options to define and undefine
symbols and -I to set the include path.

-a Append the dependencies to the file instead of replacing existing dependencies.

-fmakefile
Filename. This allows you to specify an alternate makefile in which gccmakedep can
place its output. Specifying “-” as the file name (that is, -f-) sends the output
to standard output instead of modifying an existing file.

-sstring
Starting string delimiter. This option permits you to specify a different string
for gccmakedep to look for in the makefile. The default is “# DO NOT DELETE”.

-- options --
If gccmakedep encounters a double hyphen (--) in the argument list, then any
unrecognized arguments following it will be silently ignored. A second double
hyphen terminates this special treatment. In this way, gccmakedep can be made to
safely ignore esoteric compiler arguments that might normally be found in a CFLAGS
make macro (see the EXAMPLE section above). -D, -I, and -U options appearing
between the pair of double hyphens are still processed normally.

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