i'm recompiling some c++ code for OSX and there are some bugs as the configure is not picking up some libs like atlas, pastix, etc, it should be finding either in standard path or with pkgconfig but it's not so i'm rewriting the Makefile. C++ territory is a bit of a stretch with all of the preprocessing that needs to be done then linked.
i usually use rules to keep makefiles simple but i don't know if I'll break something with my bash inside the makefile?
there are 2 binaries and a static lib as a result, each has different flags with some common source elements so the object files are renamed so they are aren't overwritten.
someone else has a better way to do this?
anyway there are a LOT of lines in the file like this which i'd like to safely reduce to rules
------------as is --------
---------- will this work ? --------
maybe it is just easier to dump the object files for each into a separate director and then use implicit rules?
---------- Post updated 01-23-16 at 02:31 AM ---------- Previous update was 01-22-16 at 06:29 PM ----------
FYI, it was just easier to dump the object files into separate directories and compile.
whoever thought libtool/autoconf is a good thing? i turned about 6000 lines of bloated code into about 200. compiles libraries in 1/3 the time.
Last edited by f77hack; 01-22-2016 at 07:40 PM..
Reason: typos+++
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LEARN ABOUT CENTOS
gccmakedep
gccmakedep(1) General Commands Manual gccmakedep(1)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 speci-
fied 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 make-
file. 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.
SEE ALSO gcc(1), make(1), makedepend(1).
AUTHOR
The version of the gccmakedep included in this X.Org Foundation release was originally written by the XFree86 Project based on code sup-
plied by Hongjiu Lu.
Colin Watson wrote this manual page, originally for the Debian Project, based partly on the manual page for makedepend(1).
X Version 11 gccmakedep 1.0.2 gccmakedep(1)