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How does one find the targets that a particular Makefile exposes


How does one find the targets that a particular Makefile exposes

By : user2950048
Date : November 17 2020, 11:52 AM
this one helps. As a general statement, no.
If there are meaningful variables the project should call them out specifically.
code :


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Makefile error No targets specified and no makefile found

Makefile error No targets specified and no makefile found


By : bplabombarda
Date : March 29 2020, 07:55 AM
wish helps you It seems to be you are messed up "a tab character for the (make) command line" with "tab character in make recipe command line, i.e. in Makefile itself". The first has no sense for make. The latter is required since the basic syntax of Makefile is the following:
code :
<target>: [ <dependency > ]*
   [ <TAB> <command> <endl> ]+
> make sandbox
all: sandbox
> make
Eclipse CDT generate makefile with makefile.init, makefile.defs, makefile.targets

Eclipse CDT generate makefile with makefile.init, makefile.defs, makefile.targets


By : user2344720
Date : March 29 2020, 07:55 AM
this will help The three includes are intended for your sake. If you need to compile something proprietary manually, or copy files or anything you can come up with before the main program is compiled, you create the file makefile.init in the source directory and put your makefile-stuff in here.
The same applies to the other files just at other times in the compile chain.
GNU Makefile - Generic Makefile for several targets

GNU Makefile - Generic Makefile for several targets


By : Hyun-Woo Yoon
Date : March 29 2020, 07:55 AM
this one helps. Here is the solution:
In the examples above I do not make Use of the $(LDLIBS) variable, which is used by the built-in default rule. If I change my Makefile to use $(LDLIBS) instead of $(LDFLAGS), everything is fine!
code :
CC=gcc
CFLAGS=-g -fopenmp
LDFLAGS= 
LDLIBS = -lstdc++ -lgomp
ECHO = echo
SILENT = @

MODULES = example1 example2 example3

all: $(MODULES)

clean:
    $(SILENT) $(ECHO) "--- Removing object files and binaries ---"
    $(SILENT) rm -f *.o 
    $(SILENT) rm -f $(MODULES)

.PHONY: clean
CC=gcc
CFLAGS=-g -fopenmp
LDFLAGS= 
LDLIBS = -lstdc++ -lgomp
ECHO = echo
SILENT = @

MODULES = example1 example2 example3

all: $(MODULES)

#disable built-in rule
%: %.cpp

#rule for *.cpp -> *.o
%.o: %.cpp
    $(SILENT) $(ECHO) "--- Compiling $< ---"
    $(SILENT) $(CC) -c $(CFLAGS) $(LDFLAGS) $<

#rule for object -> exectutable
%: %.o
    $(SILENT) $(ECHO) "--- Linking $@ ---"
    $(SILENT) $(CC) $^ $(LDLIBS) -o $@ 

clean:
    $(SILENT) $(ECHO) "--- Removing object files and binaries ---"
    $(SILENT) rm -f *.o 
    $(SILENT) rm -f $(MODULES)

.PHONY: clean
GNU Makefile - Pattern rule with multiple targets with one dependency ignores all targets but the first

GNU Makefile - Pattern rule with multiple targets with one dependency ignores all targets but the first


By : user2991201
Date : March 29 2020, 07:55 AM
I wish this help you Pattern rules work differently than implicit rules. While an implicit rule such as
code :
a b c: d
      command
a: d
      command
b: d
      command
c: d
      command
$ cat GNUmakefile
all: de/x.o en/x.o es/x.o

de/%.o: %.c
        @echo $@ from $<
en/%.o: %.c
        @echo $@ from $<
es/%.o: %.c
        @echo $@ from $<
$ gmake
de/x.o from x.c
en/x.o from x.c
es/x.o from x.c
Two targets with the same name in a Makefile

Two targets with the same name in a Makefile


By : Luke Hayes
Date : March 29 2020, 07:55 AM
Hope that helps If a target is specified without a recipe, it's simply adding a dependency to the target. You're allowed as many of these as you want. So the following is valid:
code :
foo: dep1 dep2

foo: dep3
    recipe1
foo:
    recipe1

foo:
    recipe2
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