Makefile object files different directory. win nix: make -f makefile.

Makefile object files different directory o files to a different directory called obj. There is a problem in the definition of VPATH in the makefile: : is used both as the DOS/Windows drive indicator and as the path separator. c and . h and this line in your . h" in your source file, and your dependency should be . If you are using autoconf/automake, you can easily use a separate build out-of-place build directory for your different build types. I am trying to generate the object files in . Add a file or directory to the CVS repository once, and CVS will retain it indefinitely. 2. o, and mirrors an existing implicit rule. gcc -Iinclude/ Since, you are using makefile, you can include this option in CFLAGS macro in your makefile. h files are changed. o both don't exist at this location. cpp, examp2. win make -f makefile. The Source directory contains individual directories itself for related source code files. I'm attempting to put together a makefile that will take source files from a directory (eg. win and makefile. 0 Makefile file matching sources from different subfolders into single build folder. Create directories when generating object If it is literally saying don't know how to make myfile. Do you want the objects to be created as obj/foo. o files . Here's what you need to insert: $(OBJDIR)/%. PHONY doesn't help here, it's simply passed to $(CC). To get all files from different directories, one might suggest using wildcard function. c generates def. nix and use make win or make nix My goal is to have all object files built in a . c=. c files in the same directory as the object file. What I have is a directory with 3 sub-directories. There is no risk of different versions getting mixed up, as long as qmake is never run in the source directory (if it is, better clean it up well!). CONFIG += object_parallel_to_source You can keep your files in different directories if you like, but that isn't necessary. cc $(CXX) $(CXXFLAGS) -c -o $@ $^ This will give you a problem with Is there a way using GNU Make of compiling all of the C files in a directory into separate programs, with each program named as the source file without the . c removed and replaced by . o it doesn't work. src), compile them into object files in another directory (eg. /StdCUtil Need a Makefile with objects in different folders & working with headers. cpp and the . Makefile to generate objects to a different directory. Share. pro file from currently accepted answer is even simpler: I would like to move the dependency files and object files into two separate folders objects and dependency. One common way to work around this is to keep the directory structure for source files but put it below a new top-level directory; GNU make supports that easily: Good day. For the standard target I want to build all files in the src folder which also includes the main. Putting vpath %. I want to delete . lo *. I would like to be able to do a "make" in each of the sub-directories like lib1 and lib2 to verify the libraries. The next step is to define the set of codes that you are going to need to link your program. Outputting obj files to obj directory in Makefile. c file from src (without me having to list them all in the makefile) and put the . I want a makefile which will compile and link them and give examp1. Nothing fancy- just two directories (maybe a third later) with library code and multiple applications all in the "app" directory. I hoped that my test target would achieve that, but it fails. I want to keep the . With a single source and object file, I'm doing fine following rules like posted elsewhere (Automatic makefile with source and object files in different directories). The last step consist in to link the program, do not forget that the objects are in the [path_obj] folder. exe, examp2. I have been trying to devise a makefile example which can build object files to a different directory structure than the associated source. You can either add a -I option to the command line to tell the compiler to look there for header files. Compile All source file in a directory and store objs in different directory. The . Please note also that under mylib there are subdirectories. build), and then take those files and create a static library from them in the main directory. The rule may produce/update further files, which may trigger other rules and so on. For the output file you could create a Makefile for each subdir, iterate through all the subdirs and launch the corresponding Makefile that will create the output file. c -b. makefile : How to link object files from different subdirectory and include different search paths. h ├── What you need to notice is that your "Makefile" file is the same directory of the include (wildcard $(HEADDIR)/*. Makefile builds source files from different directories into the same object directory. . Here is a simple makefile which supports different directories: #Start of the makefile VPATH = . c files in the directory with the makefile. o files in a build directory and have the built executable stored in a bin directory. Please suggest solution how to include the header file which is in include folder. Additionally I also use multiple compilers (and versions) and multiple operating systems, so I will reproduce the object file directory structure under a directory for each of these compilers (which have newer versions of the standard and vendor libraries) to prevent object files with mismatched included header file versions. bin permanently. c files are in a different directory. later) doesn't have to care about the details or the directory's current state, but can simply indicate a goal, and the program does whatever's --- 3. c" and "abc. la' is done copy_obj: libmyproject. OBJ = $(addprefix $(OBJDIR)/, $(patsubst %. cpp))) The default location for the object file gcc creates is the source file name with the . Make by default defines a pattern target for . Other notes about your makefile: It's never correct to have . exe) in separate directories, and it's not difficult to write a makefile that will lib folder contains . You can change or remove it You cannot without help of an external program. Ask Question Asked 6 years, and as output i want the object files as well as the final binary - build/main. I have multiple directories with multiple source files, which create a single executable. h of all the files I need . Correct, you can see the order with which the builtin rules are defined with make -p -f /dev/null, %: %. You just have to set appropriate make rules. I have next to no experience with Makefiles, and am not really sure what to search for to accomplish this. How to compile sources in different directories into object files all in a single directory (Makefile)? Hot Network Questions Do the twin primes occur approximately exponentially often with Comingling . cpp file, #include "StdCUtil/split. o objdir FILES=file1. – Since the project is most likely going to grow fast in terms of file count and i kind of want to split the source files into different subdirectories this is going to be a mess very soon. object_parallel_to_source — recreate source folder tree for object files (replaces object_with_source). 0 Makefile with directory for object files. Fortran Makefile - Circular dependency dropped and m2c. Recursive makefile with two executables. o). The first When you type make, it will build the all target, creating the build directory if it does not exist, compile the source files into object files in the build directory, and link the object files Main features of this Makefile : Automatic detection of C sources in specified folders; Multiple source folders; Multiple corresponding target folders for object and dependency files; Learn how to write a Makefile for a C++ project that compiles code from different source and header folders. Your overall build target depends on the object You're welcome. The rest of the makefile tries also to use variables. If this is the case, then you will need to add that to the name of every object file, like this: It looks to me like Makefile rules can be roughly classified into "positive" and "negative" ones: "positive" rules create missing or update outdated files, while "negative" ones remove files. You have to write two different rules here, one for each directory: This handles storing the object files in a different directory from where Kbuild lives. For each file in a directory in a Makefile. it's kind of indiscriminate, making all sources prerequisites of every object, ; it often uses the wrong source (as you discovered with file1. cpp $(CXX) $ Using a repository does not have the same drawbacks as explicitly specifying an object directory; makefiles will be implicitly loaded as expected, since as far as makepp is concerned, the makefile actually is in the same directory as the target files. In my Makefile I have list of all cpp's I need, collected partly manually, partly with the help of wildcard. (you need to make build folder at the same make file directory and feel free to change the other names of folders in variables to be suitable for your project): executable and object files in different directories. ├── include │ └── hellomake. o - build/i2c. You have to compile the . You appear to be stating is that some of your . o files in separate folder How can I create a Makefile for C projects with SRC, OBJ, and BIN subdirectories? I am doing a project which is growing pretty fast and keeping the object files up date is no option. PHONY: copy_obj # when building 'all', we *also* want the 'copy_obj' target all: copy_obj # but the 'copy_obj' target can only be executed once 'libmyproject. Or two, actually, because you have two distinct source name patterns. CFLAGS = -Iinclude/ -c -Wall OR Where SRC defines the source directory and BIN the bin directory. It looks really bad with all the . You can change every one of them according to your headers location. sv file a directory gets created in the work folder with the same name as the . In which case you need to get that list from the source files that build them In the example above, the workspace contains two projects, each of which has a Makefile and a Source and Object directories. Following is the code I tried, but it did not work: DIRSRC=src/ DIRLIB=lib/ the src/ directory contains several directories which each contain source files. The tutorial assumes that there is a src directory in the current working directory and a build directory is used to hold the object files. In this chapter, we will discuss a simple makefile that describes how to compile and link a text editor which consists of eight C source files and three header files. cpp and . c ld -o my_program main. For example: $(OBJS) : build/%. /header:. o obj/bar. Makefile with directory for object files. /StdCUtil CFLAGS=-c -Wall -I$(INC_DIR) DEPS = split. in *. First, $< refers to the first prerequesite of the target cg. Now it's time to create the object files. c files in a different directory, and then link them, just like you're compiling and linking Force a re-build when compiler flags change, by adding a dependency for all objects on a meta-file that tracks the last used set of compiler flags. The Makefile in the main directory contains (props to that post): # . OBJDIR = objdir Create a list of object files that need to be compiled, from the list of all . . o, which is just a file in the same directory. o) is not what the rule will actually produce (obj/foo. What I would like my makefile to do would be to compile all . /bin should contain the . o) all: $(OBJS) This will write the object files to the same directory as the source files but I don't want that. There's Makefile and 3 sub-directories and each sub-directory has a . Makefile, executable and object files in different directories. cpp files and headers/ Makefile obj/ bin/ This is the makefile that I use for most of my projects, It permits putting source files, headers and inline files in subfolders, and subfolders of subfolders and so-forth, and will automatically generate a dependency file for each object This means that modification of headers and inline files will trigger recompilation of files which are dependent. Makefile with Objects in Separate Directory Tree. cpp dir1/*. o obj inside the Makefile will tell make to look inside the obj/ directory for object files. Then it generates makefiles in build directory, and then make will generate files under it too. am files for two shared libraries that are referenced. my Makefile does not even come close to You can keep your files in different directories if you like, but that isn't necessary. Given these definitions, subst should be used to substitute the src part of the directory, and the file extension. cpp,%. o) Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about your product, service or employer brand; OverflowAI GenAI features for Teams; OverflowAPI Train & fine-tune LLMs; Labs The future of collective knowledge sharing; About the company I don't see the advantage of all object files located in a separate folder. I tried to get all cpp files in a directory with $(wildcard Src/Source/*. But I want to move those . If you're targeting a usual or "patterned" file, just use make's internal variable $(@D), that means "the directory the current target Putting object files from source files in different directories into a single directory is problematic: if you have two source files with the same name they'll overwrite each other. Makefile: Separated sources and objects Go to the previous, next section. This Makefile creates a f1. This article provides a detailed explanation and example of a Makefile that Q1: How to link object files from a different subdirectory? Let's say your program prog is a C program that will be linked from object file0. The Makefile has to be adequate to be used with Windows and Linux How to save modules in a separate directory using a makefile. obj files to go. o : %. nix and use them: make -f makefile. o files in the /obj folder, then link all the . /objects OUTPUT_OPTION = -o objects/$@ CXXFLAGS += -Wall -g -I. ac and src/Makefile. include folder refers your header . c files that puts the object files next to the source files (you can disable default targets). So, for each object file, the source code file name is obtained by text substitution and prefixed with SRCDIR. cpp files in the /src folder to . Now, how can I compile all them, into my obj folder? I managed to do almost what I want in the following way: I do not have The Diab or CGT compiler tools, so cannot test my suggestions, but it is clear that your makefile is not using the correct options to redirect the object files. And when done like this, the . cpp. am). c files in src (src/*. 6 Descending down in directories A Makefile is only responsible for building objects in its own directory. cpp", make abc will always, and only compile "abc. exe: make_build_dir utilities. linking stage $(program_NAME): $(program_OBJS) $(CXX) $(CFLAGS) $(CXXFLAGS) $(LDFLAGS) $(program_OBJS) -o "$(program_NAME)" compile stage I've got this directory structure: . Declaring it as . o obj/main. /src contains the the . c -o /a/b/c/file. I always list every single object file in my Makefiles and sometimes every single source file. exe The recipes are the same for every file in its list. o and . Commented May 6, 2019 at 12:17 Simple Non-recursive Makefile with This isn't possible as far as I know. c files, you can create a list of object file names from the list of . o --put-object-in-dir-non-existing-option /a1/a2/a3 I have a project that includes many source files in different folder locations. c file2. gcc has no such option—but we don’t have to use gcc, we can write our own compiler wrapper that calls gcc with a modified command line. Makefile and object file directory. o files depend on other . Build makefile with source and header in separate folder. With your makefile in your source directory and with that -I option you should be using #include "split. I want them to be written to separate subdirectories named "objs", "objs/subdir1" and "objs/subdir2" so I've tried the following: OBJS=$(FILES:. The problem beyond wildcard command lies somewhere between "I do not want recursive makefiles" and "I do not want it to list by hand". h files, which means whenever . o, $(wildcard *. PHONY rule means that project_code is not a file that needs to be built . If you want to build a target in another directory you have to tell make that's what you want to do. The (somewhat newer) -MMD option is probably what you want. Automatic makefile with source and object files in different directories. See, for example, how Git manages object files. d files in a separate obj/ directory for cleanliness. Move the path variable into the wildcard so make can actually perform the correct glob. This works best if all object files are supposed to end up in the same directory. am - I have similar Makefile. /header Target = $(notdir $(CURDIR)). So adding the following to Makefile. On Windows, you must replace : by ; or by blanks. I have tried posting on other forums and re-reading the GNU Make documentation, but I In my makefile the list of source files include the path and I would prefer that the list of object files include the corresponding object directory, too. It's "-c" - it says in what directory to put object. o temporarily and the . No matter, you have to explicitly list those . You need a file called a makefile to tell make what to do. – roschach. Object files and source code files are in separate directories and the object file names contain their path. h files, bin/ where the compiled executable is supposed to go and obj/ where I want the . time of src file and corresponding optimized file time to understand if make should really rebuild the optimized file. o happens to be. I want to keep all the temporary . Multiple corresponding target folders for object and dependency files; # Set project directory one level above of Makefile directory. My Makefile should be able to create the object files in the folder "objects". (or even for different I have put together a basic make file for building a library. sv file without the suffix. And you might use other builders like omake, scons, You could use remake to debug your GNU Makefile-s. My project folder is called "project" inside of this folder I have three more folders: sources, headers, objects (empty). This is so very close to what I need, but sadly it assumes that the module Makefile is in the src directory, which is not the case for me (it's being built by autoconf, This question is different from the one at makefiles - compile all c files at once in the sense that I have one extra requirement: I want to redirect all the object files in a separate directory. I made it working, when using the same folder structure as the way my source code is build up, but this is not the solution i am looking for. So when there are two files in the same directory, for example "abc. o obj/directory2/bar. The directory tree, both with source and targets, is as f I have source codes in the "src/" folder, and want to write a Makefile to generate objects files in the "lib/" folder. g. You can give sensible names to the files like makefile. You could compile your source files to object files in different directories ("folder" is not really the appropriate word on Unix). It just build the files from the standard target. 0. c), test sources (foo_test. I have it working in one path setup, but with a different path it's requiring more code to find the headers & not able to place the objects in a different folder. o files in each sub-directory, but when I write down my code like clean: delete *. cpp, %. obj as the dependency. c file and compiling it twice into two different *. Here is the setup: I have multiple sources in a directory say src/mylib. h) # from the list of all source files, create a list of all object files Basically each object file has BOTH source files as a prerequisite. There are files (source, object, executable) in this graph, and rules (make's terminology). Related. If you want the object files to go into a different directory than their corresponding sources, then that would also be I'm not sure if the same rules apply, and since I'm using windows, syntax seems to be a bit different too. cpp file. src1 -a. The linker is doing exactly what it's told: it's told to link "E:\em35x\app\mfglib\mfg-sample. That means autogen is more part of the "unpack sources" than the "compile source code into product" step. hpp files. For completeness an example of a makefile that supports multiple src dirs and build dirs with some comments. Makefile - Compile Single Objects in different directory. But we need to tell the compiler to write object files into the obj/ directory. The objects are supposed to go into a separate directory, which works already. Let's start with the first method. How to write a single Makefile for a project with several folders? 1. In the example above, the workspace contains two projects, each of which has a Makefile and a Source and Object directories. How to modify makefile to compile changed source into object directory except for a For a simple case where the source and objects files are all in the same directory, the method provided is working. This a makefile for a program of mine called sqlcmd (a name chosen a decade and more before Microsoft created a command of the same name). Object files list source and header files as prerequisites. I want the objects files to end up in build/mylib. 2) and use those object files to create an executable located in yet another directory from the object files and the source. cpp test. am. the following generates a list which contains all the object files not in ‘mains’: $(filter-out $(mains),$(objects)) To get different behavior for each of the targets matched by your pattern rule, you could do something like It might help you to think of the difference between ifneq and $(if) in a makefile as like the difference Furthermore while it is unrelated to your question one of the nice things about placing all the build artifacts into a separate directory is cleaning is much easier: clean: rm -rf $(OBJSDIR) $(OUT) Also, as a final note if you ever wish to do a parallel build you will have an issue as your object files rely on the build directory. o the problem is the invoke directory isn't "~/some_dir" so ld doesn't find the object file how can I include "some_dir" in ld search path? These lines in your makefile, INC_DIR = . # Don't try to recreate Makefile file # that is disappeared now from the current directory Makefile : ; $(info CURDIR = $(CURDIR) ) $(info PWD = $(shell pwd) ) The rule $(BUILD_DIR)/%. In my opinion, directories should not be considered targets of your makefile, either in technical or in design sense. Hot Network Questions Here is what you could do: specify the directory where you want the object files to go. when I call my "compiler" which is called vlog, on a . Let's say I have a program that contains a long list of C source files, A. c files, in your makefile, just like you are listing the . o files. You could have inside a rule like I have a directory containing two *. o which are to be compiled into You need an automatic target that creates the object files from the source files in the source directory. obj to build? I would guess that in that rule you are failing to specify $(OUTPUT_DIR)\myfile. Most often, the makefile tells make how to compile and link a program. Also, this folder should be dele I think that telling pass gcc doesn't have an separate option to say where to put object file, since it already has it. 0 makefile: compile from different src dirs to separate obj dir. o", which doesn't exist. (This might break compatibility with other unix implementations of You don't link . That should put all the configured/built files in that directory instead of the source directory I believe. How to improve my makefile in C to move object files and compile even if there are errors? Related. /src:. Ask Question Asked 9 years, 1 month ago. 13. o file as expected: I have my project organized such that all code-files are found in a subdirectory code/. To make the test build I want to build all files in the src folder except main. So look at the mod. c file3. The problem is that I have a seperate directory for the object files that will be generated, as far as my understanding goes the implicit rules will only look for the corresponding . In that directory are three First, your $(OBJECTS) rule is problematic, because:. In this step, choose the option -o [path_obj]/[file_name]. o: $(SRCDIR)/%. Below is my Makefile under ~/src/IRBuild/, I had build compile dependency with . c extension? I don't think you even need a makefile - the default implicit make rules should do it: Is there a way to directly add 3d objects in Blender VSE As the source files might have the same names, I'd like to send the objects into different folders as well. That being said that won't help if this makefile needs to build those . c or . However, if I have the following file tree: src helloworld. o all in the same directory? Or do you want them to be created as obj/directory1/foo. c subdir2/bfile1. c, . From then on you can update it, check it in, whatever. obj then your problem is elsewhere - something in the makefile is asking for an object file in the current directory. The best is a shell script that does the recursion and calls make in each of the subdirectories (look at my comment to @robert in his response) Something like this will do the work (and does not I am trying to write a Makefile that will place object files in obj directory. Is it possible to build the object files to another directory, so that it doesn't take a lot of space in /usr/ports? I've tried something like cd /tmp/build && make -C /usr/ports/lang/gcc/6 Learn makefile - Building from different source folders to different target folders. Simple Non-recursive Makefile with object files in separate directory. o the follows posts give a good reference , but this post can not support if the source in multiple directory , all obj files is in the same directory as c file Makefile : Automatically compile all c files, keeping . BUT because I output . Target wildcards in a shell command. This is like the first method, but has added complexity to handle the duplicate files. using the same make file in a separate directory. o,$(wildcard I'm trying to learn how to use makefiles, and this is my attempt at making a makefile that compiles source files in a source directory (src/) into object files that are created A unified Makefile that builds into a separate output file structure. My directory structure looks like this: root src/ include/ build/ bin/ Makefile and this is . o, so that the source file directory structure is This guide will explain how to write a Makefile for this purpose. How to compile sources in different directories into object files all in a single directory (Makefile)? Hot Network Questions Simultaneously cooling and humidifying in winter? When I try to delete object files using clean option, it keeps making errors. c, B. Modified 8 years, For a separate build directory you may look at VPATH; I prefer to to point it explicitly in the stem rule: $(BUILD)/%. c files that puts the object files next to I am trying to write a makefile(stored in Makefile directory) which will compile source files from Source directory, and place the object files and executables in Objects directory. exe and examp3. The main issue here is that you could run into trouble with collisions among the object files associated with different . o -c main. c), header files (foo. 1. put the object files into a separate folder GNU make # Put the object files into a separate directory: objects/%. c’, and appends the platform's usual object suffix. I am in a directory, where is Makefile and folders src and bin. So, to do (B), you just need to do mkdir build/src build/lib Makefile with directory for object files. I have written this code to get the names of input files and output files Simply compiling and linking every source/object file in every subdir is going to break once you want to build a library, build one file with special compiler settings, write test programs, etc. cg. 4. The main folder has three subfolders test (has some cpp files I want to compile), include (has some headers used by tests), and build (empty folder Makefile to put object files from source files different directories into a single, separate directory? 0. Is there a way to make gcc to create a directory when the enclosing directory of the generated object file does not exist? If not, what could be the easiest way to make the directory in advance automatically, especially for Makefile? As I commented in response to your question/comment to my answer on 4403861: "Your rule says that the object file depends on the object directory - which means that if the object directory has changed since the object file was last built (for example, because you compiled another file), then your file needs to be rebuilt. c is the very first rule for direct compilation from a single source so it has priority. o and add the prefix $(OBJDIR)/ to it:. o files since they won't exist when make is run. o) and executables (foo. Listing a few directories to loop over isn't much of a pain. src/ for . 7. c files: main. How to create make file for only object and header file? 2. How can I configure my makefile for debug and release builds to Here is the documentation from the kernel's Makefile: # kbuild supports saving output files in a separate directory. For example: In a directory there are 3 c++ files, such as examp1. How can I delete object files in sub-directories? Lets say my Makefile is located in the same directory as the sources and I want to store object files in obj/ subdirectory and the target executable in bin/ subdirectory. For one thing you can mix in ordinary make rules into your Makefile. Files in subdirectories should be taken care of by Makefiles in these subdirs. how to set up cross-directory dependencies in gnu make. Do not forget the path to the SRC folder. c src2 -c. exe in the bin folder. I am able to compile the code using the make system's vpath mechanism. o obj Your question is not clear. o files corresponding to a set of . If you don't add an object file to I am stuck in writing a Makefile when my source code files are across different directories. This: OBJS = example. However, I want my executable and Makefile in the main folder: "project" then I can clean the executable and the object files. c files, you link . How to write a Makefile to do the above described job? currently what I am doing in my Makefile is: To do so I have to pass all C-files at once to the compiler frontend. c files, and then make a target that depends on that list: Things that I was wondering if if I can specify where the object files go. o file in a directory abc; only when there exists a directory abc. src/ main. You should create files and if a file creation needs a new directory then quietly create the directory within the rule for the relevant file. Here is my configure. The directory structure is as follows : I have my source files (. Creating a Makefile with Different Executable Files. My makefile looks like this: I want to have them in separate directories like in the tutorial. After you have run autogen, you can run configure in the build directory to get a version of all files necessary to Do you specifically need a separate object directory or would using an entirely separate build directory be enough? That is make a build (or whatever) directory next to (or under or whatever) the source directory and run configure from there. 11. cpp; makefile; bin; and if I use the following makefile: I am a bit a beginner in using makefiles and I am trying to write a makefile for gcc that accepts the inputs from two different directories (in my case they are called kernel and drivers) and output the object files in a different directory (called tmp) using wildcards. cpp) will make the variable contain source files that match wildcard expression. cpp $(CXX) $(CFLAGS) $(CPPFLAGS) -c -o $@ $< gcc -o abc/def. MAKE: compiling all files once AND generating object files into different directory. As you want a different object file name, you need to tell gcc what the generated object file name is to be with what comes after -o. exe, and that is make_build_dir. exe Objects := $(notdir $(patsubst %. c I am using the following makefile: CC=gcc CFLAGS=-c LDFLAGS= SOURCEDIR = src As you can see from the first two lines it is taking the same *. 12. o cg. compiling all files once AND generating object files into different directory. I tried the following: vpath %. An Introduction to Makefiles. o files in obj and the executable built from foo object_with_source — outputs each object file into the same directory as its source file (replaced by object_parallel_to_source in the latest versions). cpp Second, you can use the VPATH variable to tell make to search a different directory for prerequisites. o, but it didn't helped, object files appear in Make looks at modification times to decide if optimized file should be rebuild. This linking part of the makefile. cpp) instead of listing them individually but it failed to even execute the makefile. # In both cases the working directory must be the root of the kernel src. elf (in the comments) regarding the uniqueness of source file names under different directories. First (and what I'd recommend) is you can add the build directory to the target names (even when using a pattern rule). Don't forget SO should be one of your last resorts, after you've tried to work it out yourself. Let's start with setting some I am trying to get make to create a new directory and place all of the object files in it. o $(ELF): $(OBJS) tells make you want to build a file example. That graph is definied in the Makefile. c -d. Note that each line in Makefile runs in a separate shell, so there is no need to change the directory back. So my_sources:=$(wildcard *. When you launch make, it reads Makefile, and checks for changed files. Make: wildcard to use all object files. c files, and the include directory contains the header files. I'm assuming that the macro OBJPATH is where you want the objects to be sent to by the compiler. o files are being created in the same folder where the makefile is. Consider the following Makefile fragment: FORTRAN = ifort -c PATH_MOD = mod/ FILE_MOD = mod_constant is to write a pattern rule. nix or have a Makefile that contains: win: make -f makefile. It's never correct to have executable files depend on header files. , Z. I have source code in one directory and have a makefile in a different directory. If there's any, it triggers the rule, which depends on it. The src directory contains main. I would like to place the object files of the compiler in a different folder than the source files. I want a makefile which will compile all of the cpp files in the current directory to separate executables. c and that the rule for linking a program from a set of object files listed in the macro OBJECTS looks like: all. o and file2. In order to generate all the . o) ; it tries to build executables instead of stopping at objects, and ; the name of the target (foo. Configure makefile for debug and release targets. h /many other *. o. This is basically what is happening in a minimal example -- any ideas?: 1) to create object files from cpp source in different directories, placing all the object files in a separate directory from each of the source directories. The build system will automatically invoke make recursively in subdirectories, provided you let it know of them. I assume that the make program has a rule for compiling C code to object like: ${CC} ${CFLAGS} -c $*. c is very interesting because it only applies to the set of objects The GNU make built in rule for C source files is the one exhibited above. I am new to makefiles but I assume it is something wrong with my $(OBJECTS I want to separate the directory with sources from the directory with targets. c and funcs. Ask Question Asked 8 years, 5 months ago. la mkdir -p objdir cp *. the work/ directory doesn't initially exist, and is created by the makefile. c=objs/. /bin/ But the below code generates in corresponding source file directory. Listing a file to the makefile takes negligible time compared to adding filling it with useful content. How should I modify the makefile if I want to compile (maybe even link) using just one call to GCC? For reference - my makefile looks like this: But you want to link the object files, not the source files, and produce kernel in kern/, not in the parent directory (where I assume you will be running make): Makefile with files in different directories. I see nothing wrong with having regular source files (foo. I have two Makefiles, one in the main directory and one in the code/ subdirectory. o $(CC) $(CFLAGS) -o $@ $< has two issues. However, I use makefiles to automate my build process, and I'm not an expert when it comes to makefile magic. OBJ = $(subst src/,bin/,$(subst . \Objects\myfile. cc-wrapper: Makefile with directory for object files. o files from different subprojects (e. I am trying to apply this and this to set up a makefile to compile a C++ program so that the object files go to a particular directory and that the source files are in their own separate directory. o $(LOADLIBES) $(LDLIBS), but this won't work in our case, because we want to link multiple object files. Similarly we create object files from C++ source files with a rule like $(CXX) -c $(CPPFLAGS) $(CFLAGS). o def. Now I want the makefile to compile every . How can I compile object files into bin folder and then build an executable file? I read some instructions and added $(BIN) before %. o, file1. Use "stat <file compile source files and save object files in an different directory; link the objects into an executable; consider something simple like: all: gcc -o ~/some_dir/main. Since none of your files meet that criteria, this rule cannot match ever and so make will not be able to find a way to build the target build/XXX. ) This is a little messy, but that should not be a concern, as the generated Makefile knows which files they are, and can therefore distinguish them from the installable products where necessary. Your rule maps a single . My objective is making the makefile automatic, so it automatically creates object files from . various programs and libraries) isn't what you'd want. My makefile is present in FOLDER1. cc) in the folders FOLDER1 and FOLDER2 and the header files are in folder named INCLUDE. autogen is a strange beast; the files it creates are necessary to build the project (configure and Makefile. objs directory instead of the root of the Makefile, and to have the binaries (and libraries) copied into the project's bin/ directory. If you have header files in include/ directory, then this command should work for you. Generate output files in separate directory in c using make file. Improve this This is the first time I write a Makefile. It was not that problem but the problem is that the header file is in include folder and it is not getting included in src folder Makefile2 so I think I am wrong in "inc" variable usage. Here are a few makefile debugging hints: first, the -p option will print the entire make database out, including all the values of all the variables. Single object files are linked using $(LD) $(LDFLAGS) n. You can change the rule to Problem is: I have files inside the folder CMM/CMM and OBJECTS assumes the objects to also be in the CMM/CMM folder, but the compiler is putting them in the root folder. make -f . c"(by some default orders? I don't know). You can see my files distribution in the output of tree command that I have added to the post: I want my header files in the includes Need a Makefile with objects in different folders & working with headers. PHONY: project_code project_code: $(MAKE) Makefile with directory for object files. o files in /obj into the output binary in the top-level folder /project. c OBJS=$(FILES:. pro write. c extension. Here's my effort so far: I'm new with makefiles and I'm trying to write one that compiles files from different folders. cpp,. # To locate output files in a separate directory two syntaxes are supported. Second, utilities. cpp with . The make variable $@ is the target name, in this case whatever $(BUILD_DIR)/%. c subdir1/afile1. o files everytime I do make. You should write your prerequisites There are at least two ways you can do this. bin folder contains your . makefile: compile from different src dirs to separate obj dir. Also, in GNU make you can use the $(info ) function to print out information such as variable values. Modified 9 Simple Non-recursive Makefile with object files in separate directory. h" are in conflict. /src/makefile B) Put the objects on the bin directory by brute force: $(BIN_DIR)%. c), puts the object files in the bin folder, and links them into an executable in the main directory. (You have to write one pattern rule per directory where your source files are. c and module. win nix: make -f makefile. I assume, that the names of all cpp files are different (and their objects can safely be put into one dir). I tried the following Makefile to create object file for each source file in src folder, merge them and create the binary file out. c with certain CFLAGS, and compile the rest part of source files with a different CFLAGS value. By default CPP takes the name of the main input file, deletes any directory components and any file suffix such as ‘. You can chance it if you want. In its current state. c, now I want to compile A. exe file called main. o - build/release. mex files built for the same Instead of building objects in another directory, you could try building objects from sources in another directory: put your makefile in the directory where the objects are going to be and tell make to look for sources elsewhere using VPATH. The output filename is the basename of the source file name with the extension changed to o. Makefile: Compiling objects to source folder. $(CURDIR) Put your Makefile directly into the bin directory, set VPATH to the source directory, and implicit rules will work again. c objects I'm trying to compile a/b/c/d into objects files and saved them into objects directory and here is part of my Makefile. c file to a single . am should do what you want:. h), object files (foo. SRCS are all the C files located in the SRC dir, BINS contains all these filenames without the . o: %. h files. If you want to build a file in a different directory, you have to ask for it: Makefile, executable and object files in different directories. project/ bin/ (object files) src/ (source files) executable Makefile The first lines are missing += so they don't work as intended but that's neither here nor there. o,$(SRC))) Then, you have to add new pattern rules to compile your source files. So I set this project up: . What is the rule that needs myfile. cpp and additionally all files in the test folder. Executable files list object files (and libraries, if you have any) as prerequisites. I have a c project with directory layout like this. cpp and examp3. o files to ~/build/IRBuild/, instead of current directory, "make" will rebuild all the . It's simple and works. cpp files by replacing . exe. Having additional flag for directory only must change meening of "-c". Here are some of the other references: How to place object files in separate subdirectory (most promising, I think) You need an automatic target that creates the object files from the source files in the source directory. obj, and not don't know how to make . For example: gcc -c file. C Makefile with My makefile with every file in one directory works fine and looks like this: put the object files into a separate folder GNU make. h or . I am now studying C++. The input files are in all sorts of different directories and it is not acceptable to just list their filenames and use a search path to find them, their explicit paths must be used. "make" will rebuild the object files. aqelq iban bhznds htycig akucq dhgrf acyp arq lugys yipxb