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makepp_rules -- How to tell makepp to build something


?: &,
@, B: :build_cache,
:build_check, D: :dispatch, E: :env, I: "ignore_error",
:include, L: :last_chance, M: makeperl, N: "noecho", P: :parser,
"perl", S: :signature

A rule is what tells makepp how to build a file or a class of files. Makepp supports the
same rule syntax as other implementations of make, plus some additions of its own.

A rule has the general format

target_expression : dependency_expression [ : optional arguments]

The list of targets may not contain any automatic variables (except "$(foreach)"). The
dependency list may contain only automatic variables referring to the target (i.e.,
"$(output)", "$(outputs)", or their synonyms). The action may contain any automatic

If makepp decides that the rule needs to be executed, each line of the rule is executed
sequentially, and if any returns a non-zero status, the remainder are not executed (and
makepp aborts with an error unless you specified the "-k" option on the command line.)
Each action should be only one line. If an action is too long to write conveniently on a
single line, you can split it into several lines and put a backslash to indicate that the
several lines should be combined into one.

In order to distinguish actions from the next rule, the action should be indented more
than the line containing the targets and dependencies. Unlike other implementations of
make, makepp doesn't really care how much you indent it or whether you use tab characters
rather than spaces. To keep backward compatibility with traditional make, the rules
makepp uses to decide when actions end and the next rule begins are somewhat complicated:

· The first action line must be indented more than the line containing the target.

· If a line is indented by one tab character or 8 spaces or more, then it is considered
an action line.

· A blank line or a comment line with the "#" character at the right margin ends the
rule, unless the next non-blank line is indented more than 8 spaces (or more than one

· If a line is indented as much or more than the first action line, then it is
considered an additional action line.

There are a few special action items:

& This symbol shall be followed by a command name and any number of arguments. Shell
syntax is not understood fully here, only single and double quotes and backslashed
characters within, as throughout makepp. The command name either leads to a function
"c_name" to be called with the remaining strings as arguments. If such a function can
not be found, this is identical to calling "run" from a "perl" block.

This allows efficiently calling a built-in, makefile-provided or external command.
The prefix "&" has been chosen because it is the function invoker in Perl, and because
at the beginning it is illegal in Shell.

$(ROOT)/include/%.h: %.h
&ln $(input) $(output)

@ Normally, each shell command is printed as it is executed. However, if the first word
of the action is "noecho" (or if it begins with the character "@"), then the command
is not printed. For example,

%.o: %.cxx
noecho $(LIBTOOL) --mode=compile $(CC) -c $(input)

This means that when the libtool command is executed, it is not printed. (Libtool
itself usually prints the modified command that it executes, so it's redundant to
print it twice.)

- Normally, if the shell command returns a non-zero status, then makepp aborts because
the command failed. However, some programs incorrectly set the status on exit, or
there may be an error which really isn't fatal and shouldn't abort the whole
compilation. You can cause makepp to ignore the return status by specifying
"ignore_error" as the first word of the command line (or "-" as the first character).
For example,

$(phony distribution):
ignore_error rm -r my_program-$(VERSION) # Get rid of previous junk.
&mkdir my_program-$(VERSION)
&cp $(FILES) my_program-$(VERSION)
tar cf my_program-$(VERSION).tar my_program-$(VERSION)

This command makes a directory, copies a bunch of files into it, and then puts
everything into a tar file for distribution. It's a good idea to clean out the
previous contents of the directory, if there was anything there previously, and that's
what the first line does. The "rm" might fail, but its return status is ignored.

This is essentially the same as the perl statement, but it is performed each time when
running the rule, not when reading the makefile. The first variant is plain Perl
code, while the second variant first passes the statement through Make-style variable

For the two possibilities of putting the braces of the body, see the explanation at
"perl_perlcode" in makepp_statements. Note that the third variant explained there
makes no sence here, because all action lines must be indented. You must signal
failure in Perl statements, by calling "die".

Per rule the Perl statements are currently evaluated in a common subprocess, except on
Windows. That means they have only read access to any makefile variables. It is also
the process which executes non-Perl actions. So calling exec or exit will confuse
makepp. But this may change in the future. For an efficient way to call Perl
scripts, see the previous item "&" or "run".

$(phony version):
noecho perl {{ # $(target) & $(VERSION) from Perl:
print "This is ".f_target()." $VERSION\n";
echo You can mix this with Shell commands
-makeperl { print "This is $(target) $(VERSION)\n" }

There are several different kinds of rules, each with different purposes.

Explicit Rules
target1 target2: dependency1 dependency2 ...
actions to be performed

This syntax specifies that in order to make either target1 or target2, all the files
dependency1, dependency2, etc., must already have been made. Then the given actions are
executed by the shell to make the targets.

The first explicit rule in a file is the default target, and is made if you do not specify
any targets on the command line.

Unlike traditional make programs, makepp usually assumes that one invocation of the action
makes all of the targets (unless there are no dependencies). For example, one invocation
of yacc creates both output files for this rule:

y.tab.c y.tab.h : parser.y
$(YACC) -d parser.y

Note that other implementations of make do not have a concept of a single command
producing multiple output files, and so when you specify multiple targets they will
execute the rule once per target. Makepp will revert to this behavior if it looks like
this is an old-style makefile. Specifically, it will execute the rule once per target,
instead of just once overall, if all of the following are true:

· The rule action mentions the automatic variable $@. (The synonyms "$(output)" or
"$(target)" do not trigger this behavior.)

· The rule action does not mention the automatic variable "$(outputs)" (or its synonym

· This is not a pattern rule, and there is no foreach clause.

For example,

all test install:
for subdir in $(SUBDIRS); do cd $$subdir && $(MAKE) $@; cd ..; done

is a common idiom in makefiles, and makepp supports it. (Note that you should never use
recursive make in any new makefiles you write--use the "load_makefile" statement, or
implicit makefile loading instead.)

If you want to have the same rule executed once for each target (e.g., because the targets
have similar commands), it's preferable to use either a pattern rule (see below) or a
"foreach" clause. For example, if with a traditional make program you would write:

a b c d:
do_something to build $@ > $@

in makepp, you would probably want to write it like this:

$(foreach) : : foreach a b c d
do_something to build $(output) > $(output)

Phony targets

A phony target is a target that will never actually exist in the file system; it's just a
way of getting makepp to build some targets and possibly execute some additional commands.

A typical phony target is "all", which usually is used to cause everything that can be
built to be built, like this:

all: prog1 prog2 subdir/prog3 subdir2/libmine.a
@&echo "All done!"

If you type "makepp all", or if you put all as the first explicit target in your makefile
(which is typical) and just type "makepp", then it will cause all the dependencies to be
built, then it will print "All done!". At this point, makepp will look for the file ./all
and will discover that it doesn't exist. It will complain loudly.

To keep makepp from expecting the file ./all to exit, you need to tell it that it's a
phony target. Just put a line like the following in your makefile (it makes no difference

.PHONY: all

An equivalent alternative which is sometimes more convenient is to use the "$(phony )"
function, like this:

$(phony all): prog1 prog2 subdir/prog3 subdir2/libmine.a

Phony targets in one makefile can refer to phony targets in another makefile. This is
often done with the "clean" target, like this:

# Top level makefile:
# lots of rules and stuff here
# ....
$(phony clean): subdir1/clean subdir2/clean
&rm -fm my_program

Then in the subdirectories, the makefiles might read like this:

# Makefile in a subdirectory
# ...
$(phony clean):
&rm -fm $(wildcard *.o *.a)

But nowadays you would use the "makeppclean" command, instead of a clean target.


It is safe to specify wildcards in the dependency list. Wildcards match not only files
that exist, but files which can be created given the rules in the makefile. For example,
to build a library from all .o files in a directory, you could write this:

libmine.a: *.o
&rm -f $(output)
ar cr $(output) $(inputs)

This will work even if none of the ".o" files have been created yet, because makepp's
wildcards match files which do not yet exist but can be built. This will even pick up
files whose rule is discovered later (in the same makefile, or one not yet read). In this
last point it differs from the "wildcard" function, which is limited to the known rules,
as it must return its result when it is expanded.

Makepp supports all the usual shell wildcards ("*", "?", and "[]"). It also has a
wildcard "**" which matches any number of intervening directories. (This idea was stolen
from zsh.) For example, "**/*.c" matches all the .c files in the entire source tree.
"objects/**/*.o" matches all the .o files contained anywhere in the subdirectory objects
or any of its subdirectories or any of their subdirectories. The "**" wildcard will not
follow soft links to directories at any level. It also will never return phony targets.

Makepp's wildcards will ignore files or directories which exist but cannot be read. After
all, such files cannot be used in the build process anyway. Putting unreadable files in a
directory is primarily useful to inhibit the automatic import of the given file from a

The initial assertion was that this is safe. This is in the sence that it works whether
the files already exist, or need to be built first. However it is unsafe in the sence
that it will still match files that were built by makepp, but no longer have a rule (e.g.
you removed the .c file, but the .o file is still there.) To prevent this, use the
"--rm-stale" option.

Pattern rules
A pattern rule is a rule that is applied based on some textual pattern. This is used to
apply the same rule to a whole class of files. The syntax is the same as GNU make's
pattern rules:

%.o: %.c
$(CC) -c $(input) -o $(output)

This says that any file in the current directory which matches "*.c" can be converted into
the corresponding .o file using the given command.

Note that several pattern dependencies may be supplied. For example, if your xyz.o file
depends on the corresponding xyz.cpp file, and also on a file called moc_xyz.cflags which
contains the compiler options, this could be expressed with:

%.o: %.cpp %.cflags
$(CXX) `cat $(stem).cflags` -c $(inputs) -o $(output)

You may also have several pattern targets. For example,

%.tab.h %.tab.c : %.y
yacc -d $(input)
&mv y.tab.h $(stem).tab.h
&mv y.tab.c $(stem).tab.c

Ordinarily, pattern rules only look for files in the current directories. You can force
them to search in the current directory and all directories beneath it by setting

makepp_percent_subdirs := 1

before the first pattern rule in your makefile or on the command line for example.

There is a clear difference between "%" and the wildcard "*", though both match any
string: The wildcard returns a list of files that is completely used at that point. So
this depends on all .o files buildable here:

prog: *.o
$(LD) $(LDFLAGS) $(inputs) -o $(output)

This could not be achieved by replacing "*" with "%", because the latter is for one-by-one
matching of input to output, producing internally one rule for each matched stem.

Static pattern rules
A static pattern rule is a pattern rule that is applied only to a limited set of files:

$(SPECIAL_MODULES).o : %.o : %.cpp
$(CXX) -c $(input) -o $(output)

This says that the pattern rule applies only to the files in "$(SPECIAL_MODULES).o".

This is mostly for compatibility with GNU make; foreach rules (see below) are a more
powerful way of doing the same thing.

Foreach rules
The above pattern rule syntax is powerful enough to support almost all builds, but
occasionally it is necessary to do something more complicated. Makepp provides a more
powerful syntax: the ":foreach" clause for the rule.

target_expression : dependency_expression : foreach file-list

The simplest kind of foreach rule is just a pattern rule whose application is restricted
to a specific list of files. For example, suppose you have a pattern rule that tells
makepp how to compile all .c files. However, you have a list of .c files for which you
want to do something different. You could do something like this:

# Here's the rule that applies to everything:
%.o : %.c
$(CC) $(CFLAGS) -c $(input) -o $(output)

%.o : %.c : foreach $(SPECIAL_MODULES)
$(CC) $(SPECIAL_CFLAGS) -c $(input) -o $(output)

An even more powerful use of foreach rules takes advantage of the fact that the variable
"$(foreach)" is set in turn to each file matching the file list and the target and
dependency expressions are evaluated. The file-list may contain wildcards, and these
match even files which don't exist yet but which can be built (see "Wildcards" in

This is an unwieldy syntax but it is extremely flexible, because the "$(foreach)" variable
may appear in any way in the expression. First, note that pattern rules are in fact a
special case of foreach rules; the pattern rule

%.o : %.c
$(CC) $(CFLAGS) -c $(input) -o $(output)

is exactly equivalent to:

$(patsubst %.c, %.o, $(foreach)) : $(foreach) : foreach *.c
$(CC) $(CFLAGS) -c $(input) -o $(output)

(In fact, it's converted to approximately that internally.)

As an example of how you would use a ":foreach" clause where a pattern rule isn't
sufficient, suppose you have some .c files which are built using some kind of preprocessor
which takes as input files with a .k extension. You want to compile those .c files with a
different set of compilation options than the usual .c files which are ordinary source
files. You could do something like this:

# Rule for ordinary .c files:
%.o : %.c
$(CC) $(CFLAGS) -c $(input) -o $(output)

# Rule to make .c files from .k files:
%.c : %.k
$(preprocessor) $(input) > $(output)

# Special build rules for .c files which are made from .k files:
$(foreach:%.k=%.o) : $(foreach:%.c=%.k) : foreach *.k
$(CC) $(SPECIAL_CFLAGS) -c $(input) -o $(output)

(This uses the slightly more concise substitution reference syntax rather than calling
"patsubst" explicitly.)

Note that if all you want to do is to change the value of a variable ("CFLAGS" in this
case) it's sometimes more convenient to use target-specific variables.

Legacy suffix rules
For backward compatibility, makepp supports the old-style suffix rules.


is equivalent to

%.suffix2: %.suffix1

but much harder to remember. (Which suffix comes first?) Typically, a rule will appear
in a legacy makefile like this:

$(CC) $(CFLAGS) -c $*.c -o $*.o

which is exactly equivalent to

%.o : %.c
$(CC) $(CFLAGS) -c $(input) -o $(output)

Conflicting rules
When there is more than one way to make a file, makepp uses a simple procedure to
determine which rule to use.

· It is an error to have conflicting explicit rules for building a file.

· Pattern rules and foreach rules with wildcards never override explicit rules. Thus
explicit rules can be used to specify exceptions for pattern rules. (Note that simply
using a ":foreach" clause doesn't make something a pattern rule. It must have a
wildcard (like "*" or "?") as part of the filename in the ":foreach" clause. If it is
just an explicit list of files, it is treated as an explicit rule for each of those

· When conflicting pattern rules come from different makefiles, rules from "nearer"
makefiles override rules from "farther" makefiles. "Nearer" means that the makefile
is located closer to the target in the directory hierarchy (i.e., the file name of the
target relative to the directory the makefile is run from is shorter). If this
doesn't distinguish the makefiles, then the rule from the makefile which is loaded
latest is used.

This means that you can specify a pattern rule that applies to all files in your
entire directory tree in just the top-level makefile, but then you can override it in
a lower-level makefile. For example, your top-level makefile could contain:

%.o : %.c : foreach **/*.c
$(CC) $(CFLAGS) -c $(input) -o $(output)

and you could have a makefile in one of the subdirectories that says:

%.o : %.c
$(CC) $(SPECIAL_CFLAGS) -c $(input) -o $(output)

· Pattern rules that have a shorter chain of inference are preferred over other pattern
rules. For example, if you had the following rules (based on an example from the
Linux kernel):

%.s: %.c
$(CC) -s $(input) -o $(output)

%.o: %.s
$(AS) $(input) -o $(output)

%.o: %.c
$(CC) -c $(input) -o $(output)

If we need to build "xyz.o", we could either build the intermediate ".s" file and then
run that through the assembler using the first two rules, or we could go directly to a
".o" file using the last rule. The last rule is preferred because there are fewer
steps in the chain of inference (one instead of two).

· Pattern rules later in a makefile override pattern rules that are earlier. (This is
backwards from GNU make.) This means that you should put your more general rules
earlier, and your more specific rules later. For example,

%.o: %.c # General compilation rule.

special_%.o: special_%.c # Special rule for files with a
different action # "special_" prefix.

Rule options
Sometimes it is necessary to supply additional options to modify how makepp executes the
rule. These options are specified as ":optionname value", either on the line containing
the dependencies, or on the next line.

Supplying the options on separate lines may make it possible for you to use the same
makefile with makepp and a traditional make. For example,

target : dependencies
: signature target_newer

will work fine with a traditional Unix make, because it interprets the ": signature" line
as a shell command, and a command beginning with a colon does nothing.

:build_cache /path/to/build/cache
target : dependencies
: build_cache /put/cache/files/over/there

Specifies the path to a build cache to be used for files produced by this rule. This
overrides the effect of the "build_cache" statement or the "--build-cache" command
line option, if any, for this rule. See makepp_build_cache for details about build

If you specify "none" instead of a path, you disable the build cache for this
particular rule. This can be useful to avoid wasting disk space on files that you
know aren't useful to cache, either because you are very sure they will never be
reused or because they are built so fast that it's not worth caching them.

:build_check build_check_method
target : dependencies
: build_check target_newer

This tells makepp what algorithm to use to decide if the targets need to be rebuilt.
See makepp_build_check for more details. This overrides the effect of the
"build_check" statement or the "--build-check-method" command line option, if any, for
this rule.

:env VARIABLE ...
Add a dependency on the values of the named environment variables. If any of them
differ from the previous build, then the targets are considered out of date, if the
build_check method so dictates. (All of the built-in build check methods except for
target_newer respect this.)

VARIABLE may be of the form "filename in PATH_VARIABLE" (in quotes), in which case the
targets are considered out of date if the first directory from the colon-delimited
value of PATH_VARIABLE in which filename exists is different from the last build.
This can be used to avoid rebuilding the targets when PATH_VARIABLE changes in an
irrelevant way.

:dispatch command ...
Enclose each shell action (but not Perl actions nor Perl commands) in a "sh -c '...'"
and prefix it with command, but assume that the target doesn't depend on command.
This is useful if you want to send actions to a job queuing system, but the result is
assumed to be independent of the queuing parameters, as well as to whether the queuing
system is used at all.

:include file_or_pattern
Rule varies depending on compiler:

%.o : %.c
: include %.d : signature C
gcc -MD -c ...

%.o : %.c
: include %.u : signature C # IBM uses a different suffix
xlc -M -c ...

sub dependify { # Turn Microsoft's chatter into useful format
s/(Note: including file: *)?(.+?)\r?\n/$1 ? "'$2' " : "'".f_output()."': "/e;
%.o : %.c
: include %.d : signature C
cl -showIncludes -c ... >$(stem).d
&sed &dependify -o +<$(stem).d

Some compilers (Intel's icc just like gcc above, or IBM's xlc) can produce dependency
files on the fly. That is, while they compile, they write a makefile that makepp can
include. The advantage over makepp's scanner is that it is guaranteed to be 100%
correct, where we may only come close.

This option harnesses that in a special way: If the file is not present, i.e.
typically on the 1st build, normal scanning occurs. But if the file is present, no
scanning occurs (which is why we specify a smart signature above -- not scanning falls
back to the dumb default of timestamp and size). Instead it includes the file, before
executing the rule. After successfully executing the rule, it forgets whatever it
read the first time, given that the file might have been outdated. Instead it reads
the file again, if it changed, for having up-to-date build info.

WARNING: This is inherently unreliable. The dependency file gets produced by the very
rule for which it is a dependency. On the other hand, the compiler knows about all
it's internal sub-includes, which makepp usually ignores. This is a reliability
advantage only for the case where a compiler patch fixes only the sub-includes. The
price is that makepp ends up looking at many more files, which takes time.

There is a catch when you remove an "#include" statement and the corresponding file:
It will still be mentioned in the dependency file from the last time, when it was
needed. In such a case you must edit the dependency file to remove the dependency
which is no longer fulfillable.

This feature can not be used with a build cache because fetching a file from there
requires knowing everything about the file. But a dependency file depends on those
files makepp learns about by reading it. Such a circular dependency is not normally
possible in a reliable build system. This is an exception because after rebuilding
and rereading a dependency file everything is correct again.

If you build in your repositories, makepp will pick up the dependency file from the
1st repository which contains one. This is unlike other files, where it takes the 1st
with the expected signature. This is better than for build caches, where for lack of
signature, it can't even find the file.

Enable an open-ended rule, such as

%.foo foo%.bar: :last_chance
&echo $@ -o $@
&cp $(outputs)

Because a rule such as this could generate an essentially infinite number of targets,
a target of this rule will not match a $(wildcard) function or pattern rule unless
something else has already instanced the rule by referencing the target specifically.
Furthermore, if "--rm-stale" is specified, then a target left over from a previous
makepp run will appear stale if the only way to build it is via a last_chance rule
that hasn't been instanced for the target yet, which is a desirable behavior because
the build will fail more consistently when it erroneously relies on a wildcard to
match targets from a previous run.

The ":last_chance" option is intended to call attention to the special behavior of the
rule with respect to matching wildcards.

:parser parser
This tells makepp how to parse the command for detecting (include) files. Usually,
makepp guesses how to do this based on the words in the command itself (see
makepp_scanning for details). However, if makepp guesses wrongly, you may want to
explicitly indicate the parser, like this:

%.o: %.abc
: parser c_compilation
action here

This causes makepp to perform the same parsing and scanning that it does for C/C++
build commands, even if it doesn't recognize the action as a C compilation.

The default parser depends on the command. If you do not specify a ":parser" option,
then the first word of each command is examined. For example for a compile or link
command, makepp will use the "c_compilation" parser; or if the command looks like the
GNU variant, "gcc_compilation". If no parser is found it uses the "none" parser. For
more details on this, or if you want to write your own parser or change makepp's
default parsers, see makepp_scanning.

Note that this applies to every command in the rule, which may not be what you want:

%.o: %.c : parser c-compilation
@echo 'Building $(output)'
@funny_cc ...

This will also interpret "echo" as a compiler and deduce its argument 'Building
mymodule.o' as an implicit dependency. This will lead to the complaint that it
doesn't know how to build such a file. In this case you would be better off with
"register_parser". There you find an explanation how parser can be given either as a
classname or as a function name.

:signature signature_method
target : dependencies
: signature md5

This tells makepp what algorithm to use to determine if the dependencies have changed.
See makepp_signatures for more details. Signature methods which are included with the
makepp distribution are are "plain", "md5", "C" or "c_compilation_md5", and
"shared_object". This overrides any signature method specified with the "-m" or
"--signature-method" command line options, or with the "signature" statement.

Special characters
Makepp can support filenames that have special characters in them like a colon or a space.
Suppose, for example, you want to create a file called "a:thing" from the file "b:thing".
You can't write the rule this way:

a:thing : b:thing # This is a syntax error
&cat $(input) -o $(output)

because makepp won't know which colons separate targets from dependencies and which are
part of the filenames. Instead, simply enclose the name in quotes, like this:

"a:thing" : "b:thing"
&cat $(input) -o $(output)

Now the rule is unambiguous.

Makepp's quoting syntax is quite similar to the shell's. You can, for example, use single
quotes instead of double quotes, or you can escape special characters with a backslash:

a\:thing : 'b:thing'
&cat $(input) -o $(output)

Suppose, for example, that your filename is "'"!;\$". Now why you'd want such a filename
I don't know, but here are several ways you could specify it to makepp (and the shell):


Pay attention as to when makepp strips quotes and when the shell does. Makepp looks at
quotes only in the following cases:

· in the "ifeq" family of tests

· before and after the rule colon

· in a makepp builtin command

· in a function that pertains to files

Unlike the shell, makepp doesn't expand quotes while assigning them to a variable. Thus
the following rules are identical:

FILE = 'name with spaces'
x := $(print $(FILE)) # just to check that quotes are still there
$(FILE): # quotes around single file stripped by makepp
&echo hello -o$(FILE) # quotes around single file stripped by makepp
echo there >>$(FILE) # quotes around single file stripped by Shell
'name with spaces':
&echo hello -o'name with spaces'
echo there >>'$(output)' # quotes were stripped above, add them again

Note that (unlike the Shell) variables beginning with "$" are expanded even inside single
quotes. Dollar signs cannot be protected by quotes or backslashes. To get a literal
dollar sign, use a double dollar sign, e.g.,

$(phony all):
@&echo This is a dollar sign: $$
@for val in a b c d; do echo $$val; done

Generally, you should be able to deal with just about any special character by quoting it
in some way. This includes spaces, control characters, etc. However, be aware that at
present, makepp's comment stripping is somewhat simplistic, and any "#" characters
preceded by whitespace will be interpreted as comments no matter how they are quoted.

When a target or dependency name is put into an automatic variable like "$(output)", then
the quotes and any backslashes are stripped. This means that if you want to reference the
filename in the actions, you will probably have to quote it again, like this:

"a file name with spaces":
echo "Special contents" > "$@"

If you don't put the quotes around $@, then the shell will see the command

echo "Special contents" > a file name with spaces

which writes the string "Special contents file name with spaces" to the file called a.
This is probably not what you want.

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    Download LMMS Digital Audio Workstation
  • 3
    FreeRTOS Real Time Kernel (RTOS)
    FreeRTOS Real Time Kernel (RTOS)
    FreeRTOS is a market-leading real-time
    operating system (RTOS) for
    microcontrollers and small
    microprocessors. Distributed freely
    under the MIT open source lice...
    Download FreeRTOS Real Time Kernel (RTOS)
  • 4
    Avogadro is an advanced molecular
    editor designed for cross-platform use
    in computational chemistry, molecular
    modeling, bioinformatics, materials
    science and ...
    Download Avogadro
  • 5
    XMLTV is a set of programs to process
    TV (tvguide) listings and help manage
    your TV viewing, storing listings in an
    XML-based format. There are utilities to
    Download XMLTV
  • 6
    Strikr Free Software project. Artifacts
    released under a 'intent based'
    dual license: AGPLv3 (community) and
    CC-BY-NC-ND 4.0 international
    Download strikr
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Linux commands