shell_default(3erl) Erlang Module Definition shell_default(3erl)NAME
shell_default - Customizing the Erlang Environment
DESCRIPTION
The functions in shell_default are called when no module name is given in a shell command.
Consider the following shell dialogue:
1 > lists:reverse("abc").
"cba"
2 > c(foo).
{ok, foo}
In command one, the module lists is called. In command two, no module name is specified. The shell searches the modules user_default fol-
lowed by shell_default for the function foo/1 .
shell_default is intended for "system wide" customizations to the shell. user_default is intended for "local" or individual user customiza-
tions.
HINT
To add your own commands to the shell, create a module called user_default and add the commands you want. Then add the following line as
the first line in your .erlang file in your home directory.
code:load_abs("$PATH/user_default").
$PATH is the directory where your user_default module can be found.
Ericsson AB stdlib 1.17.3 shell_default(3erl)
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make(3erl) Erlang Module Definition make(3erl)NAME
make - A Make Utility for Erlang
DESCRIPTION
The module make provides a set of functions similar to the UNIX type Make functions.
EXPORTS
all() -> up_to_date | error
all(Options) -> up_to_date | error
Types Options = [Option]
Option = noexec | load | netload | <compiler option>
This function first looks in the current working directory for a file named Emakefile (see below) specifying the set of modules to
compile and the compile options to use. If no such file is found, the set of modules to compile defaults to all modules in the cur-
rent working directory.
Traversing the set of modules, it then recompiles every module for which at least one of the following conditions apply:
* there is no object file, or
* the source file has been modified since it was last compiled, or,
* an include file has been modified since the source file was last compiled.
As a side effect, the function prints the name of each module it tries to compile. If compilation fails for a module, the make pro-
cedure stops and error is returned.
Options is a list of make- and compiler options. The following make options exist:
* noexec
No execution mode. Just prints the name of each module that needs to be compiled.
* load
Load mode. Loads all recompiled modules.
* netload
Net load mode. Loads all recompiled modules an all known nodes.
All items in Options that are not make options are assumed to be compiler options and are passed as-is to compile:file/2 . Options
defaults to [] .
files(ModFiles) -> up_to_date | error
files(ModFiles, Options) -> up_to_date | error
Types ModFiles = [Module | File]
Module = atom()
File = string()
Options = [Option]
Option = noexec | load | netload | <compiler option>
files/1,2 does exactly the same thing as all/0,1 but for the specified ModFiles , which is a list of module or file names. The file
extension .erl may be omitted.
The Emakefile (if it exists) in the current directory is searched for compiler options for each module. If a given module does not
exist in Emakefile or if Emakefile does not exist, the module is still compiled.
EMAKEFILE
make:all/0,1 and make:files/1,2 looks in the current working directory for a file named Emakefile . If it exists, Emakefile should contain
elements like this:
Modules.
{Modules,Options}.
Modules is an atom or a list of atoms. It can be
* a module name, e.g. file1
* a module name in another directory, e.g. ../foo/file3
* a set of modules specified with a wildcards, e.g. 'file*'
* a wildcard indicating all modules in current directory, i.e. '*'
* a list of any of the above, e.g. ['file*','../foo/file3','File4']
Options is a list of compiler options.
Emakefile is read from top to bottom. If a module matches more than one entry, the first match is valid. For example, the following Emake-
file means that file1 shall be compiled with the options [debug_info,{i,"../foo"}] , while all other files in the current directory shall
be compiled with only the debug_info flag.
{'file1',[debug_info,{i,"../foo"}]}.
{'*',[debug_info]}.
Ericsson AB tools 2.6.6.3 make(3erl)