erlc
(1)
名称
erlc - Compiler
用法概要
Please see following description for synopsis
描述
User Commands erlc(1)
NAME
erlc - Compiler
DESCRIPTION
The erlc program provides a common way to run all compilers
in the Erlang system. Depending on the extension of each
input file, erlc will invoke the appropriate compiler.
Regardless of which compiler is used, the same flags are
used to provide parameters such as include paths and output
directory.
The current working directory, ".", will not be included in
the code path when running the compiler (to avoid loading
Beam files from the current working directory that could
potentially be in conflict with the compiler or Erlang/OTP
system used by the compiler).
EXPORTS
erlc flags file1.ext file2.ext...
Erlc compiles one or more files. The files must include
the extension, for example .erl for Erlang source code,
or .yrl for Yecc source code. Erlc uses the extension
to invoke the correct compiler.
GENERALLY USEFUL FLAGS
The following flags are supported:
-I directory:
Instructs the compiler to search for include files in
the specified directory. When encountering an -include
or -include_lib directive, the compiler searches for
header files in the following directories:
* ".", the current working directory of the file server;
* the base name of the compiled file;
* the directories specified using the -I option. The
directory specified last is searched first.
-o directory:
The directory where the compiler should place the output
files. If not specified, output files will be placed in
the current working directory.
-Dname:
Defines a macro.
-Dname=value:
Defines a macro with the given value. The value can be
any Erlang term. Depending on the platform, the value
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User Commands erlc(1)
may need to be quoted if the shell itself interprets
certain characters. On Unix, terms which contain tuples
and list must be quoted. Terms which contain spaces must
be quoted on all platforms.
-Werror:
Makes all warnings into errors.
-Wnumber:
Sets warning level to number. Default is 1. Use -W0 to
turn off warnings.
-W:
Same as -W1. Default.
-v:
Enables verbose output.
-b output-type:
Specifies the type of output file. Generally, output-
type is the same as the file extension of the output
file but without the period. This option will be ignored
by compilers that have a a single output format.
-smp:
Compile using the SMP emulator. This is mainly useful
for compiling native code, which needs to be compiled
with the same run-time system that it should be run on.
-M:
Produces a Makefile rule to track headers dependencies.
The rule is sent to stdout. No object file is produced.
-MF Makefile:
Like the -M option above, except that the Makefile is
written to Makefile. No object file is produced.
-MD:
Same as -M -MF <File>.Pbeam.
-MT Target:
In conjunction with -M or -MF, change the name of the
rule emitted to Target.
-MQ Target:
Like the -MT option above, except that characters spe-
cial to make(1) are quoted.
-MP:
In conjunction with -M or -MF, add a phony target for
each dependency.
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User Commands erlc(1)
-MG:
In conjunction with -M or -MF, consider missing headers
as generated files and add them to the dependencies.
--:
Signals that no more options will follow. The rest of
the arguments will be treated as file names, even if
they start with hyphens.
+term:
A flag starting with a plus ('+') rather than a hyphen
will be converted to an Erlang term and passed unchanged
to the compiler. For instance, the export_all option for
the Erlang compiler can be specified as follows:
erlc +export_all file.erl
Depending on the platform, the value may need to be
quoted if the shell itself interprets certain charac-
ters. On Unix, terms which contain tuples and list must
be quoted. Terms which contain spaces must be quoted on
all platforms.
SPECIAL FLAGS
The flags in this section are useful in special situations
such as re-building the OTP system.
-pa directory:
Appends directory to the front of the code path in the
invoked Erlang emulator. This can be used to invoke
another compiler than the default one.
-pz directory:
Appends directory to the code path in the invoked Erlang
emulator.
SUPPORTED COMPILERS
.erl:
Erlang source code. It generates a .beam file.
The options -P, -E, and -S are equivalent to +'P', +'E',
and +'S', except that it is not necessary to include the
single quotes to protect them from the shell.
Supported options: -I, -o, -D, -v, -W, -b.
.yrl:
Yecc source code. It generates an .erl file.
Use the -I option with the name of a file to use that
file as a customized prologue file (the includefile
option).
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User Commands erlc(1)
Supported options: -o, -v, -I, -W (see above).
.mib:
MIB for SNMP. It generates a .bin file.
Supported options: -I, -o, -W.
.bin:
A compiled MIB for SNMP. It generates a .hrl file.
Supported options: -o, -v.
.rel:
Script file. It generates a boot file.
Use the -I to name directories to be searched for appli-
cation files (equivalent to the path in the option list
for systools:make_script/2).
Supported options: -o.
.asn1:
ASN1 file.
Creates an .erl, .hrl, and .asn1db file from an .asn1
file. Also compiles the .erl using the Erlang compiler
unless the +noobj options is given.
Supported options: -I, -o, -b, -W.
.idl:
IC file.
Runs the IDL compiler.
Supported options: -I, -o.
ENVIRONMENT VARIABLES
ERLC_EMULATOR:
The command for starting the emulator. Default is erl in
the same directory as the erlc program itself, or if it
doesn't exist, erl in any of the directories given in
the PATH environment variable.
ATTRIBUTES
See attributes(5) for descriptions of the following
attributes:
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User Commands erlc(1)
+---------------+------------------+
|ATTRIBUTE TYPE | ATTRIBUTE VALUE |
+---------------+------------------+
|Availability | runtime/erlang |
+---------------+------------------+
|Stability | Uncommitted |
+---------------+------------------+
SEE ALSO
erl(1), compile(3), yecc(3), snmp(3)
NOTES
This software was built from source available at
https://java.net/projects/solaris-userland. The original
community source was downloaded from
http://www.erlang.org/download/otp_src_R15B03-1.tar.gz
Further information about this software can be found on the
open source community website at http://www.erlang.org/.
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