-INSTALL - CUPS v2.2.4 - 2017-05-01
+INSTALL - CUPS v2.3.0 - 2019-05-24
==================================
This file describes how to compile and install CUPS from source code. For more
-information on CUPS see the file called "README.txt". A complete change log can
-be found in "CHANGES.txt".
+information on CUPS see the file called "README.md". A complete change log can
+be found in "CHANGES.md".
-> USING CUPS REQUIRES ADDITIONAL THIRD-PARTY SUPPORT SOFTWARE AND PRINTER
-> DRIVERS. THESE ARE TYPICALLY INCLUDED WITH YOUR OPERATING SYSTEM
-> DISTRIBUTION. APPLE DOES NOT ENDORSE OR SUPPORT THIRD-PARTY SUPPORT SOFTWARE
-> FOR CUPS.
+Using CUPS requires additional third-party support software and printer drivers.
+These are typically included with your operating system distribution. Apple
+does not endorse or support third-party support software for CUPS.
+
+> Note: Current versions of macOS DO NOT allow installation to /usr with the
+> default System Integrity Protection (SIP) settings. In addition, we do not
+> recommend replacing the CUPS supplied with macOS because:
+>
+> a. not all versions of CUPS are compatible with every macOS release,
+>
+> b. code signing prevents replacement of system libraries and access to the
+> system keychain (needed for encrypted printer sharing), and
+>
+> c. software updates will often replace parts of your local installation,
+> potentially rendering your system unusable.
+>
+> Apple only supports using the Clang supplied with Xcode to build CUPS on
+> macOS.
BEFORE YOU BEGIN
The default installation will put the CUPS software in the "/etc", "/usr", and
"/var" directories on your system, which will overwrite any existing printing
-commands on your system. Use the "--prefix" option to install the CUPS software
+commands on your system. Use the `--prefix` option to install the CUPS software
in another location:
./configure --prefix=/some/directory
-To see a complete list of configuration options, use the --help option:
+> Note: Current versions of macOS DO NOT allow installation to /usr with the
+> default System Integrity Protection (SIP) settings.
+
+To see a complete list of configuration options, use the `--help` option:
./configure --help
LDFLAGS="-L/some/directory" \
./configure ...
-The "--enable-debug" option compiles CUPS with debugging information enabled.
+The `--enable-debug` option compiles CUPS with debugging information enabled.
Additional debug logging support can be enabled using the
-"--enable-debug-printfs" option - these debug messages are enabled using the
-CUPS_DEBUG_LOG environment variable at run-time.
+`--enable-debug-printfs` option - these debug messages are enabled using the
+`CUPS_DEBUG_xxx` environment variables at run-time.
CUPS also includes an extensive set of unit tests that can be used to find and
diagnose a variety of common problems - use the "--enable-unit-tests" configure
option to run them at build time.
-On macOS, use the "--with-archflags" option to build with the correct set of
+On macOS, use the `--with-archflags` option to build with the correct set of
architectures:
./configure --with-archflags="-arch i386 -arch x86_64" ...
-> Note: Current versions of macOS DO NOT allow installation to /usr with the
-> default system integrity settings. In addition, we do not recommend replacing
-> the CUPS supplied with macOS because not all versions of CUPS are compatible
-> with every macOS release, and because software updates will replace parts
-> of your local installation potentially rendering your system unusable.
-
Once you have configured things, just type:
make ENTER
GETTING DEBUG LOGGING FROM CUPS
-------------------------------
-When configured with the "--enable-debug-printfs" option, CUPS compiles in
+When configured with the `--enable-debug-printfs` option, CUPS compiles in
additional debug logging support in the scheduler, CUPS API, and CUPS Imaging
API. The following environment variables are used to enable and control debug
logging:
the logging. The default level is 1.
- `CUPS_DEBUG_LOG`: Specifies a log file to use. Specify the name "-" to send
the messages to stderr. Prefix a filename with "+" to append to an existing
- file.
+ file. You can include a single "%d" in the filename to embed the current
+ process ID.
REPORTING PROBLEMS
------------------
-If you have problems, READ THE DOCUMENTATION FIRST! If the documentation does
+If you have problems, *read the documentation first*! If the documentation does
not solve your problems, please post a message on the users forum at:
https://www.cups.org/
projects / thirdparty / cups.git / blobdiff