doc/makefile-variables.txt
author Mike Sullivan <Mike.Sullivan@Oracle.COM>
Wed, 16 Oct 2013 10:00:08 -0700
changeset 1512 f57514e19ede
parent 1258 43768f8c79d5
child 1907 446472de62e9
permissions -rw-r--r--
17596443 nm -p output change breaks userland 17361780 LD_Z_TEXT should, ya know, contain -z text not -z direct 17602195 elf_wrong_location_check could be better
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
1245
b95e96615c0c 16577372 Userland Makefile variables should be less magical
John Beck <John.Beck@Oracle.COM>
parents:
diff changeset
     1
This is a guide to explain various useful variables in Userland component
b95e96615c0c 16577372 Userland Makefile variables should be less magical
John Beck <John.Beck@Oracle.COM>
parents:
diff changeset
     2
Makefiles.  To distinguish these from the Makefile(s) that are part of each
b95e96615c0c 16577372 Userland Makefile variables should be less magical
John Beck <John.Beck@Oracle.COM>
parents:
diff changeset
     3
component distribution, the latter will be referred to as native Makefiles.
b95e96615c0c 16577372 Userland Makefile variables should be less magical
John Beck <John.Beck@Oracle.COM>
parents:
diff changeset
     4
b95e96615c0c 16577372 Userland Makefile variables should be less magical
John Beck <John.Beck@Oracle.COM>
parents:
diff changeset
     5
The following are the basics that just about every Makefile should have.
b95e96615c0c 16577372 Userland Makefile variables should be less magical
John Beck <John.Beck@Oracle.COM>
parents:
diff changeset
     6
* COMPONENT_NAME is typically a short name (e.g., vim).
b95e96615c0c 16577372 Userland Makefile variables should be less magical
John Beck <John.Beck@Oracle.COM>
parents:
diff changeset
     7
* COMPONENT_VERSION is typically numbers separated by dots (e.g. 7.3).
b95e96615c0c 16577372 Userland Makefile variables should be less magical
John Beck <John.Beck@Oracle.COM>
parents:
diff changeset
     8
* COMPONENT_SRC is where the archive is extracted.  A common value for this is
b95e96615c0c 16577372 Userland Makefile variables should be less magical
John Beck <John.Beck@Oracle.COM>
parents:
diff changeset
     9
  "$(COMPONENT_NAME)-$(COMPONENT_VERSION)".
b95e96615c0c 16577372 Userland Makefile variables should be less magical
John Beck <John.Beck@Oracle.COM>
parents:
diff changeset
    10
* COMPONENT_PROJECT_URL is the general web site for the component.
b95e96615c0c 16577372 Userland Makefile variables should be less magical
John Beck <John.Beck@Oracle.COM>
parents:
diff changeset
    11
* COMPONENT_ARCHIVE is the base name of the archive to be downloaded.  A common
b95e96615c0c 16577372 Userland Makefile variables should be less magical
John Beck <John.Beck@Oracle.COM>
parents:
diff changeset
    12
  value for this is "$(COMPONENT_SRC).tar.gz".
b95e96615c0c 16577372 Userland Makefile variables should be less magical
John Beck <John.Beck@Oracle.COM>
parents:
diff changeset
    13
* COMPONENT_ARCHIVE_HASH is typically "sha256:" followed by the first output
b95e96615c0c 16577372 Userland Makefile variables should be less magical
John Beck <John.Beck@Oracle.COM>
parents:
diff changeset
    14
  field of `sha256sum $(COMPONENT_ARCHIVE)`.
b95e96615c0c 16577372 Userland Makefile variables should be less magical
John Beck <John.Beck@Oracle.COM>
parents:
diff changeset
    15
* COMPONENT_ARCHIVE_URL is where the archive can be downloaded from.  This is
b95e96615c0c 16577372 Userland Makefile variables should be less magical
John Beck <John.Beck@Oracle.COM>
parents:
diff changeset
    16
  typically constructed from $(COMPONENT_PROJECT_URL) and $(COMPONENT_ARCHIVE).
b95e96615c0c 16577372 Userland Makefile variables should be less magical
John Beck <John.Beck@Oracle.COM>
parents:
diff changeset
    17
* COMPONENT_BUGDB is the lower-case rendering of the BugDB cat/subcat.
b95e96615c0c 16577372 Userland Makefile variables should be less magical
John Beck <John.Beck@Oracle.COM>
parents:
diff changeset
    18
b95e96615c0c 16577372 Userland Makefile variables should be less magical
John Beck <John.Beck@Oracle.COM>
parents:
diff changeset
    19
These two are both initialized in make-rules/shared-macros.mk rather than any
b95e96615c0c 16577372 Userland Makefile variables should be less magical
John Beck <John.Beck@Oracle.COM>
parents:
diff changeset
    20
component-level Makefile, but are frequently referenced from the latter.
b95e96615c0c 16577372 Userland Makefile variables should be less magical
John Beck <John.Beck@Oracle.COM>
parents:
diff changeset
    21
* COMPONENT_DIR is the top-level directory of the given component in question.
b95e96615c0c 16577372 Userland Makefile variables should be less magical
John Beck <John.Beck@Oracle.COM>
parents:
diff changeset
    22
* SOURCE_DIR is set to $(COMPONENT_DIR)/$(COMPONENT_SRC).
b95e96615c0c 16577372 Userland Makefile variables should be less magical
John Beck <John.Beck@Oracle.COM>
parents:
diff changeset
    23
b95e96615c0c 16577372 Userland Makefile variables should be less magical
John Beck <John.Beck@Oracle.COM>
parents:
diff changeset
    24
Additional pre/post configure, build, or install actions can be specified in
b95e96615c0c 16577372 Userland Makefile variables should be less magical
John Beck <John.Beck@Oracle.COM>
parents:
diff changeset
    25
a component Makefile by setting them in one of the following macros.  None of
b95e96615c0c 16577372 Userland Makefile variables should be less magical
John Beck <John.Beck@Oracle.COM>
parents:
diff changeset
    26
these have default values.  These are mostly used for miscellaneous set-up or
b95e96615c0c 16577372 Userland Makefile variables should be less magical
John Beck <John.Beck@Oracle.COM>
parents:
diff changeset
    27
clean-up tweaks as their names suggest.
b95e96615c0c 16577372 Userland Makefile variables should be less magical
John Beck <John.Beck@Oracle.COM>
parents:
diff changeset
    28
* COMPONENT_PRE_CONFIGURE_ACTION is used by several components to clone a
b95e96615c0c 16577372 Userland Makefile variables should be less magical
John Beck <John.Beck@Oracle.COM>
parents:
diff changeset
    29
  source directory.
b95e96615c0c 16577372 Userland Makefile variables should be less magical
John Beck <John.Beck@Oracle.COM>
parents:
diff changeset
    30
* COMPONENT_POST_CONFIGURE_ACTION
b95e96615c0c 16577372 Userland Makefile variables should be less magical
John Beck <John.Beck@Oracle.COM>
parents:
diff changeset
    31
* COMPONENT_PRE_BUILD_ACTION
b95e96615c0c 16577372 Userland Makefile variables should be less magical
John Beck <John.Beck@Oracle.COM>
parents:
diff changeset
    32
* COMPONENT_POST_BUILD_ACTION
b95e96615c0c 16577372 Userland Makefile variables should be less magical
John Beck <John.Beck@Oracle.COM>
parents:
diff changeset
    33
* COMPONENT_PRE_INSTALL_ACTION
b95e96615c0c 16577372 Userland Makefile variables should be less magical
John Beck <John.Beck@Oracle.COM>
parents:
diff changeset
    34
* COMPONENT_POST_INSTALL_ACTION
b95e96615c0c 16577372 Userland Makefile variables should be less magical
John Beck <John.Beck@Oracle.COM>
parents:
diff changeset
    35
* COMPONENT_PRE_TEST_ACTION
b95e96615c0c 16577372 Userland Makefile variables should be less magical
John Beck <John.Beck@Oracle.COM>
parents:
diff changeset
    36
* COMPONENT_POST_TEST_ACTION
b95e96615c0c 16577372 Userland Makefile variables should be less magical
John Beck <John.Beck@Oracle.COM>
parents:
diff changeset
    37
b95e96615c0c 16577372 Userland Makefile variables should be less magical
John Beck <John.Beck@Oracle.COM>
parents:
diff changeset
    38
If component specific make targets need to be used for build or install or
b95e96615c0c 16577372 Userland Makefile variables should be less magical
John Beck <John.Beck@Oracle.COM>
parents:
diff changeset
    39
test, they can be specified via the following.
b95e96615c0c 16577372 Userland Makefile variables should be less magical
John Beck <John.Beck@Oracle.COM>
parents:
diff changeset
    40
* COMPONENT_BUILD_TARGETS is not usually set because the default target of most
b95e96615c0c 16577372 Userland Makefile variables should be less magical
John Beck <John.Beck@Oracle.COM>
parents:
diff changeset
    41
  open source software is the equivalent of a 'build' target.  This needs to be
b95e96615c0c 16577372 Userland Makefile variables should be less magical
John Beck <John.Beck@Oracle.COM>
parents:
diff changeset
    42
  set when building the software requires a different target than the default.
b95e96615c0c 16577372 Userland Makefile variables should be less magical
John Beck <John.Beck@Oracle.COM>
parents:
diff changeset
    43
  You should not override make macros here, but in COMPONENT_BUILD_ARGS.
b95e96615c0c 16577372 Userland Makefile variables should be less magical
John Beck <John.Beck@Oracle.COM>
parents:
diff changeset
    44
* COMPONENT_INSTALL_TARGETS has a default value of "install".  Very few
b95e96615c0c 16577372 Userland Makefile variables should be less magical
John Beck <John.Beck@Oracle.COM>
parents:
diff changeset
    45
  components need to alter this.
b95e96615c0c 16577372 Userland Makefile variables should be less magical
John Beck <John.Beck@Oracle.COM>
parents:
diff changeset
    46
* COMPONENT_TEST_TARGETS has a default value of "check".  Several components
b95e96615c0c 16577372 Userland Makefile variables should be less magical
John Beck <John.Beck@Oracle.COM>
parents:
diff changeset
    47
  need to set this to "test".
b95e96615c0c 16577372 Userland Makefile variables should be less magical
John Beck <John.Beck@Oracle.COM>
parents:
diff changeset
    48
b95e96615c0c 16577372 Userland Makefile variables should be less magical
John Beck <John.Beck@Oracle.COM>
parents:
diff changeset
    49
* COMPONENT_BUILD_ARGS is probably the mostly useful variable here for solving
b95e96615c0c 16577372 Userland Makefile variables should be less magical
John Beck <John.Beck@Oracle.COM>
parents:
diff changeset
    50
  subtle build issues.  When you need to override a MACRO set in the native
b95e96615c0c 16577372 Userland Makefile variables should be less magical
John Beck <John.Beck@Oracle.COM>
parents:
diff changeset
    51
  Makefile of a component, do so by adding something like:
b95e96615c0c 16577372 Userland Makefile variables should be less magical
John Beck <John.Beck@Oracle.COM>
parents:
diff changeset
    52
     COMPONENT_BUILD_ARGS += MKDIR="$(MKDIR)"
b95e96615c0c 16577372 Userland Makefile variables should be less magical
John Beck <John.Beck@Oracle.COM>
parents:
diff changeset
    53
  Quoting is often important because values with white-space can be split up,
b95e96615c0c 16577372 Userland Makefile variables should be less magical
John Beck <John.Beck@Oracle.COM>
parents:
diff changeset
    54
  yielding the wrong results.
b95e96615c0c 16577372 Userland Makefile variables should be less magical
John Beck <John.Beck@Oracle.COM>
parents:
diff changeset
    55
* COMPONENT_BUILD_ENV is for when you just need to override things in the
b95e96615c0c 16577372 Userland Makefile variables should be less magical
John Beck <John.Beck@Oracle.COM>
parents:
diff changeset
    56
  calling environment, like PATH.
b95e96615c0c 16577372 Userland Makefile variables should be less magical
John Beck <John.Beck@Oracle.COM>
parents:
diff changeset
    57
* COMPONENT_INSTALL_ARGS is mainly used for altering target directories.
b95e96615c0c 16577372 Userland Makefile variables should be less magical
John Beck <John.Beck@Oracle.COM>
parents:
diff changeset
    58
* COMPONENT_INSTALL_ENV is mainly used for altering target directories.
b95e96615c0c 16577372 Userland Makefile variables should be less magical
John Beck <John.Beck@Oracle.COM>
parents:
diff changeset
    59
* COMPONENT_TEST_ARGS is little used.
b95e96615c0c 16577372 Userland Makefile variables should be less magical
John Beck <John.Beck@Oracle.COM>
parents:
diff changeset
    60
* COMPONENT_TEST_ENV is mainly used for altering PATH and friends.
b95e96615c0c 16577372 Userland Makefile variables should be less magical
John Beck <John.Beck@Oracle.COM>
parents:
diff changeset
    61
b95e96615c0c 16577372 Userland Makefile variables should be less magical
John Beck <John.Beck@Oracle.COM>
parents:
diff changeset
    62
* COMPONENT_POST_UNPACK_ACTION is for making minor alterations to the unpacked
b95e96615c0c 16577372 Userland Makefile variables should be less magical
John Beck <John.Beck@Oracle.COM>
parents:
diff changeset
    63
  source directory before any patching has taken place.  It should almost never
b95e96615c0c 16577372 Userland Makefile variables should be less magical
John Beck <John.Beck@Oracle.COM>
parents:
diff changeset
    64
  be used.
b95e96615c0c 16577372 Userland Makefile variables should be less magical
John Beck <John.Beck@Oracle.COM>
parents:
diff changeset
    65
* COMPONENT_PREP_ACTION is used to make alterations to the unpacked and patched
b95e96615c0c 16577372 Userland Makefile variables should be less magical
John Beck <John.Beck@Oracle.COM>
parents:
diff changeset
    66
  source.  It should be used with care.
b95e96615c0c 16577372 Userland Makefile variables should be less magical
John Beck <John.Beck@Oracle.COM>
parents:
diff changeset
    67
b95e96615c0c 16577372 Userland Makefile variables should be less magical
John Beck <John.Beck@Oracle.COM>
parents:
diff changeset
    68
* CONFIGURE_DEFAULT_DIRS should be "yes" or "no".  A value of "yes" (the
b95e96615c0c 16577372 Userland Makefile variables should be less magical
John Beck <John.Beck@Oracle.COM>
parents:
diff changeset
    69
  default) will trigger the following being passed to CONFIGURE_OPTIONS as
b95e96615c0c 16577372 Userland Makefile variables should be less magical
John Beck <John.Beck@Oracle.COM>
parents:
diff changeset
    70
  parameters to corresponding options.
b95e96615c0c 16577372 Userland Makefile variables should be less magical
John Beck <John.Beck@Oracle.COM>
parents:
diff changeset
    71
  * CONFIGURE_BINDIR is the value for the --bindir= option.
b95e96615c0c 16577372 Userland Makefile variables should be less magical
John Beck <John.Beck@Oracle.COM>
parents:
diff changeset
    72
  * CONFIGURE_LIBDIR is the value for the --libdir= option.
b95e96615c0c 16577372 Userland Makefile variables should be less magical
John Beck <John.Beck@Oracle.COM>
parents:
diff changeset
    73
  * CONFIGURE_MANDIR is the value for the --mandir= option.
b95e96615c0c 16577372 Userland Makefile variables should be less magical
John Beck <John.Beck@Oracle.COM>
parents:
diff changeset
    74
  * CONFIGURE_SBINDIR is the value for the --sbindir= option.
b95e96615c0c 16577372 Userland Makefile variables should be less magical
John Beck <John.Beck@Oracle.COM>
parents:
diff changeset
    75
* CONFIGURE_ENV is mainly used for passing CFLAGS and other common Makefile
b95e96615c0c 16577372 Userland Makefile variables should be less magical
John Beck <John.Beck@Oracle.COM>
parents:
diff changeset
    76
  variables to configure.  When should this be used as opposed to
b95e96615c0c 16577372 Userland Makefile variables should be less magical
John Beck <John.Beck@Oracle.COM>
parents:
diff changeset
    77
  CONFIGURE_OPTIONS and COMPONENT_BUILD_{ARGS,ENV}?  In general, you want
b95e96615c0c 16577372 Userland Makefile variables should be less magical
John Beck <John.Beck@Oracle.COM>
parents:
diff changeset
    78
  to tell configure how to build the software using CONFIGURE_OPTIONS.  But
b95e96615c0c 16577372 Userland Makefile variables should be less magical
John Beck <John.Beck@Oracle.COM>
parents:
diff changeset
    79
  sometimes you need to pass values in via the calling environment.  On rare
b95e96615c0c 16577372 Userland Makefile variables should be less magical
John Beck <John.Beck@Oracle.COM>
parents:
diff changeset
    80
  occasions, you still need to do things like override MACRO settings in the
b95e96615c0c 16577372 Userland Makefile variables should be less magical
John Beck <John.Beck@Oracle.COM>
parents:
diff changeset
    81
  generated Makefiles with COMPONENT_BUILD_ARGS.
b95e96615c0c 16577372 Userland Makefile variables should be less magical
John Beck <John.Beck@Oracle.COM>
parents:
diff changeset
    82
* CONFIGURE_LOCALEDIR is a cousin of the other *DIR variables above, but
b95e96615c0c 16577372 Userland Makefile variables should be less magical
John Beck <John.Beck@Oracle.COM>
parents:
diff changeset
    83
  rarely used and hence not triggered by CONFIGURE_DEFAULT_DIRS.
b95e96615c0c 16577372 Userland Makefile variables should be less magical
John Beck <John.Beck@Oracle.COM>
parents:
diff changeset
    84
* CONFIGURE_OPTIONS is extremely useful, possibly our most used "add-on"
b95e96615c0c 16577372 Userland Makefile variables should be less magical
John Beck <John.Beck@Oracle.COM>
parents:
diff changeset
    85
  variable, for passing various options to configure.  These tend to vary per
b95e96615c0c 16577372 Userland Makefile variables should be less magical
John Beck <John.Beck@Oracle.COM>
parents:
diff changeset
    86
  component, but --enable-foo and --disable-foo for various values of foo are
b95e96615c0c 16577372 Userland Makefile variables should be less magical
John Beck <John.Beck@Oracle.COM>
parents:
diff changeset
    87
  quite common.
b95e96615c0c 16577372 Userland Makefile variables should be less magical
John Beck <John.Beck@Oracle.COM>
parents:
diff changeset
    88
* CONFIGURE_PREFIX is the prefix for the various *DIR variables above.  Its
b95e96615c0c 16577372 Userland Makefile variables should be less magical
John Beck <John.Beck@Oracle.COM>
parents:
diff changeset
    89
  default is "/usr"; set it if some other value (e.g., "/usr/gnu") is needed.
b95e96615c0c 16577372 Userland Makefile variables should be less magical
John Beck <John.Beck@Oracle.COM>
parents:
diff changeset
    90
* CONFIGURE_SCRIPT should be set if the default "$(SOURCE_DIR)/configure" is
b95e96615c0c 16577372 Userland Makefile variables should be less magical
John Beck <John.Beck@Oracle.COM>
parents:
diff changeset
    91
  unsuitable for whatever reason.
1258
43768f8c79d5 16624973 document studio_OPT in doc/makefile-variables.txt
John Beck <John.Beck@Oracle.COM>
parents: 1245
diff changeset
    92
43768f8c79d5 16624973 document studio_OPT in doc/makefile-variables.txt
John Beck <John.Beck@Oracle.COM>
parents: 1245
diff changeset
    93
* studio_OPT has a default value of "-xO4".  Occasional bugs in the optimizer
43768f8c79d5 16624973 document studio_OPT in doc/makefile-variables.txt
John Beck <John.Beck@Oracle.COM>
parents: 1245
diff changeset
    94
  have been found which have required altering this to "-xO3".  There are also
43768f8c79d5 16624973 document studio_OPT in doc/makefile-variables.txt
John Beck <John.Beck@Oracle.COM>
parents: 1245
diff changeset
    95
  studio_OPT.$(MACH).$(BITS) versions of this available if greater specificity
43768f8c79d5 16624973 document studio_OPT in doc/makefile-variables.txt
John Beck <John.Beck@Oracle.COM>
parents: 1245
diff changeset
    96
  is needed.