Commit Graph

79 Commits

Author SHA1 Message Date
Brad King cb185d93d2 Fix if() command and CMP0012 OLD/NEW behavior
The commit "modified the if command to address bug 9123 some" changed
the if() command behavior with respect to named boolean constants.  It
introduced policy CMP0012 to provide compatibility.  However, it also
changed behavior with respect to numbers (like '2') but did not cover
the change with the policy.  Also, the behavior it created for numbers
is confusing ('2' is false).

This commit teaches if() to recognize numbers again, and treats them
like the C language does in terms of boolean conversion.  We also fix
the CMP0012 check to trigger in all cases where the result of boolean
coersion differs from that produced by CMake 2.6.4.
2009-10-27 09:07:39 -04:00
Brad King 9a77f65da7 Remove CMake Policy CMP0015 until it is revised
We revert commit "Create CMake Policy CMP0015 to fix set(CACHE)" because
the NEW behavior of the policy breaks a valid use case:

  # CMakeLists.txt
  option(BUILD_SHARED_LIBS "..." ON)
  add_library(mylib ...)
  set(BUILD_SHARED_LIBS OFF) # we want only mylib to be shared
  add_subdirectory(ThirdParty)

  # ThirdParty/CMakeLists.txt
  option(BUILD_SHARED_LIBS "..." ON)
  # uh, oh, with NEW behavior this dir uses shared libs!!!

We'll re-introduce the policy later with a different change in behavior
to resolve the motivating case, which was more subtle but less common.

See issue #9008.
2009-10-08 14:56:15 -04:00
Brad King 96afb12087 Convert CMake to OSI-approved BSD License
This converts the CMake license to a pure 3-clause OSI-approved BSD
License.  We drop the previous license clause requiring modified
versions to be plainly marked.  We also update the CMake copyright to
cover the full development time range.
2009-09-28 11:43:28 -04:00
Brad King ee2b446c95 Create CMake Policy CMP0015 to fix set(CACHE)
The set(CACHE) and option() commands should always expose the cache
value.  Previously we failed to expose the value when it was already set
if a local variable definition hid it.  When set to NEW, this policy
tells the commands to always remove the local variable definition to
expose the cache value.  See issue #9008.
2009-09-10 16:59:45 -04:00
Brad King e308621382 Create CMP0014 to require CMakeLists.txt files
Until now CMake accidentally accepted add_subdirectory() and subdirs()
calls referring to directories that do not contain a CMakeLists.txt
file.  We introduce CMake Policy CMP0014 to make this case an error.
2009-09-03 08:27:12 -04:00
Brad King c790b1fabb ENH: Create CMP0013 to disallow duplicate dirs
In CMake 2.6.3 and below we silently accepted duplicate build
directories whose build files would then conflict.  At first this was
considured purely a bug that confused beginners but would not be used in
a real project.  In CMake 2.6.4 we explicitly made it an error.

However, some real projects took advantage of this as a "feature" and
got lucky that the subtle build errors it can cause did not occur.
Therefore we need a policy to deal with the case more gracefully.
See issue #9173.
2009-06-17 13:40:09 -04:00
Ken Martin a73071ca17 ENH: modified the if command to address bug 9123 some 2009-06-12 10:07:05 -04:00
Bill Hoffman 29ba1aa77a ENH: try to fix vs6 build 2009-01-23 12:20:09 -05:00
Brad King c332e0bf3c ENH: Isolate policy changes in included scripts
Isolation of policy changes inside scripts is important for protecting
the including context.  This teaches include() and find_package() to
imply a cmake_policy(PUSH) and cmake_policy(POP) around the scripts they
load, with a NO_POLICY_SCOPE option to disable the behavior.  This also
creates CMake Policy CMP0011 to provide compatibility.  See issue #8192.
2009-01-22 13:18:40 -05:00
Brad King 8997f4760a ENH: Refactor policy stack representation
This defines PolicyMap as a public member of cmPolicies.  Its previous
role as a policy stack entry is now called PolicyStackEntry and
represented as a class to which more information can be added later.
2009-01-22 10:56:39 -05:00
Brad King d524f3675e ENH: Improve argument parsing error messages
Previously error messages produced by parsing of command argument
variable references, such as bad $KEY{VAR} syntax or a bad escape
sequence, did not provide good context information.  Errors parsing
arguments inside macro invocations gave no context at all.  Furthermore,
some errors such as a missing close curly "${VAR" would be reported but
build files would still be generated.

These changes teach CMake to report errors with good context information
for all command argument parsing problems.  Policy CMP0010 is introduced
so that existing projects that built despite such errors will continue
to work.
2008-09-24 08:51:19 -04:00
David Cole bd1935dcd1 ENH: Improve FILE GLOB_RECURSE handling of symlinks with a new CMake policy. CMP0009 establishes NEW default behavior of not recursing through symlinks. OLD default behavior or explicit FOLLOW_SYMLINKS argument to FILE GLOB_RECURSE will still recurse through symlinks. 2008-09-11 14:34:04 -04:00
Brad King f50ed1fd88 ENH: Improve errors when a policy is REQUIRED
In the future some policies may be set to REQUIRED_IF_USED or
REQUIRED_ALWAYS.  This change clarifies the error messages users receive
when violating the requirements.
2008-08-18 16:29:00 -04:00
Brad King b93f0318fe ENH: Support full-path libs w/out valid names.
This change introduces policy CMP0008 to decide how to treat full path
libraries that do not appear to be valid library file names.  Such
libraries worked by accident in the VS IDE and Xcode generators with
CMake 2.4 and below.  We support them in CMake 2.6 by introducing this
policy.  See policy documentation added by this change for details.
2008-07-23 12:59:14 -04:00
Bill Hoffman 0a0672c01f ENH: fix list command with empty elements 2008-04-21 16:57:11 -04:00
Brad King 067717a56a BUG: Fix compatibility with CMake 2.4 for installation of MACOSX_BUNDLE targets
- Add policy CMP0006 to decide whether to use compatibility
  - OLD behavior is to fall back to RUNTIME rules
  - NEW behavior is to produce an error
2008-04-14 17:53:11 -04:00
Brad King 9a83ce6efc ENH: Add policy CMP0005 to decide whether add_definitions should escape defs. 2008-03-13 17:11:57 -04:00
Brad King bf4cef9d5c ENH: Add policy CMP_0004 to require library names to have no leading or trailing whitespace. Replace previous check of CMAKE_BACKWARDS_COMPATIBILITY against version 2.4 with the policy. 2008-03-13 16:35:39 -04:00
Brad King d46ff28ac9 ENH: Convert CMAKE_LINK_OLD_PATHS to policy CMP0003.
- Policy is WARN by default so projects will build
    as they did in 2.4 without user intervention
  - Remove CMAKE_LINK_OLD_PATHS variable since it was
    never in a release and the policy supercedes it
  - Report target creation backtrace in warning message
    since policy should be set by that point
2008-03-13 16:23:18 -04:00
Ken Martin 73df9a5cd4 ENH: change CMP_ to CMP 2008-03-13 11:38:46 -04:00
Brad King 46bf0347a3 ENH: Finish creating, documenting, and enforcing policy CMP_0002. 2008-03-07 16:36:57 -05:00
Brad King 5233b75a77 ENH: Improve handling of old-style compatibility.
- Remove CMP_0001 (no slash in target name) and restore
    old CMAKE_BACKWARDS_COMPATIBILITY check for it
  - Replace all checks of CMAKE_BACKWARDS_COMPATIBILITY
    with cmLocalGenerator::NeedBackwardsCompatibility calls
  - Create new CMP_0001 to determine whether or not
    CMAKE_BACKWARDS_COMPATIBILITY is used.
    (old = use, new = ignore)
  - Show CMAKE_BACKWARDS_COMPATIBILITY in cache only when
    CMP_0001 is set to OLD or WARN
  - Update documentation of cmake_policy and cmake_minimum_required
    to indicate their relationship and the 2.4 version boundary
  - When no cmake policy version is set in top level makefile
    implicitly call cmake_policy(VERSION 2.4) which restores
    CMAKE_BACKWARDS_COMPATIBILITY and other 2.4 compatibility
  - Fix tests MakeClean and Preprocess to call
    cmake_policy(VERSION 2.6) because they depend on new policies
2008-03-07 15:30:35 -05:00
Ken Martin f2c6e9e480 BUG: some fixes, still a few to go 2008-03-05 11:41:25 -05:00
Ken Martin d47a5951ed ENH: add --help-policies and --help-policy command line options 2008-03-04 09:16:33 -05:00
Ken Martin c9514dc0d1 COMP: possible fix for VS6, but probably not, probably need tomake it internal 2008-03-02 09:12:27 -05:00
Ken Martin 345af17586 ENH: revert dumb change 2008-03-02 09:03:33 -05:00
Ken Martin e0059c0db7 COMP: fix compile errors on vs6 and a warning 2008-03-02 08:36:18 -05:00
Ken Martin bd0447be7d STYLE: fix some line lengths 2008-03-01 15:26:15 -05:00
Ken Martin ab851bf36b ENH: just getting somethng checked in, still work to do 2008-02-29 15:28:46 -05:00