This bug caused c_function_prototypes to not be recorded at configure
time when compiling with -std=gnu99 or similar. In the case of feature
recording, that was not a problem, because the logic in
CMakeDetermineCompileFeatures.cmake currently assumes that a feature
present for an earlier standard is present for a later standard.
However, the detection strings are also used in WriteCompilerDetectionHeader,
so the feature macro has been defined to '0' when using a later language
dialect.
Fix that by not checking the existence of the __STDC_VERSION__ macro at
all when detecting C90 features.
If no compiler feature information is known for a given compiler
version, do not set a language standard default either. The two
settings must be recorded consistently.
The CMAKE_<LANG>_STANDARD_DEFAULT variable indicates whether the
compiler has any notion of standard levels and that CMake knows
about them. If no language standard levels are available, skip
all logic to attempt to add a flag for the level.
Also fail with an internal error if a bad default value is set.
When staging the package installation, if the first file in a directory
happens to be a symbolic link, make sure we create the directory before
trying to create the link.
When staging the package installation, if the first file in a directory
happens to be a symbolic link, make sure we create the directory before
trying to create the link.
The "/showIncludes" flag is only available with MS C and C++ compilers,
and on compilers that "simulate" them (like Intel for Windows). Fix our
logic to choose this type only for MS tools with these languages. All
other cases need to use "deps = gcc" and define DEP_FILE in the build
rule.
Define an empty string in CMAKE_<LANG>_STANDARD_DEFAULT to mean that
the toolchain has no notion of lanuage standard levels. In this case
the <LANG>_STANDARD[_REQUIRED] properties will have no effect.
Update the RunCMake.CompileFeatures test to exclude the
LinkImplementationFeatureCycle test when there is no standard default.
It can never fail because no use of specific features will adjust the
CXX_STANDARD level required for any target since the standard levels
have no meaning in this case.
Otherwise building such projects gives:
warning APPX1901: The DefaultLanguage property is either missing from
the project file or does not have a value
ab9fa54d Xcode: Switch to internal CMAKE_MAKE_PROGRAM lookup by generator (#15324)
11e2e6ca Xcode: Select make program at build time
e4055a61 Xcode: Add internal API to find xcodebuild
The "cmakexbuild" wrapper is not needed for Xcode 4 and above, and the
path to it may change when CMake moves. Avoid storing a specific path
to a build program in CMakeCache.txt and instead compute the value for
CMAKE_MAKE_PROGRAM on demand. However, if a user does set the value
explicitly then honor it.
This does for Xcode what commit v3.0.0-rc1~260^2~4 (VS: Switch to
internal CMAKE_MAKE_PROGRAM lookup by generators, 2013-11-15) did for
Visual Studio generators.
Extend the change made in commit v3.0.0-rc1~260^2~16 (Teach
GenerateBuildCommand to find its own make program, 2013-11-13) to have
the Xcode generator pick between "xcodebuild" and CMake's own copy of
"cmakexbuild" at build time based on the version of Xcode.
Teach the Xcode generator to compute the location of this tool or the
cmakexbuild wrapper. Add internal APIs to get the locations on demand.
Use the "cmakexbuild" wrapper for Xcode < 4, and "xcodebuild" for modern
Xcode.
The "No rule to make target" error message of gmake is not correctly
recognized since GNU make changed the quoting style in commit 23c2b99e9d
(Convert all "`'" quotes to "''" per new GNU Coding Standard guidelines,
2012-03-04). Fix our regex to match both old and new quoting styles.
Custom command path normalization added in commit v3.1.0-rc1~471^2
(add_custom_command: Normalize OUTPUT and DEPENDS paths, 2014-05-28)
broke use of OBJECT_DEPENDS to bring in custom commands because the
latter paths were not normalized too. Normalize them and add a test
case.
Reported-by: Daniel v. Gerpen
Stephen Kelly
Kitware Robot
Brad King
Bill Hoffman
Robert Maynard
Robert Goulet
Gregor Jasny
Marco Nolden
Guillaume Belz
Justin Borodinsky