they can be overridden when cross compiling.
Summary:
Since CROSS_TOOLCHAN_FLAGS can set CMAKE_(C|CXX)_COMPILER
variables, move the compiler variables up front so they can be
overridden.
This is a followup to https://reviews.llvm.org/D40229 committed in rL319620.
Thanks to Pavel Labath for reporting this issue.
Reviewers: labath, beanz
Subscribers: mgorny, llvm-commits
Differential Revision: https://reviews.llvm.org/D40896
llvm-svn: 319898
Also pass CMAKE_(C|CXX)_COMPILER to add_custom_command.
Summary:
Remove the redundant, config-time call to cmake when
building host tools for cross compiles or optimized tablegen..
The config-time call to cmake is redundant because it will always get
called again when the CONFIGURE_LLVM_${target_name} target fires at
build-time. This speeds up initial configuration, but has no affect
on build behavior.
Differential Revision: https://reviews.llvm.org/D40229
llvm-svn: 319620
Only pass Native to LLVM_TARGETS_TO_BUILD.
Summary:
Remove the redundant, config-time call to cmake when
building host tools for cross compiles or optimized tablegen..
The config-time call to cmake is redundant because it will always get
called again when the CONFIGURE_LLVM_${target_name} target fires at
build-time. This speeds up initial configuration, but has no affect
on build behavior.
Differential Revision: https://reviews.llvm.org/D40229
llvm-svn: 319574
Summary:
Remove the redundant, config-time call to cmake when
building host tools for cross compiles or optimized tablegen..
The config-time call to cmake is redundant because it will always get
called again when the CONFIGURE_LLVM_${target_name} target fires at
build-time. This speeds up initial configuration, but has no affect
on build behavior.
Reviewers: beanz
Reviewed By: beanz
Subscribers: mgorny, llvm-commits
Differential Revision: https://reviews.llvm.org/D40229
llvm-svn: 319176
CMake does a poor job in tracking dependencies on files and directories
directly. Create custom target similar to the configuration step.
On my system, this avoids the reconfiguration on each build.
Differential Revision: https://reviews.llvm.org/D39298
llvm-svn: 317694
Summary:
Cross-compilation uses recursive cmake invocations to build native host
tools. These recursive invocations only forward a fixed set of
variables/options, since the native environment is generally the default.
This change adds -DLLVM_TARGET_IS_CROSSCOMPILE_HOST=TRUE to the recursive
cmake invocations, so that cmake files can distinguish these recursive
invocations from top-level ones, which can explain why expected options
are unset.
LLILC will use this to avoid trying to generate its build rules in the
crosscompile native host target (where it is not needed), which would fail
if attempted because LLILC requires a cmake variable passed on the command
line, which is not forwarded in the recursive invocation.
Reviewers: rnk, beanz
Subscribers: llvm-commits
Differential Revision: http://reviews.llvm.org/D12679
llvm-svn: 247151
* put most of the cross-compiling support into a function llvm_create_cross_target_internal.
* when CrossCompile is included it still generates a NATIVE target.
* llvm_create_cross_target function takes a target_name which should match a toolchain.
* llvm_create_cross_target can now be used to target more than one cross-compilation target.
llvm-svn: 232067
The basic idea is similar to the existing cross compilation support. A directory must be configured to build host versions of tablegen tools and llvm-config. This directory can be user provided (and configured), or it can be created during the build. During a build the native build directory will be configured and built to supply the tablegen tools used during the build. A user could also explicitly provide the tablegen executables to run on the CMake command line.
llvm-svn: 217105
Don Hinton