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| author | Sebastian Pop <spop@codeaurora.org> | 2012-08-20 19:56:52 +0000 |
|---|---|---|
| committer | Sebastian Pop <spop@codeaurora.org> | 2012-08-20 19:56:52 +0000 |
| commit | df2598871e07fe5eda960c5a461b55eced1e1657 (patch) | |
| tree | cc0a10fb74ad4560ed4a4035db80b393c2df318d | |
| parent | 974e12b376f21234e2262d65805791b9c36b356e (diff) | |
enable cross compilation with cmake
This patch allows us to use cmake to specify a cross compiler: target different
than host. In particular, it moves LLVM_DEFAULT_TARGET_TRIPLE and TARGET_TRIPLE
variables from cmake/config-ix.cmake to the toplevel CMakeLists.txt to make them
available at configure time.
Here is the command line that I have used to test my patches to create a Hexagon
cross compiler hosted on x86:
$ cmake -G Ninja -D LLVM_TARGETS_TO_BUILD:STRING=Hexagon -D TARGET_TRIPLE:STRING=hexagon-unknown-linux-gnu -D LLVM_DEFAULT_TARGET_TRIPLE:STRING=hexagon-unknown-linux-gnu -D LLVM_TARGET_ARCH:STRING=hexagon-unknown-linux-gnu ..
$ ninja check
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@162219 91177308-0d34-0410-b5e6-96231b3b80d8
| -rw-r--r-- | CMakeLists.txt | 8 | ||||
| -rwxr-xr-x | cmake/config-ix.cmake | 2 |
2 files changed, 8 insertions, 2 deletions
diff --git a/CMakeLists.txt b/CMakeLists.txt index fbf8e2bb90..df781f52cd 100644 --- a/CMakeLists.txt +++ b/CMakeLists.txt @@ -249,6 +249,14 @@ option(LLVM_INCLUDE_TESTS "Generate build targets for the LLVM unit tests." ON) # BEFORE this include, otherwise options will not be correctly set on # first cmake run include(config-ix) + +# By default, we target the host, but this can be overridden at CMake +# invocation time. +set(LLVM_DEFAULT_TARGET_TRIPLE "${LLVM_HOST_TRIPLE}" CACHE STRING + "Default target for which LLVM will generate code." ) +set(TARGET_TRIPLE "${LLVM_DEFAULT_TARGET_TRIPLE}" CACHE STRING + "Default target for which LLVM will generate code." ) + include(HandleLLVMOptions) # Verify that we can find a Python interpreter, diff --git a/cmake/config-ix.cmake b/cmake/config-ix.cmake index 1e72258d44..94cc5551c8 100755 --- a/cmake/config-ix.cmake +++ b/cmake/config-ix.cmake @@ -294,9 +294,7 @@ get_host_triple(LLVM_HOST_TRIPLE) # By default, we target the host, but this can be overridden at CMake # invocation time. -set(LLVM_DEFAULT_TARGET_TRIPLE "${LLVM_HOST_TRIPLE}") set(LLVM_HOSTTRIPLE "${LLVM_HOST_TRIPLE}") -set(TARGET_TRIPLE "${LLVM_DEFAULT_TARGET_TRIPLE}") # Determine the native architecture. string(TOLOWER "${LLVM_TARGET_ARCH}" LLVM_NATIVE_ARCH) |