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CMake: New user-settable variable LLVM_TARGET_ARCH useful when

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cross-compiling.

Patch by Xerxes Rånby!

llvm-svn: 81722
This commit is contained in:
Oscar Fuentes 2009-09-13 22:18:38 +00:00
parent d89dea7a2e
commit 8edea46b44
3 changed files with 22 additions and 4 deletions
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3
CMakeLists.txt
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@ -70,6 +70,9 @@ else( MSVC )
CACHE STRING "Semicolon-separated list of targets to build, or \"all\".")
endif( MSVC )
set(LLVM_TARGET_ARCH "host"
CACHE STRING "Set target to use for LLVM JIT or use \"host\" for automatic detection.")
option(LLVM_ENABLE_THREADS "Use threads if available." ON)
if( uppercase_CMAKE_BUILD_TYPE STREQUAL "RELEASE" )

13
cmake/config-ix.cmake
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@ -92,13 +92,18 @@ get_target_triple(LLVM_HOSTTRIPLE)
message(STATUS "LLVM_HOSTTRIPLE: ${LLVM_HOSTTRIPLE}")
# Determine the native architecture.
# FIXME: this will have to change for cross-compiling.
string(REGEX MATCH "^[^-]*" LLVM_NATIVE_ARCH ${LLVM_HOSTTRIPLE})
string(TOLOWER "${LLVM_TARGET_ARCH}" LLVM_NATIVE_ARCH)
if( LLVM_NATIVE_ARCH STREQUAL "host" )
string(REGEX MATCH "^[^-]*" LLVM_NATIVE_ARCH ${LLVM_HOSTTRIPLE})
endif ()
if (LLVM_NATIVE_ARCH MATCHES "i[2-6]86")
set(LLVM_NATIVE_ARCH X86)
elseif (LLVM_NATIVE_ARCH STREQUAL amd64)
elseif (LLVM_NATIVE_ARCH STREQUAL "x86")
set(LLVM_NATIVE_ARCH X86)
elseif (LLVM_NATIVE_ARCH STREQUAL x86_64)
elseif (LLVM_NATIVE_ARCH STREQUAL "amd64")
set(LLVM_NATIVE_ARCH X86)
elseif (LLVM_NATIVE_ARCH STREQUAL "x86_64")
set(LLVM_NATIVE_ARCH X86)
elseif (LLVM_NATIVE_ARCH MATCHES "sparc")
set(LLVM_NATIVE_ARCH Sparc)

10
docs/CMake.html
View File

@ -273,6 +273,13 @@
option is available only on some 64-bits unix systems. Defaults to
OFF.</dd>
<dt><b>LLVM_TARGET_ARCH</b>:STRING</dt>
<dd>LLVM target to use for native code generation. This is required
for JIT generation. It defaults to "host", meaning that it shall
pick the architecture of the machine where LLVM is being built. If
you are cross-compiling, set it to the target architecture
name.</dd>
<dt><b>LLVM_TABLEGEN</b>:STRING</dt>
<dd>Full path to a native TableGen executable (usually
named <i>tblgen</i>). This is intented for cross-compiling: if the
@ -311,6 +318,9 @@
<a href="http://www.vtk.org/Wiki/CMake_Cross_Compiling#Information_how_to_set_up_various_cross_compiling_toolchains">this
section</a> for a quick solution.</p>
<p>Also see the <a href="#llvmvars">LLVM-specific variables</a>
section for variables used when cross-compiling.</p>
</div>
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