package/llvm: add llvm RTTI option
Allow to build LLVM with run-time type information as this feature is needed (for example) by mesa3d's Gallium Nouveau driver or the Clover OpenCL state tracker when llvm support is enabled in mesa3d. While we only care about RTTI support in the target, we also need to enable it in the host LLVM, so that llvm-config gives the proper result. Signed-off-by: Romain Naour <romain.naour@gmail.com> Tested-by: Bernd Kuhls <bernd.kuhls@t-online.de> Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
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@ -35,6 +35,19 @@ config BR2_PACKAGE_LLVM_AMDGPU
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Build AMDGPU target. Select this option if you are going
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to install mesa3d with llvm and use Gallium Radeon driver.
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config BR2_PACKAGE_LLVM_RTTI
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bool "enable rtti"
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help
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Build LLVM with run-time type information. LLVM can be built
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without rtti, but turning it off changes the ABI of C++
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programs.
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This features is needed to build the Gallium Nouveau driver
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or the Clover OpenCL state tracker when llvm support is
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enabled.
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https://llvm.org/docs/HowToSetUpLLVMStyleRTTI.html
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endif
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comment "llvm needs a toolchain w/ wchar, threads, C++, gcc >= 4.8, host gcc >= 4.8, dynamic library"
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@ -219,6 +219,14 @@ LLVM_CONF_OPTS += \
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-DLLVM_INCLUDE_TOOLS=ON \
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-DLLVM_BUILD_TOOLS=OFF
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ifeq ($(BR2_PACKAGE_LLVM_RTTI),y)
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HOST_LLVM_CONF_OPTS += -DLLVM_ENABLE_RTTI=ON
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LLVM_CONF_OPTS += -DLLVM_ENABLE_RTTI=ON
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else
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HOST_LLVM_CONF_OPTS += -DLLVM_ENABLE_RTTI=OFF
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LLVM_CONF_OPTS += -DLLVM_ENABLE_RTTI=OFF
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endif
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# Compiler-rt not in the source tree.
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# llvm runtime libraries are not in the source tree.
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# Polly is not in the source tree.
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