https://bugs.llvm.org/show_bug.cgi?id=48974
Bug ID: 48974
Summary: LLVM_DYLIB_COMPONENTS broken with multiple targets
Product: Build scripts
Version: trunk
Hardware: PC
OS: Linux
Status: NEW
Severity: enhancement
Priority: P
Component: cmake
Assignee: unassignedb...@nondot.org
Reporter: nikita....@gmail.com
CC: llvm-bugs@lists.llvm.org
When using LLVM_DYLIB_COMPONENTS and building multiple targets, cmake will fail
with:
Library 'x86' is a direct reference to a target library for an omitted
target.
Call Stack (most recent call first):
tools/llvm-shlib/CMakeLists.txt:18 (llvm_map_components_to_libnames)
This is despite the fact that X86 is included in LLVM_TARGETS_TO_BUILD.
The problem appears to be that
https://github.com/llvm/llvm-project/blob/7de711ecca99f81da3c2ae1705cefe0b4bda70b3/llvm/cmake/modules/LLVM-Config.cmake#L32
uses REMOVE_LIST to remove a list from a list, while it can only remove an
element from a list. As such, if LLVM_TARGETS_TO_BUILD contains multiple
targets, this will leave omitted_targets to contain all targets and incorrectly
fail the build.
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