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| author | John Ericson <John.Ericson@Obsidian.Systems> | 2022-06-11 06:11:59 +0000 |
|---|---|---|
| committer | John Ericson <John.Ericson@Obsidian.Systems> | 2022-07-21 19:04:00 +0000 |
| commit | 07b749800c5cd4105d49ab46be5f0a2079dd709a (patch) | |
| tree | 7e8d383f0314d05ddb254035e680839f93b34a83 /lld/CMakeLists.txt | |
| parent | a1ec0d8bdccab1d28e009375209965017c872d3d (diff) | |
| download | llvm-07b749800c5cd4105d49ab46be5f0a2079dd709a.tar.gz | |
[cmake] Don't export `LLVM_TOOLS_INSTALL_DIR` anymore
First of all, `LLVM_TOOLS_INSTALL_DIR` put there breaks our NixOS
builds, because `LLVM_TOOLS_INSTALL_DIR` defined the same as
`CMAKE_INSTALL_BINDIR` becomes an *absolute* path, and then when
downstream projects try to install there too this breaks because our
builds always install to fresh directories for isolation's sake.
Second of all, note that `LLVM_TOOLS_INSTALL_DIR` stands out against the
other specially crafted `LLVM_CONFIG_*` variables substituted in
`llvm/cmake/modules/LLVMConfig.cmake.in`.
@beanz added it in d0e1c2a550ef348aae036d0fe78cab6f038c420c to fix a
dangling reference in `AddLLVM`, but I am suspicious of how this
variable doesn't follow the pattern.
Those other ones are carefully made to be build-time vs install-time
variables depending on which `LLVMConfig.cmake` is being generated, are
carefully made relative as appropriate, etc. etc. For my NixOS use-case
they are also fine because they are never used as downstream install
variables, only for reading not writing.
To avoid the problems I face, and restore symmetry, I deleted the
exported and arranged to have many `${project}_TOOLS_INSTALL_DIR`s.
`AddLLVM` now instead expects each project to define its own, and they
do so based on `CMAKE_INSTALL_BINDIR`. `LLVMConfig` still exports
`LLVM_TOOLS_BINARY_DIR` which is the location for the tools defined in
the usual way, matching the other remaining exported variables.
For the `AddLLVM` changes, I tried to copy the existing pattern of
internal vs non-internal or for LLVM vs for downstream function/macro
names, but it would good to confirm I did that correctly.
Reviewed By: nikic
Differential Revision: https://reviews.llvm.org/D117977
Diffstat (limited to 'lld/CMakeLists.txt')
| -rw-r--r-- | lld/CMakeLists.txt | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/lld/CMakeLists.txt b/lld/CMakeLists.txt index ec11de705a83..dcc649629a4b 100644 --- a/lld/CMakeLists.txt +++ b/lld/CMakeLists.txt @@ -156,6 +156,10 @@ if(LLD_BUILT_STANDALONE) endif() endif() # standalone +set(LLD_TOOLS_INSTALL_DIR "${CMAKE_INSTALL_BINDIR}" CACHE PATH + "Path for binary subdirectory (defaults to '${CMAKE_INSTALL_BINDIR}')") +mark_as_advanced(LLD_TOOLS_INSTALL_DIR) + set(LLD_SOURCE_DIR ${CMAKE_CURRENT_SOURCE_DIR}) set(LLD_INCLUDE_DIR ${LLD_SOURCE_DIR}/include ) set(LLD_BINARY_DIR ${CMAKE_CURRENT_BINARY_DIR}) |