From 64898cc27e6d48f3069f4bb44659051c9e1fca94 Mon Sep 17 00:00:00 2001 From: Hamid El Maazouz Date: Tue, 27 May 2025 00:06:00 +0100 Subject: [PATCH] [cmake] Introduce LLVM_DISABLE_PROJECTS to easily exclude projects --- llvm/CMakeLists.txt | 6 +++++- llvm/docs/CMake.rst | 8 ++++++++ 2 files changed, 13 insertions(+), 1 deletion(-) diff --git a/llvm/CMakeLists.txt b/llvm/CMakeLists.txt index b672cb9365284..ebf0977512513 100644 --- a/llvm/CMakeLists.txt +++ b/llvm/CMakeLists.txt @@ -138,6 +138,10 @@ if(NOT "${FOUND_INDEX}" STREQUAL "-1") list(REMOVE_ITEM LLVM_ENABLE_PROJECTS "pstl") endif() +foreach(proj ${LLVM_DISABLE_PROJECTS}) + list(REMOVE_ITEM LLVM_ENABLE_PROJECTS "${proj}") +endforeach () + foreach(proj ${LLVM_ENABLE_PROJECTS}) if (NOT proj STREQUAL "llvm" AND NOT "${proj}" IN_LIST LLVM_KNOWN_PROJECTS) MESSAGE(FATAL_ERROR "${proj} isn't a known project: ${LLVM_KNOWN_PROJECTS}. Did you mean to enable it as a runtime in LLVM_ENABLE_RUNTIMES?") @@ -666,7 +670,7 @@ if(LLVM_EXPERIMENTAL_TARGETS_TO_BUILD STREQUAL "all") set(LLVM_EXPERIMENTAL_TARGETS_TO_BUILD ${LLVM_ALL_EXPERIMENTAL_TARGETS}) endif() -if("flang" IN_LIST LLVM_ENABLE_PROJECTS AND +if("flang" IN_LIST LLVM_ENABLE_PROJECTS AND "AArch64" IN_LIST LLVM_TARGETS_TO_BUILD AND NOT ("compiler-rt" IN_LIST LLVM_ENABLE_RUNTIMES OR "compiler-rt" IN_LIST LLVM_ENABLE_PROJECTS)) message(STATUS "Enabling compiler-rt as a dependency of Flang") diff --git a/llvm/docs/CMake.rst b/llvm/docs/CMake.rst index 30b71bffaf76f..e49fd07829771 100644 --- a/llvm/docs/CMake.rst +++ b/llvm/docs/CMake.rst @@ -435,6 +435,14 @@ its enabled sub-projects. Nearly all of these variable names begin with of the machine where LLVM is being built. If you are building a cross-compiler, set it to the target triple of your desired architecture. +**LLVM_DISABLE_PROJECTS**:STRING + Semicolon-separated list of projects to exclude from the build. Sometimes it is + more convenient to exclude a few projects than to have to enumerate all other + projects. This flag can be combined with ``LLVM_ENABLE_PROJECTS`` to easily + select projects of interest in the build. For example, the command: + ``cmake ... -DLLVM_ENABLE_PROJECTS=all -DLLVM_DISABLE_PROJECTS=libclc ...`` + allows to build all projects but ``libclc``. + **LLVM_DOXYGEN_QCH_FILENAME**:STRING The filename of the Qt Compressed Help file that will be generated when ``-DLLVM_ENABLE_DOXYGEN=ON`` and