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CMake: Turn LLVM_ENABLE_ZLIB into a tri-state option

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Summary:
Add FORCE_ON option to LLVM_ENABLE_ZLIB, which causes a configuration
error if zlib is not found.
Similar to https://reviews.llvm.org/D40050.

Reviewers: hans, thakis, rnk

Subscribers: mgorny, llvm-commits

Tags: #llvm

Differential Revision: https://reviews.llvm.org/D76110
This commit is contained in:
Amy Huang 2020-03-12 15:51:40 -07:00
parent a30499dbf2
commit 24d4829906
2 changed files with 5 additions and 1 deletions
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2
CMakeLists.txt
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@ -348,7 +348,7 @@ option(LLVM_ENABLE_LIBPFM "Use libpfm for performance counters if available." ON
option(LLVM_ENABLE_THREADS "Use threads if available." ON)
option(LLVM_ENABLE_ZLIB "Use zlib for compression/decompression if available." ON)
set(LLVM_ENABLE_ZLIB "ON" CACHE STRING "Use zlib for compression/decompression if available. Can be ON, OFF, or FORCE_ON")
set(LLVM_Z3_INSTALL_DIR "" CACHE STRING "Install directory of the Z3 solver.")

4
cmake/config-ix.cmake
View File

@ -175,6 +175,10 @@ if (LLVM_ENABLE_LIBXML2 STREQUAL "FORCE_ON" AND NOT LLVM_LIBXML2_ENABLED)
message(FATAL_ERROR "Failed to congifure libxml2")
endif()
if (LLVM_ENABLE_ZLIB STREQUAL "FORCE_ON" AND NOT HAVE_LIBZ)
message(FATAL_ERROR "Failed to configure zlib")
endif()
check_library_exists(xar xar_open "" HAVE_LIBXAR)
if(HAVE_LIBXAR)
set(XAR_LIB xar)