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[cmake] Disable ZSTD_BUILD_PROGRAMS by default when zstd is a subproject #4883

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[cmake] Disable ZSTD_BUILD_PROGRAMS by default when zstd is a subproject #4883

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[cmake] Disable ZSTD_BUILD_PROGRAMS when zstd is a subproject
crueter Nov 1, 2026
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crueter Nov 1, 2026
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10 changes: 10 additions & 0 deletions CMakeLists.txt
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Original file line number Diff line number Diff line change
@@ -1,5 +1,15 @@
cmake_minimum_required(VERSION 3.10)

# Determine if zstd is built as a subproject (using add_subdirectory) or if it
# is the master project.
if (NOT DEFINED ZSTD_MASTER_PROJECT)
set(ZSTD_MASTER_PROJECT OFF)
# Checking project name is more reliable than checking source directories.
if (NOT DEFINED PROJECT_NAME)
set(ZSTD_MASTER_PROJECT ON)
endif()
endif()

# Thin wrapper so `cmake -S .` behaves like `cmake -S build/cmake`.
# Policy lives in build/cmake; keep parent project language-less.
project(zstd-superbuild LANGUAGES NONE)
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2 changes: 1 addition & 1 deletion build/cmake/CMakeModules/ZstdOptions.cmake
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Expand Up @@ -41,7 +41,7 @@ else()
endif()

# Build component options
option(ZSTD_BUILD_PROGRAMS "Build command-line programs" ON)
option(ZSTD_BUILD_PROGRAMS "Build command-line programs" ${ZSTD_MASTER_PROJECT})
option(ZSTD_BUILD_CONTRIB "Build contrib utilities" OFF)
option(ZSTD_PROGRAMS_LINK_SHARED "Link programs against shared library" OFF)

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