include(FetchContent)
# Skip core tooling we won't need for extension
set(ENABLE_COVERAGE OFF)
set(BUILD_BENCHMARKS OFF)
set(BUILD_FUZZERS OFF)
set(BUILD_FILTERS OFF)
set(BUILD_GENERATORS OFF)
set(ENABLE_FORMAT OFF)
set(ENABLE_LINTING OFF)
set(ENABLE_DOCS OFF)
FetchContent_Declare(
h3
URL https://github.com/uber/h3/archive/refs/tags/v${H3_CORE_VERSION}.tar.gz
URL_HASH SHA256=${H3_CORE_SHA256}
)
FetchContent_MakeAvailable(h3)
set_target_properties(h3 PROPERTIES
INTERPROCEDURAL_OPTIMIZATION TRUE
C_VISIBILITY_PRESET hidden
)
if(CMAKE_C_COMPILER_ID MATCHES "GNU|Clang|AppleClang")
target_compile_options(h3 PRIVATE -fno-semantic-interposition)
endif()
# Export vendored H3 headers for downstream extension/tooling steps.
# In particular, LLVM bitcode generation for `h3`/`h3_postgis` needs this path.
set(H3_INCLUDE_DIR ${h3_BINARY_DIR}/src/h3lib/include CACHE INTERNAL "Vendored H3 include directory")
# h3_postgis also relies on a small set of released H3 internals for seam
# stitching. Recheck this path when bumping H3.
set(H3_INTERNAL_INCLUDE_DIR ${h3_SOURCE_DIR}/src/h3lib/include CACHE INTERNAL "Vendored H3 internal include directory")
