colmap/share/cmake/FindSQLite3.cmake

# Copyright (c) 2023, ETH Zurich and UNC Chapel Hill.
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# Author: Johannes L. Schoenberger (jsch-at-demuc-dot-de)

# Find package module for SQLite3 library.
#
# The following variables are set by this module:
#
#   SQLite3_FOUND: TRUE if SQLite3 is found.
#   SQLite3_INCLUDE_DIRS: Include directories for SQLite3.
#   SQLite3_LIBRARIES: Libraries required to link SQLite3.
#
# The following variables control the behavior of this module:
#
# SQLite3_INCLUDE_DIR_HINTS: List of additional directories in which to
#                              search for SQLite3 includes.
# SQLite3_LIBRARY_DIR_HINTS: List of additional directories in which to
#                              search for SQLite3 libraries.

set(SQLite3_INCLUDE_DIR_HINTS "" CACHE PATH "SQLite3 include directory")
set(SQLite3_LIBRARY_DIR_HINTS "" CACHE PATH "SQLite3 library directory")

unset(SQLite3_FOUND)
unset(SQLite3_INCLUDE_DIRS)
unset(SQLite3_LIBRARIES)

list(APPEND SQLite3_CHECK_INCLUDE_DIRS
    ${SQLite3_INCLUDE_DIR_HINTS}
    /usr/include
    /usr/local/include
    /opt/include
    /opt/local/include
)

list(APPEND SQLite3_CHECK_LIBRARY_DIRS
    ${SQLite3_LIBRARY_DIR_HINTS}
    /usr/lib
    /usr/local/lib
    /opt/lib
    /opt/local/lib
)

find_path(SQLite3_INCLUDE_DIRS
    NAMES
    sqlite3.h
    PATHS
    ${SQLite3_CHECK_INCLUDE_DIRS})
find_library(SQLite3_LIBRARIES
    NAMES
    sqlite3
    PATHS
    ${SQLite3_CHECK_LIBRARY_DIRS})

if(SQLite3_INCLUDE_DIRS AND SQLite3_LIBRARIES)
    set(SQLite3_FOUND TRUE)
endif()

if(SQLite3_FOUND)
    message(STATUS "Found SQLite3")
    message(STATUS "  Includes : ${SQLite3_INCLUDE_DIRS}")
    message(STATUS "  Libraries : ${SQLite3_LIBRARIES}")
else()
    if(SQLite3_FIND_REQUIRED)
        message(FATAL_ERROR "Could not find SQLite3")
    endif()
endif()