CMake parsing error. Expected "(", got newline with text " " - cmake

Question

When building an application (Nominatim-4.1.0) by using the command cmake $USERHOME/Nominatim-4.1.0 I run into the following parsing error:
CMake Error at CMakeLists.txt:3: Parse error. Expected "(", got
newline with text " ".
I don't understand this error message, because at line 3 there is just a text comment.
#-----------------------------------------------------------------------------
#
# CMake Config
#
# Nominatim
#
#-----------------------------------------------------------------------------
cmake_minimum_required(VERSION 3.0 FATAL_ERROR)
list(APPEND CMAKE_MODULE_PATH "${CMAKE_SOURCE_DIR}/cmake")
#-----------------------------------------------------------------------------
#
# Project version
#
#-----------------------------------------------------------------------------
project(nominatim)
set(NOMINATIM_VERSION_MAJOR 4)
set(NOMINATIM_VERSION_MINOR 1)
set(NOMINATIM_VERSION_PATCH 0)
set(NOMINATIM_VERSION "${NOMINATIM_VERSION_MAJOR}.${NOMINATIM_VERSION_MINOR}.${NOMINATIM_VERSION_PATCH}")
add_definitions(-DNOMINATIM_VERSION="${NOMINATIM_VERSION}")
# Setting GIT_HASH
find_package(Git)
if (GIT_FOUND)
execute_process(
COMMAND "${GIT_EXECUTABLE}" log -1 --format=%h
WORKING_DIRECTORY ${CMAKE_CURRENT_LIST_DIR}
OUTPUT_VARIABLE GIT_HASH
OUTPUT_STRIP_TRAILING_WHITESPACE
ERROR_QUIET
)
endif()
#-----------------------------------------------------------------------------
# Configuration
#-----------------------------------------------------------------------------
set(BUILD_IMPORTER on CACHE BOOL "Build everything for importing/updating the database")
set(BUILD_API on CACHE BOOL "Build everything for the API server")
set(BUILD_MODULE off CACHE BOOL "Build PostgreSQL module for legacy tokenizer")
set(BUILD_TESTS on CACHE BOOL "Build test suite")
set(BUILD_DOCS on CACHE BOOL "Build documentation")
set(BUILD_MANPAGE on CACHE BOOL "Build Manual Page")
set(BUILD_OSM2PGSQL on CACHE BOOL "Build osm2pgsql (expert only)")
set(INSTALL_MUNIN_PLUGINS on CACHE BOOL "Install Munin plugins for supervising Nominatim")
#-----------------------------------------------------------------------------
# osm2pgsql (imports/updates only)
#-----------------------------------------------------------------------------
if (BUILD_IMPORTER AND BUILD_OSM2PGSQL)
if (NOT EXISTS "${CMAKE_SOURCE_DIR}/osm2pgsql/CMakeLists.txt")
message(FATAL_ERROR "The osm2pgsql directory is empty.\
Did you forget to check out Nominatim recursively?\
\nTry updating submodules with: git submodule update --init")
endif()
set(BUILD_TESTS_SAVED "${BUILD_TESTS}")
set(BUILD_TESTS off)
set(WITH_LUA off CACHE BOOL "")
add_subdirectory(osm2pgsql)
set(BUILD_TESTS ${BUILD_TESTS_SAVED})
endif()
#-----------------------------------------------------------------------------
# python (imports/updates only)
#-----------------------------------------------------------------------------
if (BUILD_IMPORTER)
find_package(PythonInterp 3.6 REQUIRED)
endif()
#-----------------------------------------------------------------------------
# PHP
#-----------------------------------------------------------------------------
# Setting PHP binary variable as to command line (prevailing) or auto detect
if (BUILD_API OR BUILD_IMPORTER)
if (NOT PHP_BIN)
find_program (PHP_BIN php)
endif()
# sanity check if PHP binary exists
if (NOT EXISTS ${PHP_BIN})
message(FATAL_ERROR "PHP binary not found. Install php or provide location with -DPHP_BIN=/path/php ")
else()
message (STATUS "Using PHP binary " ${PHP_BIN})
endif()
if (NOT PHPCGI_BIN)
find_program (PHPCGI_BIN php-cgi)
endif()
# sanity check if PHP binary exists
if (NOT EXISTS ${PHPCGI_BIN})
message(WARNING "php-cgi binary not found. nominatim tool will not provide query functions.")
set (PHPCGI_BIN "")
else()
message (STATUS "Using php-cgi binary " ${PHPCGI_BIN})
endif()
endif()
#-----------------------------------------------------------------------------
# import scripts and utilities (importer only)
#-----------------------------------------------------------------------------
if (BUILD_IMPORTER)
find_file(COUNTRY_GRID_FILE country_osm_grid.sql.gz
PATHS ${PROJECT_SOURCE_DIR}/data
NO_DEFAULT_PATH
DOC "Location of the country grid file."
)
if (NOT COUNTRY_GRID_FILE)
message(FATAL_ERROR "\nYou need to download the country_osm_grid first:\n"
" wget -O ${PROJECT_SOURCE_DIR}/data/country_osm_grid.sql.gz https://www.nominatim.org/data/country_grid.sql.gz")
endif()
configure_file(${PROJECT_SOURCE_DIR}/cmake/tool.tmpl
${PROJECT_BINARY_DIR}/nominatim)
endif()
#-----------------------------------------------------------------------------
# Tests
#-----------------------------------------------------------------------------
if (BUILD_TESTS)
include(CTest)
set(TEST_BDD db osm2pgsql api)
find_program(PYTHON_BEHAVE behave)
find_program(PYLINT NAMES pylint3 pylint)
find_program(PYTEST NAMES pytest py.test-3 py.test)
find_program(PHPCS phpcs)
find_program(PHPUNIT phpunit)
if (PYTHON_BEHAVE)
message(STATUS "Using Python behave binary ${PYTHON_BEHAVE}")
foreach (test ${TEST_BDD})
add_test(NAME bdd_${test}
COMMAND ${PYTHON_BEHAVE} ${test}
WORKING_DIRECTORY ${PROJECT_SOURCE_DIR}/test/bdd)
set_tests_properties(bdd_${test}
PROPERTIES ENVIRONMENT "NOMINATIM_DIR=${PROJECT_BINARY_DIR}")
endforeach()
else()
message(WARNING "behave not found. BDD tests disabled." )
endif()
if (PHPUNIT)
message(STATUS "Using phpunit binary ${PHPUNIT}")
add_test(NAME php
COMMAND ${PHPUNIT} ./
WORKING_DIRECTORY ${PROJECT_SOURCE_DIR}/test/php)
else()
message(WARNING "phpunit not found. PHP unit tests disabled." )
endif()
if (PHPCS)
message(STATUS "Using phpcs binary ${PHPCS}")
add_test(NAME phpcs
COMMAND ${PHPCS} --report-width=120 --colors lib-php
WORKING_DIRECTORY ${PROJECT_SOURCE_DIR})
else()
message(WARNING "phpcs not found. PHP linting tests disabled." )
endif()
if (PYLINT)
message(STATUS "Using pylint binary ${PYLINT}")
add_test(NAME pylint
COMMAND ${PYLINT} nominatim
WORKING_DIRECTORY ${PROJECT_SOURCE_DIR})
else()
message(WARNING "pylint not found. Python linting tests disabled.")
endif()
if (PYTEST)
message(STATUS "Using pytest binary ${PYTEST}")
add_test(NAME pytest
COMMAND ${PYTEST} test/python
WORKING_DIRECTORY ${PROJECT_SOURCE_DIR})
else()
message(WARNING "pytest not found. Python tests disabled." )
endif()
endif()
#-----------------------------------------------------------------------------
# Postgres module
#-----------------------------------------------------------------------------
if (BUILD_MODULE)
add_subdirectory(module)
endif()
#-----------------------------------------------------------------------------
# Documentation
#-----------------------------------------------------------------------------
if (BUILD_DOCS)
add_subdirectory(docs)
endif()
#-----------------------------------------------------------------------------
# Manual page
#-----------------------------------------------------------------------------
if (BUILD_MANPAGE)
add_subdirectory(man)
endif()
#-----------------------------------------------------------------------------
# Installation
#-----------------------------------------------------------------------------
include(GNUInstallDirs)
set(NOMINATIM_DATADIR ${CMAKE_INSTALL_FULL_DATADIR}/${PROJECT_NAME})
set(NOMINATIM_LIBDIR ${CMAKE_INSTALL_FULL_LIBDIR}/${PROJECT_NAME})
set(NOMINATIM_CONFIGDIR ${CMAKE_INSTALL_FULL_SYSCONFDIR}/${PROJECT_NAME})
set(NOMINATIM_MUNINDIR ${CMAKE_INSTALL_FULL_DATADIR}/munin/plugins)
if (BUILD_IMPORTER)
configure_file(${PROJECT_SOURCE_DIR}/cmake/tool-installed.tmpl installed.bin)
install(PROGRAMS ${PROJECT_BINARY_DIR}/installed.bin
DESTINATION ${CMAKE_INSTALL_BINDIR}
RENAME nominatim)
install(DIRECTORY nominatim
DESTINATION ${NOMINATIM_LIBDIR}/lib-python
FILES_MATCHING PATTERN "*.py"
PATTERN __pycache__ EXCLUDE)
install(DIRECTORY lib-sql DESTINATION ${NOMINATIM_LIBDIR})
install(FILES ${COUNTRY_GRID_FILE}
data/words.sql
DESTINATION ${NOMINATIM_DATADIR})
endif()
if (BUILD_OSM2PGSQL)
if (${CMAKE_VERSION} VERSION_LESS 3.13)
# Installation of subdirectory targets was only introduced in 3.13.
# So just copy the osm2pgsql file for older versions.
install(PROGRAMS ${PROJECT_BINARY_DIR}/osm2pgsql/osm2pgsql
DESTINATION ${NOMINATIM_LIBDIR})
else()
install(TARGETS osm2pgsql RUNTIME DESTINATION ${NOMINATIM_LIBDIR})
endif()
endif()
if (BUILD_MODULE)
install(PROGRAMS ${PROJECT_BINARY_DIR}/module/nominatim.so
DESTINATION ${NOMINATIM_LIBDIR}/module)
endif()
if (BUILD_API)
install(DIRECTORY lib-php DESTINATION ${NOMINATIM_LIBDIR})
endif()
install(FILES settings/env.defaults
settings/address-levels.json
settings/phrase-settings.json
settings/import-admin.style
settings/import-street.style
settings/import-address.style
settings/import-full.style
settings/import-extratags.style
settings/icu_tokenizer.yaml
settings/country_settings.yaml
DESTINATION ${NOMINATIM_CONFIGDIR})
install(DIRECTORY settings/icu-rules
DESTINATION ${NOMINATIM_CONFIGDIR})
install(DIRECTORY settings/country-names
DESTINATION ${NOMINATIM_CONFIGDIR})
if (INSTALL_MUNIN_PLUGINS)
install(FILES munin/nominatim_importlag
munin/nominatim_query_speed
munin/nominatim_requests
DESTINATION ${NOMINATIM_MUNINDIR})
endif()
Do you know what could go wrong here? I am trying to install this application on a Raspberry Pi with OS Bullseye with CMake 3.18.4.