Don't make pot-file generation optional.

It is needed for compiling translations. Not really, but the CMake module thinks
so.

CMakeLists.txt

@@ -13,7 +13,6 @@ list(APPEND CMAKE_MODULE_PATH "${PROJECT_SOURCE_DIR}/cmake")
 
 # Project build options.
 option(WITH_TESTS "Compile tests." NO)
-option(GENERATE_POT "Generate / Update .pot file" YES)
 
 set(CMAKE_CXX_STANDARD 17)
 set(CMAKE_CXX_STANDARD_REQUIRED ON)

README.adoc

@@ -78,7 +78,6 @@ cmake --build . -- --jobs=$(nproc --ignore=1)
 .CMake options:
 * `-DCMAKE_BUILD_TYPE=Debug` for a debug build.
 * `-DWITH_TESTS=YES` if you want to compile the tests.
-* `-DGENERATE_POT=NO` to not (re-)generate the .pot file.
 * `-DXGETTEXT_CMD=String` The program to use instead of `xgettext`.
 
 include::{uri-base}/raw/branch/main/CONTRIBUTING.adoc[]

translations/CMakeLists.txt

@@ -1,9 +1,7 @@
 set(potfile "${PROJECT_SOURCE_DIR}/translations/${PROJECT_NAME}.pot")
+file(GLOB po_src_files "../src/*pp")
 
-if(GENERATE_POT)
-  file(GLOB po_src_files "../src/*pp")
-
-  add_custom_command(OUTPUT ${potfile}
+add_custom_command(OUTPUT ${potfile}
   COMMAND "${XGETTEXT_CMD}"
   "--language=C++"
   "--keyword=translate:1,1t"
@@ -19,11 +17,10 @@ if(GENERATE_POT)
   DEPENDS "${po_src_files}"
   WORKING_DIRECTORY "${PROJECT_SOURCE_DIR}"
   COMMENT "Extract translatable messages to ${potfile}")
-  add_custom_target(${PROJECT_NAME}_pot
+add_custom_target(${PROJECT_NAME}_pot
   ALL DEPENDS ${potfile})
 
-  unset(po_src_files)
-endif(GENERATE_POT)
+unset(po_src_files)
 
 file(GLOB po_files "*.po")