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Program names containing '-' (for example, renaming hello to hello-world via PROGNAME) previously generated an invalid identifier <NAME>_main when constructing the main= compiler definition and the APP_MAIN target property used during builtin list generation. This caused the CMake build to fail because '-' is not a valid character in a C identifier. This mirrors the Make-based fix (Application.mk's PROGSYM) for the traditional build. Introduce NAME_SYM, a sanitized copy of NAME with '-' replaced by '_', and use it only where an internal C identifier is required: the main= COMPILE_DEFINITIONS property and the APP_MAIN target property. Leave NAME unchanged everywhere else, including CMake target/output names and the APP_NAME property, where hyphens are valid. The standalone/loadable executable path (MODULE/DYNLIB/kernel build) does not rename main() and therefore requires no sanitization because each executable is linked independently rather than merged into a shared builtin image. Testing (WSL2 Ubuntu, x86_64): - BOARD_CONFIG=sim/nsh, CONFIG_EXAMPLES_HELLO_PROGNAME="hello-world": clean CMake configure/build; 'hello-world' runs and prints 'Hello, World!!' - Reverted to CONFIG_EXAMPLES_HELLO_PROGNAME="hello": reconfigured and rebuilt; 'hello' runs and prints 'Hello, World!!' (no regression) Fixes #19447 Signed-off-by: Ansh Rai <anshrai331@gmail.com>