Hello, I'm using FPC to build embedded binaries for the Nordic Semiconductor nRF51-DK development board:
http://www.nordicsemi.com/eng/Products/nRF51-DK I have been able to adapt the sample gcc make scripts to replace C units with equivalent pascal units after partially translating the header files from the SDK. This has enabled me to build test applications to use the board's buttons, LEDs, UART and timers. However, when I try to use pascal string variables (short or long) the compiler fails. For example the following works: Function Main: Integer; Cdecl; Alias: 'main'; Begin UARTConfigure(11, 9, 10, 8, True); UARTPutString('Hello World'); End; But this fails: Function Main: Integer; Cdecl; Alias: 'main'; Var Text: String; Begin Text := 'Hello World'; UARTConfigure(11, 9, 10, 8, True); UARTPutString(Text); End; With the following errors: Main.pas:(.text.n_main_$$_main$$smallint+0xe): undefined reference to `fpc_pushexceptaddr' Main.pas:(.text.n_main_$$_main$$smallint+0x12): undefined reference to `fpc_setjmp' Main.pas:(.text.n_main_$$_main$$smallint+0x26): undefined reference to `fpc_shortstr_to_shortstr' Main.pas:(.text.n_main_$$_main$$smallint+0x42): undefined reference to `fpc_shortstr_to_ansistr' Main.pas:(.text.n_main_$$_main$$smallint+0x4e): undefined reference to `fpc_popaddrstack' Main.pas:(.text.n_main_$$_main$$smallint+0x54): undefined reference to `fpc_ansistr_decr_ref' Main.pas:(.text.n_main_$$_main$$smallint+0x64): undefined reference to `fpc_reraise' I assume this is because string handling support is not included in the embedded RTL generated with the compiler, or that I am not linking the right object files if I need to do this by hand? What would be the best way to enable string handling? Even short string handling would make FPC far more preferable to C for me for embedded work. Thanks, Paul Michell _______________________________________________ fpc-devel maillist - fpc-devel@lists.freepascal.org http://lists.freepascal.org/cgi-bin/mailman/listinfo/fpc-devel
