LPCXpresso IDEのトピックRe: LPC 1343, Preprocessor '#error' does not pass compilation

LPC 1343, Preprocessor '#error' does not pass compilation

lpcware — Thu, 16 Jun 2016 02:16:13 GMT

Content originally posted in LPCWare by lsbach_plum on Mon Mar 12 14:45:29 MST 2012
Hi,

if anyone can use this directive? I have followed the description in the manual (although there could see a '# echo'). So my code looks like:

#if SYSTEM_CORE_CLOCK_24MHz

#error System core clock = 24 MHz

#define SYSTEM_CORE_CLOCK        24000000    //24MHz

#elif ....

thanks
lsbach

Re: LPC 1343, Preprocessor '#error' does not pass compilation

lpcware — Thu, 16 Jun 2016 02:16:14 GMT

Content originally posted in LPCWare by mdkendall on Mon Mar 12 14:53:43 MST 2012
#error is not supposed to "pass compilation", it is supposed to generate an error; that is the whole point of it. You would use it to trap compile-time problems such as not having defined a required macro, or having defined inconsistent or unsupported values for macros.

Re: LPC 1343, Preprocessor '#error' does not pass compilation

lpcware — Thu, 16 Jun 2016 02:16:15 GMT

Content originally posted in LPCWare by atomicdog on Mon Mar 12 18:03:21 MST 2012
Please try to explain what you want to do.
Maybe you want something like...

#if SYSTEM_CORE_CLOCK_24MHz

#pragma message "System core clock = 24 MHz"

#define SYSTEM_CORE_CLOCK        24000000    //24MHz

#elif ....

Re: LPC 1343, Preprocessor '#error' does not pass compilation

lpcware — Thu, 16 Jun 2016 02:16:16 GMT

Content originally posted in LPCWare by lsbach_plum on Mon Mar 12 21:52:43 MST 2012
I wanted the message appeared in stdrerr. At what point will appear if I use the directive '# pragma message'?

Re: LPC 1343, Preprocessor '#error' does not pass compilation

lpcware — Thu, 16 Jun 2016 02:16:16 GMT

Content originally posted in LPCWare by atomicdog on Mon Mar 12 21:58:30 MST 2012

Quote: lsbach_plum
At what point will appear if I use the directive '# pragma message'?

At the compiler output just like #warning and #error.

Re: LPC 1343, Preprocessor '#error' does not pass compilation

lpcware — Thu, 16 Jun 2016 02:16:17 GMT

Content originally posted in LPCWare by lsbach_plum on Mon Mar 12 23:49:56 MST 2012
thanks for your help