# Cygnal compilation

**URL:** <https://forums.freertos.org/t/cygnal-compilation/2305>\
**Category:** Kernel\
**Created:** [October 26, 2006, 6:08pm UTC](https://forums.freertos.org/t/cygnal-compilation/2305 "2006-10-26T18:08:02Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![system](https://d2v6vdsk2p900z.cloudfront.net/original/1X/7fc8fdb729c645aab5b20282bbe34e57cb407be6.jpeg) [@system](https://forums.freertos.org/u/system)\
**Post date:** [October 26, 2006, 6:08pm UTC](https://forums.freertos.org/t/cygnal-compilation/2305/1 "2006-10-26T18:08:02Z")

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**nobody** wrote on [Thursday, October 26, 2006](https://sourceforge.net/p/freertos/discussion/382005/thread/6a350b74/#de9d):

I have problem with Cygnal demo compilation. I instaled SDCC, and when I try  
build the code i.e make, I see some errors: Parest/ParTest.rel cannot open. All  
.rel, .sym, .asm and others files are stored in Cygnal folder, i.e. where  
‘make’ is executed.  
I use Cygwin.

I’ll greatful for any help.

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**Author:** ![system](https://d2v6vdsk2p900z.cloudfront.net/original/1X/7fc8fdb729c645aab5b20282bbe34e57cb407be6.jpeg) [@system](https://forums.freertos.org/u/system)\
**Post date:** [October 26, 2006, 7:36pm UTC](https://forums.freertos.org/t/cygnal-compilation/2305/2 "2006-10-26T19:36:33Z")

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**nobody** wrote on [Thursday, October 26, 2006](https://sourceforge.net/p/freertos/discussion/382005/thread/6a350b74/#de9d/6eb2):

This might be something as simple as capitalization in the makefile.&nbsp; I run it from a DOS prompt without Cygwin and its compile.&nbsp; Under Cygwin the Unix rules of capitalization and / instead of \ will have to be considered.