MQX 4.1 using EWL (Embedded Warrior Libraries)

jasonss — Mon, 09 Feb 2015 17:03:39 GMT

I am porting an MQX 3.7 ColdFire application to MQX 4.1 and I am having issues building with the EWL libraries, which we are using with the MQX 3.7 application.

Currently I am simply trying to create a new basic MQX 4.1 project using the project wizard (in CodeWarrior 10.6) with the Librarian model set to “ewl” (int_FP, int_FP, buffered) and I am still getting build errors. I can change the Librarian model back to “c9x” and all builds fine, however for my application I need the smaller memory footprint advantage of the ewl libraries so I don’t believe c9x will work. FYI, I found the following thread on the Freescale community forums, however I don’t need to use C++ and the issues described are different than what I am experiencing so they don’t help.

https://community.freescale.com/thread/305191

Here are the steps I follow to reproduce the build error:

In CodeWarrior click File->New->MQX 4.1 Project
Enter a name and select “TWRMCF52259 Board”.
Select application type: “New application”
Do not select any of the additional MQX libraries.
Select application type: “Empty application”
Don’t add any more files to the project and click Finish.
Set “twrmcf52259_Int_Flash_Release” as the active Build Configuration (Note: I have already successfully built release builds of the BSP, PSP, etc)
Clean/Build the project. The project builds successfully.
Under project properties, change the Librarian model from “c9x” to “ewl” (int_FP, int_FP, buffered).
Clean/Build the project. The build fails with the following error:

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**** Build of configuration twrmcf52259_Int_Flash_Release for project appl ****

"C:\\Freescale\\CW MCU v10.6\\gnu\\bin\\mingw32-make" -j16 all

'Building file: ../Sources/main.c'

'Executing target #1 ../Sources/main.c'

'Invoking: ColdFire Compiler'

"C:/Freescale/CW MCU v10.6/MCU/ColdFire_Tools/Command_Line_Tools/mwccmcf" @@"Sources/main.args" -o "Sources/main_c.obj" "../Sources/main.c" -MD -gccdep

C:/Freescale/CW MCU v10.6/MCU/ColdFire_Tools/Command_Line_Tools/mwccmcf|Compiler|Error

(C:\Sandbox\New_HIC_MQX_4_1_1\appl\twrmcf52259_Int_Flash_Release\(command-line defines)|1|8|8|8|8)

=#define _EWL_C99 1

>macro '_EWL_C99' redefined

C:/Freescale/CW MCU v10.6/MCU/ColdFire_Tools/Command_Line_Tools/mwccmcf|Compiler|Note

(C:\Freescale\CW MCU v10.6\MCU\ColdFire_Support\ewl\EWL_C\include\lib_ewl.prefix|19|9|8|496|8)

= #define _EWL_C99 0 /* EWL is not C99 compliant */

> (location of previous definition)

Errors caused tool to abort.

mingw32-make: *** [Sources/main_c.obj] Error 1

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11. It seems that the lib_ewl.prefix file is not aware that “_EWL_C99” is defined in my project. I can manually edit the prefix file to add “#define _EWL_C99 1” and I am able to build successfully. However, this only works with this very basic MQX 4.1 project that I have created. If I follow the same steps above, but also select “Add Shell support” and “Add RTCS support” … and also select “Basic Application” in the new MQX 4.1 Project wizard, I get the following build errors (assuming I have again edited the lib_ewl.prefix to define _EWL_C99 as 1):

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'Building target: appl.elf'

'Executing target #4 appl.elf'

'Invoking: ColdFire Linker'

"C:/Freescale/CW MCU v10.6/MCU/ColdFire_Tools/Command_Line_Tools/mwldmcf" -o "appl.elf" @@"appl.args"