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Build option#174

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Merged
fpistm merged 2 commits intostm32duino:masterfromfpistm:build_option
Dec 19, 2017
Merged

Build option#174

fpistm merged 2 commits intostm32duino:masterfromfpistm:build_option
Dec 19, 2017

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It is now possible to customize some core definitions
or gcc options thanks a file named "build_opt.h"
in the sketch directory. (using@file gcc option)

User can add it thanks the Arduino IDE in a tab to easily customize the core options.
That's why '.h' extension is used as IDE allows only those one: ino, h, hpp, c, cpp, pde.
Note: file is automatically copied in the{build.path}/sketch/ directory

Example of file content to change F_CPU value:
-UF_CPU -DF_CPU=72000000UL

If the file does not exist an empty one is created in the{build.path}/sketch/ directory.

Fix#41

Signed-off-by: Frederic Pillon <frederic.pillon@st.com>
@fpistmfpistm added the enhancementNew feature or request labelDec 11, 2017
@fpistmfpistm added this to theNext release milestoneDec 11, 2017
@fpistmfpistm self-assigned thisDec 11, 2017
@fpistmfpistm requested a review froma userDecember 11, 2017 16:36
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fpistm commentedDec 12, 2017•
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One example using the STM32Ethernet and LwIP libraries:
Adding in build_opt.h:
-DLWIP_DEBUG=1 -DLWIP_DBG_TYPES_ON=LWIP_DBG_ON -DIP_DEBUG=LWIP_DBG_ON "-DAPI_LIB_DEBUG LWIP_DBG_ON"
Allow to enable some debug without need to edit core or libraries files. Only at sketch level.

But there is a limitation. Even if the "Aggressively cache compiled core" is disabled.
When project has been built one time, changing build option in the file will not be taken into account as build see no change on source file (Using previously compiled file)
Only way to take it into account is to reopen IDE or clean the tmp build dir.

It is now possible to customize some core definitionsor gcc options thanks a file named "build_opt.h"in the sketch directory. (using@file gcc option)Example of file content to change F_CPU value:-UF_CPU -DF_CPU=72000000ULIf the file does not exist an empty one is created.Fixstm32duino#41Signed-off-by: Frederic Pillon <frederic.pillon@st.com>
@fpistmfpistm merged commit4ac494c intostm32duino:masterDec 19, 2017
@fpistmfpistm deleted the build_option branchDecember 19, 2017 10:08
benwaffle pushed a commit to benwaffle/Arduino_Core_STM32 that referenced this pull requestApr 10, 2019
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