#Pragma options
Much of UECIDE's internals can be controlled from within your sketch during compilation using #pragma options. This ranges from selecting which board / compiler is in use, to adding extra compilation flags and other settings.
#pragma options take the form of:
#pragma key value
Some compilers also use #pragma internally in the same format. UECIDE understands the following keys:
- parameter
Sets, or overrides, an internal UECIDE variable. Exactly what variables are available for use depends on the board / core / compiler selected. Common usages include:
#pragma parameter extra.cflags=-Wunused-variable::-Wunused-local-typedefs
#pragma parameter extra.cppflags=-ffast-math
#pragma parameter extra.ldflags=-flto
#pragma parameter extra.libs=-lSDL2
- board
Sets the current board. Good for locking a sketch down to always compiling for the same board. For example:
#pragma board chipkit-lenny
- compiler
As for board but selectes a compiler:
#pragma compiler arm-none-eabi-gcc-7
- core
As for board and compiler but selected a core:
#pragma core arduino
- option
Similar to parameter but is used to select an entry in the Options menu. Format is:
#pragma option key=value
Where key is the name of a group and value is a selection within that group. The Copy settings option in the Options menu will copy the currently selected options into the clipboard in this #pragma format so you can paste them into your sketch.
- port
Selects a serial port for you. For example:
#pragma port /dev/ttyUSB1
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