These variables denote the flags used in compiler and linker rules. They are defined as REAL_(CPP|C|LD)FLAGS ?= BUILD_(CPP|C|LD)FLAGS and provide a means to override the flags assembled cumulatively.
USE_DISABLE_COMPILER_OPTIMISATION_OPTS = true disables options targeted at disabling optimization features, which were introduced to facilitate debugging in the first place, but make the commandline harder to compare to others while troubleshooting the compile process
Code generated for Cortex M3 stopped working after adding -L$(TC_SYS_ROOT)/lib. The problem is that libc et al have to be taken from $(TC_SYS_ROOT)/lib/thumb, which is correctly taken if explicit -L is left out.
Probably breaks mingw, to be tested and fixed in the next iteration.
Add support for building the firmware of the Cortex M3 ST-NUCLEO-F103RB development board with an STM32 microcontroller. This commit add some hooks, notably support for tagged templates, but adds lots of crap, too, notably makefiles and variables that should have different names and / or functionality.
New makefiles are: Mcu-defs.mk mcu-exe.mk mcu-flash.mk mcu-tags.mk mcu-topdir.mk tagged-tmpl.mk, a new directory is tmpl/tagged.
This commit takes the MinGW cross compilation further into the direction of being a more general framework for cross compilation. Changed some variable names that are too specialized, notably MinGW tool chain directories, compilers, utilities.
This commit makes it possible to successfully run "make all" against ytools' again, with TARGET_TUPLE set to i686-ms-w64-mingw. Lots of minor and major tweaks here and there.
The biggest diff is a move of the architecture-related definitions into platform.mk. The are needed pretty early on, so that seems reasonable.
Making this work again is part of the larger effort to support cross buildchains in a more concise way, i.e. without so many if ($(TARGET),mingw)) all over the place. TARGET's relevance should dwindle, until it's finally taken over by the TARGET_XXX variables extracted from TARGET_TUPLE or TARGET_TRIPLET.
This commit tries to remove the necessity to call projects.py from $(TOPDIR) to speed up recursive builds over all projects yet again. This is a major undertaking. There are two variables which are filled py projects.py in $(TOPDIR): PREREQ and PREREQ_DIRS. Sadly, the latter is a path relative to $(TOPDIR)/make, so this is kind of pointless. Unless the cache is maintained in $(TOPDIR), a thing I tried to avoid. So this commit is only able to cache $(PREREQ), not $(PREREQ_DIRS), which still is a hassle. Introduced defs-dirs.mk for that, to make it accessible to make.mk, and modified all the other parts of the machinery, too.
This commit sees several improvements to the build performance:
- Introduce cache.mk, which creates makefiles caching often used variables, per tree and per project. - Define more variables with := enclosed in condistions, instead of defining them with ?=, because the RHS of ?= is expanded deferredly. - Add more definitions for executables. - Move some more specialized definitions out into specialized makefiles, notably htdocs.mk and tmpl.mk
C++ definitions are numerous, and they shouldn't pollute variable space and performance outside of directories containing C++ files. This commit pushes them into a defs-cpp.mk file.
