Protected virtual build system against link order problems
This considers improvements that already had been considered for the avr architecture. Signed-off-by: Florian Fleissner <florian.fleissner@inpartik.de>
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@ -29,7 +29,10 @@ compiler.objcopy.cmd=objcopy
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compiler.objcopy.eep.flags=-O ihex -j .eeprom --set-section-flags=.eeprom=alloc,load --no-change-warnings --change-section-lma .eeprom=0
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compiler.elf2hex.flags=-O ihex -R .eeprom
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compiler.elf2hex.cmd=objcopy
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# Until Arduino learns to adhere to ldflags defined in library.properties, we have to define extra link flags for Kaleidoscope-Simulator here
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#
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compiler.ldflags=
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compiler.ldflags.linux=-lXtst -lX11 -lpthread
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compiler.size.cmd=echo >/dev/null
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# This can be overridden in boards.txt
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@ -70,19 +73,24 @@ recipe.ar.pattern="{compiler.path}{compiler.ar.cmd}" {compiler.ar.flags} {compil
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## This is necessary to prevent link errors reporting unresolved symbols
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## due to order dependencies of libraries and objects appearing
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## in the linker command line.
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##
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## CHANGED WRT DEFAULT: Remove a pre-existing joined library. This is necessary if the library was not
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## removed at the end of a previous build, because the build process
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## terminated early after a failed attempt to link (e.g. because of missing symbols).
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recipe.hooks.linking.prelink.1.pattern={tools.rm_start.cmd} "{build.path}/{build.project_name}_joined.a" {tools.rm_end.cmd}
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##
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## CHANGED WRT DEFAULT: Generate a large .a archive to prevent link order issues with garbage collection
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recipe.c.combine.pattern="{compiler.path}/{compiler.ar.cmd}" {compiler.c.elf.flags_join_archives} "{build.path}/{build.project_name}_joined.a" {object_files} "{build.path}/{archive_file}"
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##
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## NEWLY INTRODUCED: Link with global garbage collection (considering all
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## objects and libraries together).
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recipe.hooks.linking.postlink.1.pattern="{compiler.path}{compiler.c.elf.cmd}" {compiler.c.elf.flags} {compiler.c.elf.extra_flags} -o "{build.path}/{build.project_name}.elf" "{build.path}/{build.project_name}_joined.a" "-L{build.path}" -lm
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recipe.hooks.linking.postlink.1.pattern="{compiler.path}{compiler.c.elf.cmd}" {compiler.c.elf.flags} {compiler.c.elf.extra_flags} -o "{build.path}/{build.project_name}.elf" "{build.path}/{build.project_name}_joined.a" "-L{build.path}" -lm {compiler.ldflags}
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##
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## NEWLY INTRODUCED: Removing the joined library is required to avoid malformed archives that
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## would otherwise result when updating a pre-existing
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## joined archive file during a subsequent firmware build.
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##
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recipe.hooks.linking.postlink.2.pattern={tools.rm.cmd} "{build.path}/{build.project_name}_joined.a"
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recipe.hooks.linking.postlink.2.pattern={tools.rm_start.cmd} "{build.path}/{build.project_name}_joined.a" {tools.rm_end.cmd}
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################################################################################
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# Run the test executable as a build step
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@ -137,8 +145,23 @@ tools.avrdude.bootloader.pattern=
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tools.avrdude_remote.upload.pattern=
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tools.rm.cmd=rm -f
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tools.rm.cmd.windows=powershell.exe Remove-Item -LiteralPath
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# Unlike rm on Unix-like systems, powershell's 'rm' command does not ignore non existing files
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# and terminates in error when the file that is to be removed cannot be found.
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# This would result in a premature termination of the overall build process that
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# must be prevented.
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#
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# To allow for possibly non-existing files being passed to command 'rm' we force
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# powershell to ignore the resulting error and pass error value zero
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# back to the build system.
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#
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# For this to work, the rm-command is split up in two
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# parts (start/end). The second (end) part is only required on Windows.
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#
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tools.rm_start.cmd=rm -f
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tools.rm_end.cmd=
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tools.rm_start.cmd.windows=powershell.exe rm -ErrorAction SilentlyContinue -LiteralPath
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tools.rm_end.cmd.windows= ; exit 0
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# USB Default Flags
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# Default blank usb manufacturer will be filled in at compile time
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