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py/mkrules.mk: Don't strip binary if STRIP variable is unset.

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This provides a way to build a non-DEBUG host binary that still has symbols
and debug information.

Document this for the unix port, and update a comment in the unix port
Makefile.

This work was funded through GitHub Sponsors.

Signed-off-by: Angus Gratton <angus@redyak.com.au>
This commit is contained in:
Angus Gratton 2023-09-20 17:29:12 +10:00 committed by Damien George
parent 58f63497e5
commit 2fcd28f713
3 changed files with 18 additions and 2 deletions
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4
ports/unix/Makefile
View File

@ -59,8 +59,8 @@ endif
# Remove unused sections. # Remove unused sections.
COPT += -fdata-sections -ffunction-sections COPT += -fdata-sections -ffunction-sections
# Always enable symbols -- They're occasionally useful, and don't make it into the # Note: Symbols and debug information will still be stripped from the final binary
# final .bin/.hex/.dfu so the extra size doesn't matter. # unless "DEBUG=1" or "STRIP=" is passed to make, see README.md for details.
CFLAGS += -g CFLAGS += -g
ifndef DEBUG ifndef DEBUG

14
ports/unix/README.md
View File

@ -72,3 +72,17 @@ deplibs`. To actually enable/disable use of dependencies, edit the
`ports/unix/mpconfigport.mk` file, which has inline descriptions of the `ports/unix/mpconfigport.mk` file, which has inline descriptions of the
options. For example, to build the SSL module, `MICROPY_PY_SSL` should be options. For example, to build the SSL module, `MICROPY_PY_SSL` should be
set to 1. set to 1.
Debug Symbols
-------------
By default, builds are stripped of symbols and debug information to save size.
To build a debuggable version of the Unix port, there are two options
1. Run `make [other arguments] DEBUG=1`. Note setting `DEBUG` also reduces the
optimisation level, so it's not a good option for builds that also want the
best performance.
2. Run `make [other arguments] STRIP=`. Note that the value of `STRIP` is
empty. This will skip the build step that strips symbols and debug
information, but changes nothing else in the build configuration.

2
py/mkrules.mk
View File

@ -212,7 +212,9 @@ $(BUILD)/$(PROG): $(OBJ)
# we may want to compile using Thumb, but link with non-Thumb libc. # we may want to compile using Thumb, but link with non-Thumb libc.
$(Q)$(CC) -o $@ $^ $(LIB) $(LDFLAGS) $(Q)$(CC) -o $@ $^ $(LIB) $(LDFLAGS)
ifndef DEBUG ifndef DEBUG
ifdef STRIP
$(Q)$(STRIP) $(STRIPFLAGS_EXTRA) $@ $(Q)$(STRIP) $(STRIPFLAGS_EXTRA) $@
endif
endif endif
$(Q)$(SIZE) $$(find $(BUILD) -path "$(BUILD)/build/frozen*.o") $@ $(Q)$(SIZE) $$(find $(BUILD) -path "$(BUILD)/build/frozen*.o") $@