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Add --warn-undefined-variables to MAKEFLAGS

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Fix warnings where undefined vars are used.

Make Kconfig emit "FOO=" for unset bool options
To ensure make variables are always defined, even if empty.

When writing auto.conf, include symbols disabled by dependency to make sure all make variables are always defined.

Fixes espressif/esp-idf#137

Cherry-picked from https://github.com/espressif/esp-idf/pull/138
This commit is contained in:
Deomid Ryabkov
2016-12-03 22:11:22 +00:00
committed by Angus Gratton
parent 11a87ca811
commit 9903ea1c11
21 changed files with 89 additions and 49 deletions
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7
components/esp32/component.mk
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@@ -3,8 +3,9 @@
#
COMPONENT_SRCDIRS := . hwcrypto
ifndef CONFIG_NO_BLOBS
LIBS := core rtc net80211 pp wpa smartconfig coexist wps wpa2 phy
LIBS ?=
ifneq ("$(CONFIG_NO_BLOBS)","y")
LIBS += core rtc net80211 pp wpa smartconfig coexist wps wpa2 phy
endif
#Linker scripts used to link the final application.
@@ -22,7 +23,7 @@ ifeq ("$(CONFIG_NEWLIB_NANO_FORMAT)","y")
LINKER_SCRIPTS += esp32.rom.nanofmt.ld
endif
ifndef CONFIG_SPI_FLASH_ROM_DRIVER_PATCH
ifneq ("$(CONFIG_SPI_FLASH_ROM_DRIVER_PATCH)","y")
LINKER_SCRIPTS += esp32.rom.spiflash.ld
endif