acpi: implement -ctV, fix recursion, plug a small leak * acpi_callback had blindly assumed that a path of 26 chars or more was the right depth; rely on depth from dirtree root * acpi -c shows cooling device state some backlights are set up so that they will report dimmer as higher, but that's a hardware issue that can't be sanely worked around. * acpi -t shows temperatures this implementation will pick up fan, battery temperatures, etc. (but currently not hwmon-type temperatures, or hdd temps; acpi 1.7 does not measure these either) we handle milli-C (typical) and deci-C (I've seen this on Qualcomm batteries, and not yet anywhere else) we do *not* handle deci-K yet * acpi -V shows all sensors * without saving the result of dirtree_path() to free later, we had a slow leak. all callbacks call this once, so save it in GLOBALS() acpi -t happens to need this anyhow, though using openat()/readall() instead of readfile() would work.

# Toybox configuration file.

# This sets environment variables used by scripts/make.sh

# A synonym.
[ -z "$CROSS_COMPILE" ] && CROSS_COMPILE="$CROSS"
[ -z "$CFLAGS" ] && CFLAGS="-Wall -Wundef -Wno-char-subscripts"
# Required for our expected ABI. we're 8-bit clean thus "char" must be unsigned.
CFLAGS="$CFLAGS -funsigned-char"

[ -z "$OPTIMIZE" ] && OPTIMIZE="-Os -ffunction-sections -fdata-sections -fno-asynchronous-unwind-tables"
[ -z "$LDOPTIMIZE" ] && LDOPTIMIZE="-Wl,--gc-sections"
[ -z "$CC" ] && CC=cc
[ -z "$STRIP" ] && STRIP=strip

# If HOSTCC needs CFLAGS, add them to the variable ala HOSTCC="blah-cc --static"
[ -z "$HOSTCC" ] && HOSTCC=gcc