From 7fae56dd121069cc5461b75214154e84c89069e5 Mon Sep 17 00:00:00 2001
From: Daniel Friesel <derf@finalrewind.org>
Date: Wed, 29 Dec 2021 17:49:47 +0100
Subject: Prepare for BME680 BSEC support

---
 .gitignore                  |  1 +
 Makefile                    |  6 ++++++
 src/arch/posix/Makefile.inc |  5 ++++-
 src/driver/Kconfig          | 10 ++++++++++
 4 files changed, 21 insertions(+), 1 deletion(-)

diff --git a/.gitignore b/.gitignore
index 3a2293e..2648f2b 100644
--- a/.gitignore
+++ b/.gitignore
@@ -18,3 +18,4 @@
 /src/app/prototest/prototest_local.cc.inc
 src/driver/dummy.cc
 include/driver/dummy.h
+include/arch/*/driver/bme680-*/*
diff --git a/Makefile b/Makefile
index b8707af..5850088 100644
--- a/Makefile
+++ b/Makefile
@@ -17,6 +17,7 @@ endif
 quote="
 app_dir = $(subst ${quote},,${CONFIG_app})
 arch_dir = $(subst ${quote},,${CONFIG_arch})
+bsec_dir = $(subst ${quote},,${CONFIG_driver_bme680_bsec_path})
 
 INCLUDES = -Iinclude -Iinclude/arch/${arch_dir}
 CFLAGS = -std=c99
@@ -27,6 +28,7 @@ QUIET = @
 ASM_TARGETS =
 C_TARGETS =
 CXX_TARGETS = src/app/${app_dir}/main.cc src/object/cpp_helpers.cc src/object/outputstream.cc
+SO_TARGETS =
 
 ifdef verbose
 	QUIET =
@@ -64,6 +66,10 @@ ifdef CONFIG_driver_bme680
 	CXX_TARGETS += src/driver/bme680.cc src/driver/bme680_util.cc
 endif
 
+ifdef CONFIG_driver_bme680_bsec
+	SO_TARGETS += include/arch/${arch_dir}/driver/${bsec_dir}/libalgobsec.a
+endif
+
 ifdef CONFIG_driver_ccs811
 	CXX_TARGETS += src/driver/ccs811.cc
 endif
diff --git a/src/arch/posix/Makefile.inc b/src/arch/posix/Makefile.inc
index 539e5f4..b06a29d 100644
--- a/src/arch/posix/Makefile.inc
+++ b/src/arch/posix/Makefile.inc
@@ -41,7 +41,7 @@ ifdef CONFIG_arch_posix_driver_uptime
 	CXX_TARGETS += src/arch/posix/driver/uptime.cc
 endif
 
-OBJECTS = ${CXX_TARGETS:.cc=.o} ${C_TARGETS:.c=.o}
+OBJECTS = ${SO_TARGETS:.a=.so} ${CXX_TARGETS:.cc=.o} ${C_TARGETS:.c=.o}
 
 ifneq (${gpio_trace}, )
 	COMMON_FLAGS += -DGPIO_TRACE
@@ -56,6 +56,9 @@ endif
 %.o: %.c | include/config.h
 	${QUIET}${CC} ${INCLUDES} ${COMMON_FLAGS} ${CFLAGS} -c -o $@ ${@:.o=.c}
 
+%.so : %.a | include/config.h
+	${QUIET}${CC} -shared -o $@ -Wl,--whole-archive ${@:.so=.a} -Wl,--no-whole-archive
+
 build/system.elf: ${OBJECTS}
 	${QUIET}mkdir -p build
 	${QUIET}${CXX} ${INCLUDES} ${COMMON_FLAGS} ${CXXFLAGS} \
diff --git a/src/driver/Kconfig b/src/driver/Kconfig
index 3ff88e7..b626776 100644
--- a/src/driver/Kconfig
+++ b/src/driver/Kconfig
@@ -35,6 +35,16 @@ config driver_bme680
 bool "BME680 TPH+IAQ Sensor"
 depends on meta_driver_i2c && !driver_bme280
 
+config driver_bme680_bsec
+bool "with BSEC (proprietary library for IAQ calculation)"
+depends on driver_bme680
+
+config driver_bme680_bsec_path
+string "BSEC library path"
+default "bme680-bsec" if arch_msp430fr5994lp
+default "bme680-bsec-armv6" if arch_posix
+depends on driver_bme680_bsec && (arch_msp430fr5994lp || arch_posix)
+
 config driver_ccs811
 bool "CCS811 VOC Sensor"
 depends on meta_driver_i2c
-- 
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