Add support for FreeBSD.

Makefile

@@ -21,12 +21,12 @@
 # make DEBUG=true HOST=arm
 
 ifeq "$(HOST)" "arm"
-    CXX=arm-linux-gnueabihf-g++
+    CXX?=arm-linux-gnueabihf-g++
     STRIP=arm-linux-gnueabihf-strip
     BUILD=build_arm
 	DEBARCH=armhf
 else
-    CXX=g++
+    CXX?=g++
     STRIP=strip
 #--strip-unneeded --remove-section=.comment --remove-section=.note
     BUILD=build
@@ -37,8 +37,13 @@ ifeq "$(DEBUG)" "true"
     DEBUG_FLAGS=-O0 -ggdb -fsanitize=address -fno-omit-frame-pointer -fprofile-arcs -ftest-coverage
     STRIP_BINARY=
     BUILD:=$(BUILD)_debug
-    DEBUG_LDFLAGS=-lasan -lgcov --coverage
-    GCOV=gcov
+    ifeq '' '$(findstring clang++,$(CXX))'
+		DEBUG_LDFLAGS=-fsanitize=address --coverage
+		GCOV?=llvm-cov gcov
+	else
+		DEBUG_LDFLAGS=-lasan -lgcov --coverage
+		GCOV?=gcov
+    endif
 else
     DEBUG_FLAGS=-Os
     STRIP_BINARY=$(STRIP) $(BUILD)/wmbusmeters

README.md

@@ -7,7 +7,7 @@ MQTT, curled to a REST api, inserted into a database or stored in a log file.
 
 [FAQ/WIKI/MANUAL pages](https://weetmuts.github.io/wmbusmeterswiki/)
 
-The program runs on GNU/Linux, MacOSX and Raspberry Pi.
+The program runs on GNU/Linux, MacOSX, FreeBSD, and Raspberry Pi.
 
 | OS           | Status           |
 | ------------ |:-------------:|
@@ -321,7 +321,7 @@ With an rtlwmbus or amb8465 dongle: `wmbusmeters --listento=c1,t1 auto`
 
 With an imst871a dongle: `wmbusmeters --listento=c1 auto`
 
-# Builds and runs on GNU/Linux and MacOSX (with recent XCode)
+# Builds and runs on GNU/Linux MacOSX (with recent XCode), and FreeBSD
 
 `make && make test`
 
@@ -335,6 +335,8 @@ Binary generated: `./build_arm/wmbusmeters`
 
 Binary generated: `./build_debug/wmbusmeters`
 
+Debug builds only work on FreeBSD if the compiler is LLVM. If your system default compiler is gcc, set `CXX=clang++` to the build environment to force LLVM to be used.
+
 `make DEBUG=true HOST=arm`
 
 Binary generated: `./build_arm_debug/wmbusmeters`

src/meters.cc

@@ -23,6 +23,7 @@
 
 #include<algorithm>
 #include<memory.h>
+#include<time.h>
 
 MeterCommonImplementation::MeterCommonImplementation(WMBus *bus, MeterInfo &mi,
                                                      MeterType type, int manufacturer) :

src/shell.cc

@@ -23,7 +23,7 @@
 #include <memory.h>
 #include <pthread.h>
 #include <sys/types.h>
-#if defined(__APPLE__) && defined(__MACH__)
+#if defined(__APPLE__) && defined(__MACH__) or defined(__FreeBSD__)
 #include <sys/wait.h>
 #else
 #include <wait.h>
@@ -61,7 +61,7 @@ void invokeShell(string program, vector<string> args, vector<string> envs)
     if (pid == 0) {
         // I am the child!
         close(0); // Close stdin
-#if defined(__APPLE__) && defined(__MACH__)
+#if (defined(__APPLE__) && defined(__MACH__)) || defined(__FreeBSD__)
         execve(program.c_str(), (char*const*)&argv[0], (char*const*)&env[0]);
 #else
         execvpe(program.c_str(), (char*const*)&argv[0], (char*const*)&env[0]);
@@ -130,7 +130,7 @@ bool invokeBackgroundShell(string program, vector<string> args, vector<string> e
         close(link[1]);
         close(0); // Close stdin
 
-#if defined(__APPLE__) && defined(__MACH__)
+#if (defined(__APPLE__) && defined(__MACH__)) || defined(__FreeBSD__)
         execve(program.c_str(), (char*const*)&argv[0], (char*const*)&env[0]);
 #else
         execvpe(program.c_str(), (char*const*)&argv[0], (char*const*)&env[0]);