co2minimon

commit 8eeae9f8955ad6dd121f30b651921456bc13f291
parent 4646200c37d152830ee44c219d9facaf08ef93ba
Author: Amin Mesbah <dev@aminmesbah.com>
Date:   Fri, 14 Jan 2022 23:35:49 -0800

Clean things up and add build script

Diffstat:
M
.gitignore
 | 
2
+-
A
build.sh
 | 
71
+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
M
main.c
 | 
8
+++++---

3 files changed, 77 insertions(+), 4 deletions(-)
diff --git a/.gitignore b/.gitignore
@@ -1 +1 @@
-a.out
+out/
diff --git a/build.sh b/build.sh
@@ -0,0 +1,71 @@
+#!/usr/bin/env bash
+
+set -e                     # fail if any command has a non-zero exit status
+set -u                     # fail if any undefined variable is referenced
+set -o pipefail            # propagate failure exit status through a pipeline
+shopt -s globstar nullglob # enable recursive and null globbing
+
+exe_name="co2minimon"
+build_dir="./out"
+
+cc=clang
+source_files=("main.c")
+cflags=("-std=c11" "-D_XOPEN_SOURCE=700" "-Wall" "-Wextra" "-Wpedantic" "-Wsign-compare" "-Wswitch-enum")
+debug_flags=("-g" "-O0")
+release_flags=("-O2" "-Os")
+
+build_release() {
+    release_dir="${build_dir}/release"
+    release_path="${release_dir}/${exe_name}"
+    mkdir -p "$release_dir"
+    (
+        set -x;
+        "$cc" "${cflags[@]}" "${release_flags[@]}" "${source_files[@]}" -o "$release_path"
+    )
+}
+
+build_debug() {
+    debug_dir="${build_dir}/debug"
+    debug_path="${debug_dir}/${exe_name}"
+    mkdir -p "$debug_dir"
+    (
+        set -x;
+        "$cc" "${cflags[@]}" "${debug_flags[@]}" "${source_files[@]}" -o "$debug_path"
+    )
+}
+
+usage() {
+    echo "build.sh - Build ${exe_name}"
+    echo " "
+    echo "build.sh [options]"
+    echo " "
+    echo "options:"
+    echo "-h, --help  show help"
+    echo "-d, --debug build only debug executable"
+}
+
+debug_build=false
+
+while [[ $# -gt 0 ]]; do
+    case "$1" in
+        -h|--help)
+            usage
+            exit 0
+            ;;
+        -d|--debug)
+            debug_build=true
+            shift
+            ;;
+        *)
+            break
+            ;;
+    esac
+done
+
+if [ "$debug_build" = true ]; then
+    build_debug
+else
+    build_release
+fi
+
+exit 0
diff --git a/main.c b/main.c
@@ -7,6 +7,7 @@
 #include <fcntl.h>
 #include <signal.h>
 #include <sys/ioctl.h>
+#include <sys/stat.h>
 #include <unistd.h>
 
 // https://www.kernel.org/doc/Documentation/hid/hidraw.txt
@@ -16,6 +17,7 @@ static bool running = true;
 
 void stop_running(int sig)
 {
+    (void)sig;
     running = false;
 }
 
@@ -25,7 +27,7 @@ int main(void)
 {
     {
         struct sigaction act = {
-            .sa_handler = stop_running;
+            .sa_handler = stop_running,
         };
         sigaction(SIGINT, &act, NULL);
         sigaction(SIGKILL, &act, NULL);
@@ -35,8 +37,8 @@ int main(void)
     // NOTE: Included udev rules create this symlink to the appropriate hidraw
     // entry.
     const char *hid_file_path         = "/dev/co2mini0";
-    const char *temperature_file_path = "/tmp/co2mini_temp";
-    const char *co2_file_path         = "/tmp/co2mini_co2";
+    const char *temperature_file_path = "/tmp/co2minimon_temp";
+    const char *co2_file_path         = "/tmp/co2minimon_co2";
 
     int device_handle = -1;