Working Window

build.sh

@@ -0,0 +1,139 @@
+#!/bin/sh
+
+#set -x
+
+ERR() {
+    printf '[ERROR] %s\n' "$1"
+    [ "$2" ] && exit "$2"
+}
+
+INFO() {
+    printf '[INFO] %s\n' "$1"
+    [ "$2" ] && exit "$2"
+}
+
+: "${CC:=gcc}"
+
+SRCDIR='src'
+OBJDIR='.obj'
+BINDIR='bin'
+TARGET=''
+
+clena_op='N'
+debug_op='N'
+tags_op='N'
+deps_op='Y'
+
+while [ "$1" ]
+do
+    case "$1" in
+        --no-debug) debug_op='N';;
+        --debug|-d) debug_op='Y';;
+        --clean|-c) clean_op='Y';;
+        --tags|-t)  tags_op='Y';;
+        --no-deps)  deps_op='N';;
+
+        --srcdir|-sd) SRCDIR="$2"; shift ;;
+        --objdir|-od) OBJDIR="$2"; shift ;;
+        --bindir|-bd) BINDIR="$2"; shift ;;
+        --cc)         CC="$2"; shift     ;;
+
+        -*|--*) ERR "Invalid flag: $1" 1;;
+
+        *) TARGET="$1" ;;
+    esac
+    shift
+done
+
+if [ "$clean_op" = 'Y' ]
+then
+    rm -rfv "$OBJDIR" "$BINDIR"
+    exit 0
+fi
+
+if [ "$tags_op" = 'Y' ]
+then
+    INFO 'Genereting etags for all .c and .h files in project'
+    find -name '*.c' -type f -exec etags -a {} \;
+    find -name '*.h' -type f -exec etags -a {} \;
+    exit 0
+fi
+
+if [ -z "$TARGET" ]
+then
+    ERR '*MUST* Provide the target as the last argument.' 1
+fi
+
+INCS="-I include/"
+
+CFLAGS="${CFLAGS} -m64 ${INCS} -pedantic -Wall -Wextra -Wshadow
+-Wcast-align -Wunused -Wconversion -Wmisleading-indentation
+-Wduplicated-cond -Wduplicated-branches -Wlogical-op
+-Wdouble-promotion -Wformat=2 -Wbad-function-cast
+-Wmissing-declarations -Wmissing-parameter-type
+-Wmissing-prototypes -Wnested-externs -Werror"
+
+CC="${CC} -std=c99"
+
+LDFLAGS="${LDFLAGS} -lc -lm"
+
+if [ "$debug_op" = 'Y' ]
+then
+	CFLAGS="${CFLAGS} -Og -g"
+	LDFLAGS="${LDFLAGS} -g"
+else
+	CFLAGS="${CFLAGS} -O3"
+fi
+
+CFLAGS="${CFLAGS} -Og -g"
+
+compile() {
+    obj="${OBJDIR}/$1.o"
+    src="${SRCDIR}/$1.c"
+    [ -d "$(dirname "$obj")" ] || mkdir -pv "$(dirname "$obj")"
+    # [ "$obj" -ot "$src" ] || { INFO "$obj Already up to date" ; return 0; }
+    INFO "[CC] $obj $src"
+    $CC -c $CFLAGS -o "$obj" "$src"
+}
+
+link() {
+    bin="${BINDIR}/$1"
+    objs="${OBJDIR}/$1.o"
+    deps="$2"
+
+    for dep in $deps
+    do
+        objs="$objs $OBJDIR/$dep.o"
+    done
+
+    [ -d "$BINDIR" ] || mkdir -pv "$BINDIR"
+
+    for obj in $objs
+    do
+        # [ "$bin" -ot "$obj" ] && {
+            INFO "[LD] $bin $objs";
+            $CC $LDFLAGS -o "$bin" $objs;
+            return 0;
+        # }
+    done
+    INFO "$bin Already up to date"
+    return 0
+}
+
+deps="$(grep '#include ".*"' "${SRCDIR}"/"$TARGET".c | \
+        sed 's/#include "\(.*\)"/\1/' | \
+        tr -d '.h')"
+
+compile "$TARGET" || exit 1
+
+if [ "$deps_op" = 'Y' ]
+then
+    for dep in $deps
+    do
+	compile "$dep" || exit 1
+    done
+fi
+
+link "$TARGET" "$dep" || exit 1
+
+exec ./"$BINDIR"/"$TARGET"

src/main.c

@@ -0,0 +1,65 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <stdint.h>
+#include <stdbool.h>
+
+#include <SDL2/SDL.h>
+
+#define SCE(err)						\
+	if ( (err) < 0 ) {						\
+		fprintf(stderr, "SDL Error: %s\n", SDL_GetError());	\
+		exit(EXIT_FAILURE);					\
+	}
+
+#define SCP(ptr)						\
+	if ( (ptr) == NULL ) {						\
+		fprintf(stderr, "SDL Error: %s\n", SDL_GetError());	\
+		exit(EXIT_FAILURE);					\
+	}
+
+int32_t
+main(int32_t argc, char **argv)
+{
+	(void) argc; (void) argv;
+
+	SDL_Window *win = NULL;
+	SDL_Renderer *rdr = NULL;
+
+	SCE(SDL_Init(SDL_INIT_VIDEO));
+	win = SDL_CreateWindow("Hello World",
+			       SDL_WINDOWPOS_UNDEFINED,
+			       SDL_WINDOWPOS_UNDEFINED,
+			       600, 800,
+			       SDL_WINDOW_RESIZABLE
+		);
+	SCP(win);
+
+	rdr = SDL_CreateRenderer(win, -1, SDL_RENDERER_ACCELERATED);
+	if ( rdr == NULL ) {
+		printf("Using software acceleration: %s\n", SDL_GetError());
+		rdr = SDL_CreateRenderer(win, -1, SDL_RENDERER_SOFTWARE);
+	}
+	SCP(rdr);
+
+	uint64_t i = 0;
+	bool quit = false;
+	while ( quit == false ) {
+		SDL_Event e = {0};
+		while ( SDL_PollEvent(&e) ) {
+			switch ( e.type ) {
+			case SDL_QUIT: {
+				quit = true;
+			} break;
+			}
+		}
+
+		SCE(SDL_SetRenderDrawColor(rdr, i & 0xFF, 0, 0, 1));
+		SCE(SDL_RenderClear(rdr));
+		SDL_RenderPresent(rdr);
+		++i;
+	}
+
+	SDL_DestroyWindow(win);
+	SDL_Quit();
+	exit(EXIT_SUCCESS);
+}