create main binary

.gitignore

@@ -4,3 +4,4 @@ build/
 Makefile
 .qmake.stash
 .vscode/settings.json
+qtdebugger

qtdebugger.pro

@@ -36,3 +36,18 @@ HEADERS += \
 
 FORMS += \
 	ui/debugwindow.ui
+
+# main binary target
+qtdebugger.depends = src/main.c
+qtdebugger.commands = $$QMAKE_CC src/main.c -o qtdebugger
+qtdebugger.path = /usr/local/bin/
+qtdebugger.files = qtdebugger
+QMAKE_EXTRA_TARGETS += qtdebugger
+PRE_TARGETDEPS += qtdebugger
+
+# install targets
+target.path = /usr/local/lib/
+
+INSTALLS += \
+	qtdebugger \
+	target

src/main.c

@@ -0,0 +1,22 @@
+
+#include <errno.h>
+#include <string.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+
+int main(int argc, char** argv) {
+
+	if( argc < 2 ) {
+		fprintf(stderr, "missing arguments\n");
+		return 1;
+	}
+
+	setenv("LD_PRELOAD", "/usr/local/lib/libqtdebugger.so", 1);
+
+	// should never return
+	execv(argv[1], argv+1);
+
+	fprintf(stderr, "exec failed: %s\n", strerror(errno));
+	return 2;
+}