7 files changed, 39 insertions, 0 deletions
diff --git a/CMakeLists.txt b/CMakeLists.txt
index 08d3226..42c46ac 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -4,6 +4,13 @@ set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wall -Wextra -pedantic -Wno-unused-para
 set(CMAKE_CXX_STANDARD 11)
 set(CMAKE_CXX_EXTENSIONS Off)
 
+set(COMMON_FILES
+    "src/common.cpp"
+)
+
+add_library(common SHARED ${COMMON_FILES})
+add_subdirectory(src)
+
 enable_testing()
 add_subdirectory(test)
 
diff --git a/src/2015/day1/aoc.cpp b/src/2015/day1/aoc.cpp
new file mode 100644
index 0000000..e69de29
--- /dev/null
+++ b/src/2015/day1/aoc.cpp
diff --git a/src/2015/day1/aoc.h b/src/2015/day1/aoc.h
new file mode 100644
index 0000000..6f70f09
--- /dev/null
+++ b/src/2015/day1/aoc.h
@@ -0,0 +1 @@
+#pragma once
diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt
new file mode 100644
index 0000000..7b0b9c7
--- /dev/null
+++ b/src/CMakeLists.txt
@@ -0,0 +1,6 @@
+set(SOLUTION_FILES
+  "2015/day1/aoc.cpp"
+)
+
+add_library(solution SHARED ${SOLUTION_FILES})
+target_include_directories(solution PRIVATE ${PROJECT_SOURCE_DIR}/src)
diff --git a/src/common.cpp b/src/common.cpp
new file mode 100644
index 0000000..8ac3a96
--- /dev/null
+++ b/src/common.cpp
@@ -0,0 +1,13 @@
+#include "common.h"
+
+#include <fcntl.h>
+#include <sys/mman.h>
+#include <sys/stat.h>
+
+line_view load_file(const char* path) {
+  return {nullptr, 0};
+}
+
+line_view next_line(const char* file, size_t offset) {
+  return {nullptr, 0};
+}
diff --git a/src/common.h b/src/common.h
new file mode 100644
index 0000000..f242f48
--- /dev/null
+++ b/src/common.h
@@ -0,0 +1,11 @@
+#pragma once
+
+#include <stdlib.h>
+
+struct line_view {
+  char* line;
+  size_t length;
+};
+
+line_view load_file(const char*);
+line_view next_line(const char*, size_t);
diff --git a/test/CMakeLists.txt b/test/CMakeLists.txt
index cce5378..8b4c564 100644
--- a/test/CMakeLists.txt
+++ b/test/CMakeLists.txt
@@ -5,6 +5,7 @@ set(TEST_FILES
 
 add_executable(aoc ${TEST_FILES})
 target_include_directories(aoc PRIVATE ${PROJECT_SOURCE_DIR}/include)
+target_link_libraries(aoc PRIVATE common solution)
 add_test(NAME test_aoc COMMAND aoc)