[BUILD] rewrite CMake build system to track changes of source files

This change restructures the source code directories, separates shared
form non-shared application code and adds CMake dependencies. These
dependencies allow the tracking of changes and trigger a rebuild of
those build targets where changed files are involved.

WARNING: Note that the support of the DNBD3_SERVER_AFL build option is
not supported yet. Thus, the option should be never turned on.

1 files changed, 15 insertions, 0 deletions

diff --git a/src/shared/CMakeLists.txt b/src/shared/CMakeLists.txt
new file mode 100644
index 0000000..804d27c
--- /dev/null
+++ b/src/shared/CMakeLists.txt
@@ -0,0 +1,15 @@
+cmake_minimum_required(VERSION 3.10)
+
+# set the project name
+project(dnbd3-shared)
+
+# add compile option to get POLLRDHUP support for signals
+add_compile_options(-D_GNU_SOURCE)
+
+add_library(dnbd3-shared STATIC ${CMAKE_CURRENT_SOURCE_DIR}/crc32.c
+                                ${CMAKE_CURRENT_SOURCE_DIR}/fdsignal.c
+                                ${CMAKE_CURRENT_SOURCE_DIR}/log.c
+                                ${CMAKE_CURRENT_SOURCE_DIR}/serialize.c
+                                ${CMAKE_CURRENT_SOURCE_DIR}/sockhelper.c
+                                ${CMAKE_CURRENT_SOURCE_DIR}/timing.c)
+target_include_directories(dnbd3-shared PUBLIC ${PROJECT_INCLUDE_DIR})