better cmake

CMakeLists.txt

@@ -1,4 +1,4 @@
-cmake_minimum_required(VERSION 3.1)
+cmake_minimum_required(VERSION 3.8)
 
 project(
   datetime
@@ -7,9 +7,6 @@ project(
   LANGUAGES CXX
 )
 
-# The library
-add_subdirectory(src)
-
 # The tests
 include(CTest)
 add_subdirectory(test//unit_tests)
@@ -19,12 +16,41 @@ if (sofa)
 endif()
 enable_testing()
 
-add_compile_options(
-  -Wall -Wextra -Werror -pedantic -W -Wshadow -march=native
-  $<$<CONFIG:RELEASE>:-O2 -march=native>
-  $<$<CONFIG:DEBUG>:-g -pg -Wdisabled-optimization -DDEBUG>
-)
-
 set(CMAKE_CXX_STANDARD 17)
 set(CMAKE_CXX_STANDARD_REQUIRED On)
 set(CMAKE_CXX_EXTENSIONS Off)
+add_compile_options(-Wall 
+  -Wextra 
+  -Werror 
+  -pedantic 
+  -W 
+  -Wshadow 
+  $<$<CONFIG:Release>:-O2>
+  $<$<CONFIG:Release>:-march=native>
+  $<$<CONFIG:Debug>:-g>
+  $<$<CONFIG:Debug>:-pg> 
+  $<$<CONFIG:Debug>:-Wdisabled-optimization>
+  )
+add_compile_definitions(
+  $<$<CONFIG:Debug>:DEBUG>
+)
+
+add_library(datetime)
+target_include_directories(datetime
+  PUBLIC
+    ${CMAKE_SOURCE_DIR}/include
+)
+
+add_subdirectory(src)
+
+# Install headers at: $PREFIX/datetime/...
+install(DIRECTORY ${CMAKE_SOURCE_DIR}/include/
+	DESTINATION include/datetime
+)
+
+# install library
+install(TARGETS datetime
+         ARCHIVE DESTINATION lib
+         LIBRARY DESTINATION lib
+         RUNTIME DESTINATION bin
+)

src/CMakeLists.txt

@@ -1,32 +1,13 @@
-add_library(datetime)
-
 target_sources(datetime
   PRIVATE
-    dat.cpp
-    datetime_io_core.cpp
-    modified_julian_day.cpp
-    month.cpp
-    strmonth.cpp
-    tpdateutc.cpp
-    twopartdates.cpp
-    utc2tai.cpp
-    ydoy_date.cpp
-    ymd_date.cpp
-)
-
-target_include_directories(datetime
-  PUBLIC
-    ${CMAKE_CURRENT_SOURCE_DIR}/../include
-)
-
-# Install headers at: $PREFIX/datetime/...
-install(DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR}/../include/
-	DESTINATION include/datetime
-)
-
-# install library
-install(TARGETS datetime
-         ARCHIVE DESTINATION lib
-         LIBRARY DESTINATION lib
-         RUNTIME DESTINATION bin
+    ${CMAKE_SOURCE_DIR}/src/dat.cpp
+    ${CMAKE_SOURCE_DIR}/src/datetime_io_core.cpp
+    ${CMAKE_SOURCE_DIR}/src/modified_julian_day.cpp
+    ${CMAKE_SOURCE_DIR}/src/month.cpp
+    ${CMAKE_SOURCE_DIR}/src/strmonth.cpp
+    ${CMAKE_SOURCE_DIR}/src/tpdateutc.cpp
+    ${CMAKE_SOURCE_DIR}/src/twopartdates.cpp
+    ${CMAKE_SOURCE_DIR}/src/utc2tai.cpp
+    ${CMAKE_SOURCE_DIR}/src/ydoy_date.cpp
+    ${CMAKE_SOURCE_DIR}/src/ymd_date.cpp
 )