Move lto out of default flags

CMakeLists.txt

@@ -114,7 +114,6 @@ if(CMAKE_PROJECT_NAME STREQUAL PROJECT_NAME)
 
     $<$<CONFIG:RELEASE>:-O3>
     $<$<CONFIG:RELEASE>:-fmerge-all-constants>
-    $<$<CONFIG:RELEASE>:-flto=thin>
     $<$<CONFIG:DEBUG>:-shared-libsan>
     )
 
@@ -125,7 +124,6 @@ if(CMAKE_PROJECT_NAME STREQUAL PROJECT_NAME)
     $<$<CONFIG:DEBUG>:-shared-libsan>
     $<$<CONFIG:RELEASE>:-fsanitize-address-globals-dead-stripping>
     $<$<CONFIG:DEBUG>:-fsanitize=address>
-    $<$<CONFIG:RELEASE>:-flto=thin>
     $<$<CONFIG:RELEASE>:-s>
     # Do not link against shared libraries
     #--static

core/CMakeLists.txt

@@ -18,7 +18,7 @@
 include_directories(${CMAKE_CURRENT_SOURCE_DIR}/include)
 include_directories(${LIBSERENE_INCLUDE_DIR})
 
-add_subdirectory(lib)
+add_subdirectory(lib/serene)
 
 
 get_target_property(LIBNAME Serene::core CMAKE_PKG_NAME)

core/lib/CMakeLists.txt

@@ -1,67 +0,0 @@
-# Serene Programming Language
-#
-# Copyright (c) 2019-2022 Sameer Rahmani <lxsameer@gnu.org>
-#
-# This program is free software; you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation, version 2.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-
-#TODO: To support MacOS look into cmake's public headers
-# https://cmake.org/cmake/help/latest/prop_tgt/PUBLIC_HEADER.html
-
-# Prevent any future RPATH issue on Posix
-if(NOT APPLE)
-  set(CMAKE_INSTALL_RPATH $ORIGIN)
-endif()
-
-set(SOURCES serene.core.cpp)
-add_library(core STATIC
-  ${SOURCES})
-
-#add_custom_target(serene.core)
-# Create an ALIAS target. This way if we mess up the name
-# there will be an cmake error inseat of a linker error which is harder
-# to understand. So any binary that wants to use serene has to
-# use `Serene::core` alias instead
-add_library(Serene::core ALIAS core)
-
-set_target_properties(core PROPERTIES
-  VERSION ${PROJECT_VERSION}
-  SOVERSION ${PROJECT_VERSION_MAJOR}
-  CMAKE_PKG_NAME SereneCore
-  # Warn on unused libs
-  LINK_WHAT_YOU_USE TRUE
-  CXX_INCLUDE_WHAT_YOU_USE "${iwyu_path}"
-  C_INCLUDE_WHAT_YOU_USE "${iwyu_path}"
-  # LTO support
-  INTERPROCEDURAL_OPTIMIZATION TRUE)
-
-if(SERENE_ENABLE_TIDY)
-  set_target_properties(core PROPERTIES CXX_CLANG_TIDY ${CLANG_TIDY_PATH})
-endif()
-
-if (CPP_20_SUPPORT)
-  target_compile_features(core PUBLIC cxx_std_20)
-else()
-  target_compile_features(core PUBLIC cxx_std_17)
-endif()
-
-# We need this directory, and users of our library will need it too
-target_include_directories(core PUBLIC "$<BUILD_INTERFACE:${INCLUDE_DIR}>")
-target_include_directories(core PUBLIC "$<BUILD_INTERFACE:${PROJECT_BINARY_DIR}>")
-
-# Generate the export.h
-include(GenerateExportHeader)
-
-generate_export_header(core EXPORT_FILE_NAME ${PROJECT_BINARY_DIR}/include/serene/core/export.h)
-
-
-target_link_libraries(core PRIVATE)