Version 4.6.2: Re-enable global /LTCG on Windows.

With /LTCGOUT: empty path it should not try generating .iobj file,
and work on both 32 bit and 64 bit build with all static libs.

Telegram/CMakeLists.txt

@@ -5,7 +5,7 @@
 # https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
 
 add_executable(Telegram WIN32 MACOSX_BUNDLE)
-init_non_host_target(Telegram ltcg)
+init_non_host_target(Telegram)
 
 add_subdirectory(lib_rpl)
 add_subdirectory(lib_crl)

Telegram/cmake/lib_ffmpeg.cmake

@@ -6,7 +6,7 @@
 
 add_library(lib_ffmpeg OBJECT)
 add_library(desktop-app::lib_ffmpeg ALIAS lib_ffmpeg)
-init_target(lib_ffmpeg ltcg)
+init_target(lib_ffmpeg)
 
 nice_target_sources(lib_ffmpeg ${src_loc}
 PRIVATE

Telegram/cmake/td_mtproto.cmake

@@ -5,7 +5,7 @@
 # https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
 
 add_library(td_mtproto OBJECT)
-init_non_host_target(td_mtproto ltcg)
+init_non_host_target(td_mtproto)
 add_library(tdesktop::td_mtproto ALIAS td_mtproto)
 
 target_precompile_headers(td_mtproto PRIVATE ${src_loc}/mtproto/mtproto_pch.h)

Telegram/cmake/td_scheme.cmake

@@ -5,7 +5,7 @@
 # https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
 
 add_library(td_scheme OBJECT)
-init_non_host_target(td_scheme ltcg)
+init_non_host_target(td_scheme)
 add_library(tdesktop::td_scheme ALIAS td_scheme)
 
 include(cmake/generate_scheme.cmake)

Telegram/cmake/td_ui.cmake

@@ -4,8 +4,8 @@
 # For license and copyright information please follow this link:
 # https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
 
-add_library(td_ui STATIC)
-init_non_host_target(td_ui ltcg)
+add_library(td_ui OBJECT)
+init_non_host_target(td_ui)
 add_library(tdesktop::td_ui ALIAS td_ui)
 
 include(lib_ui/cmake/generate_styles.cmake)