Add MinSizeRel support on Linux

Allows to build Telegram itself with multi-config generator as well as all dependencies with -Os optimizations

CMakeLists.txt

@@ -12,6 +12,10 @@ include(cmake/validate_special_target.cmake)
 include(cmake/version.cmake)
 desktop_app_parse_version(Telegram/build/version)
 
+if (NOT DEFINED CMAKE_CONFIGURATION_TYPES)
+    set(configuration_types_init 1)
+endif()
+
 project(Telegram
     LANGUAGES C CXX
     VERSION ${desktop_app_version_cmake}
@@ -23,6 +27,12 @@ if (APPLE)
     enable_language(OBJC OBJCXX)
 endif()
 
+if (configuration_types_init
+    AND CMAKE_CONFIGURATION_TYPES
+    AND NOT MinSizeRel IN_LIST CMAKE_CONFIGURATION_TYPES)
+    set(CMAKE_CONFIGURATION_TYPES "${CMAKE_CONFIGURATION_TYPES};MinSizeRel" CACHE STRING "" FORCE)
+endif()
+
 set_property(DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR} PROPERTY VS_STARTUP_PROJECT Telegram)
 
 get_filename_component(third_party_loc "Telegram/ThirdParty" REALPATH)

Telegram/build/docker/centos_env/Dockerfile

@@ -44,7 +44,7 @@ WORKDIR /usr/src
 ENV AR=gcc-ar
 ENV RANLIB=gcc-ranlib
 ENV NM=gcc-nm
-ENV CFLAGS='{% if DEBUG %}-g{% endif %} -O3 {% if LTO %}-flto=auto -ffat-lto-objects{% endif %} -pipe -fPIC -fno-strict-aliasing -fexceptions -fasynchronous-unwind-tables -fno-omit-frame-pointer -mno-omit-leaf-frame-pointer -fhardened -Wno-hardened'
+ENV CFLAGS='{% if DEBUG %}-g{% endif %} {% if MINSIZE %}-Os{% else %}-O3{% endif %} {% if LTO %}-flto=auto -ffat-lto-objects{% endif %} -pipe -fPIC -fno-strict-aliasing -fexceptions -fasynchronous-unwind-tables -fno-omit-frame-pointer -mno-omit-leaf-frame-pointer -fhardened -Wno-hardened'
 ENV CXXFLAGS=$CFLAGS
 ENV LDFLAGS='-static-libstdc++ -static-libgcc -static-libasan -pthread -Wl,--push-state,--no-as-needed,-ldl,--pop-state -Wl,--as-needed -Wl,-z,muldefs'
 
@@ -527,6 +527,9 @@ RUN git clone -b n6.1.1 --depth=1 https://github.com/FFmpeg/FFmpeg.git \
 		--disable-network \
 		--disable-autodetect \
 		--disable-everything \
+{%- if MINSIZE %}
+		--enable-small \
+{%- endif %}
 		--enable-libdav1d \
 		--enable-libopenh264 \
 		--enable-libopus \

Telegram/build/docker/centos_env/gen_dockerfile.py

@@ -11,6 +11,7 @@ def checkEnv(envName, defaultValue):
 def main():
     print(Environment(loader=FileSystemLoader(dirname(__file__))).get_template("Dockerfile").render(
         DEBUG=checkEnv("DEBUG", True),
+        MINSIZE=checkEnv("MINSIZE", False),
         LTO=checkEnv("LTO", True),
         ASAN=checkEnv("ASAN", False),
         JOBS=checkEnv("JOBS", ""),