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Add cmake option to skip comptime update

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In VS Code, comptime forces the game to be relinked even when no code
has changed. This is a bit of a nuisance when starting with the
debugger in the C++ extension, adding around 5 seconds of startup time
to the game.
This commit is contained in:
Eidolon 2024-01-28 14:54:28 -06:00
parent 22e2b97171
commit 0e307208f8
2 changed files with 20 additions and 20 deletions
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1
CMakeLists.txt
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@ -66,6 +66,7 @@ option(SRB2_CONFIG_TESTERS "Compile a build for testers." OFF)
option(SRB2_CONFIG_MOBJCONSISTANCY "Compile with MOBJCONSISTANCY defined." OFF)
option(SRB2_CONFIG_PACKETDROP "Compile with PACKETDROP defined." OFF)
option(SRB2_CONFIG_ZDEBUG "Compile with ZDEBUG defined." OFF)
option(SRB2_CONFIG_SKIP_COMPTIME "Skip regenerating comptime. To speed up iterative debug builds in IDEs." OFF)
# SRB2_CONFIG_PROFILEMODE is probably superceded by some CMake setting.
option(SRB2_CONFIG_PROFILEMODE "Compile for profiling (GCC only)." OFF)
option(SRB2_CONFIG_TRACY "Compile with Tracy profiling enabled" OFF)

39
src/CMakeLists.txt
View file

@ -166,22 +166,24 @@ if(SRB2_CONFIG_ENABLE_WEBM_MOVIES)
target_sources(SRB2SDL2 PRIVATE m_avrecorder.cpp)
endif()
# This updates the modification time for comptime.c at the
# end of building so when the build system is ran next time,
# that file gets flagged. comptime.c will always be rebuilt.
#
# This begs the question, why always rebuild comptime.c?
# Some things like the git commit must be checked each time
# the program is built. But the build system determines which
# files should be rebuilt before anything else. So
# comptime.c, which only needs to be rebuilt based on
# information known at build time, must be told to rebuild
# before that information can be ascertained.
add_custom_command(
TARGET SRB2SDL2
POST_BUILD
COMMAND ${CMAKE_COMMAND} -E touch_nocreate ${CMAKE_CURRENT_SOURCE_DIR}/comptime.c
)
if(NOT SRB2_CONFIG_SKIP_COMPTIME)
# This updates the modification time for comptime.c at the
# end of building so when the build system is ran next time,
# that file gets flagged. comptime.c will always be rebuilt.
#
# This begs the question, why always rebuild comptime.c?
# Some things like the git commit must be checked each time
# the program is built. But the build system determines which
# files should be rebuilt before anything else. So
# comptime.c, which only needs to be rebuilt based on
# information known at build time, must be told to rebuild
# before that information can be ascertained.
add_custom_command(
TARGET SRB2SDL2
POST_BUILD
COMMAND ${CMAKE_COMMAND} -E touch_nocreate ${CMAKE_CURRENT_SOURCE_DIR}/comptime.c
)
endif()
# config.h is generated by this command. It should be done at
# build time for accurate git information and before anything
@ -614,10 +616,7 @@ add_subdirectory(hud)
# strip debug symbols into separate file when using gcc.
# to be consistent with Makefile, don't generate for OS X.
if((CMAKE_COMPILER_IS_GNUCC) AND NOT ("${CMAKE_SYSTEM_NAME}" MATCHES Darwin))
if((${CMAKE_BUILD_TYPE} MATCHES Debug) OR (${CMAKE_BUILD_TYPE} MATCHES RelWithDebInfo))
if(${CMAKE_BUILD_TYPE} MATCHES Debug)
set(OBJCOPY_ONLY_KEEP_DEBUG "--only-keep-debug")
endif()
if(${CMAKE_BUILD_TYPE} MATCHES RelWithDebInfo)
message(STATUS "Will make separate debug symbols in *.debug")
add_custom_command(TARGET SRB2SDL2 POST_BUILD
COMMAND ${OBJCOPY} ${OBJCOPY_ONLY_KEEP_DEBUG} $<TARGET_FILE:SRB2SDL2> $<TARGET_FILE:SRB2SDL2>.debug