mirror of
https://github.com/neovim/neovim.git
synced 2025-02-25 18:55:25 -06:00
ac5a6d9ff5
Problem:
RelWithDebInfo generates redundant flags:
Compilation: /usr/bin/cc -O2 -g -Og -g
The `CMAKE_C_FLAGS_RELWITHDEBINFO` variable is being modified in a way
that caused duplicate `-Og` and `-g` flags to be added. The resulting
flags were `-O2 -g -Og -g`.
- `-Og` (Optimize for debugging) and `-O2` (Optimize for performance)
are different optimization levels. We can't use both at once.
- The duplicate `-g` flag is redundant and no effect.
multiple -O flags has no effect for code, just redundant.
> If you use multiple -O options, with or without level numbers, the last such option is the one that is effective.
https://gcc.gnu.org/onlinedocs/gcc/Optimize-Options.html
Solution:
Adjust the flags to use the more appropriate `-O2 -g`.
Compilation: /usr/bin/cc -O2 -g
BEFORE:
```
:verbose version
NVIM v0.11.0-dev-1443+ge00cd1ab40
Build type: RelWithDebInfo
LuaJIT 2.1.1734355927
Compilation: /usr/bin/cc -O2 -g -Og -g -flto -fno-fat-lto-ob
jects -Wall -Wextra -pedantic -Wno-unused-parameter -Wstrict
...
```
AFTER:
```
:verbose version
NVIM v0.11.0-dev-e00cd1ab4-dirty
Build type: RelWithDebInfo
LuaJIT 2.1.1734355927
Compilation: /usr/bin/cc -O2 -g -flto -fno-fat-lto-objects -
Wall -Wextra -pedantic -Wno-unused-parameter -Wstrict-protot
...
```
60 lines
2.3 KiB
Plaintext
60 lines
2.3 KiB
Plaintext
# Copy this to 'local.mk' in the repository root.
|
|
# Individual entries must be uncommented to take effect.
|
|
|
|
# By default, the installation prefix is '/usr/local'.
|
|
# CMAKE_EXTRA_FLAGS += -DCMAKE_INSTALL_PREFIX=/usr/local/nvim-latest
|
|
|
|
# These CFLAGS can be used in addition to those specified in CMakeLists.txt:
|
|
# CMAKE_EXTRA_FLAGS="-DCMAKE_C_FLAGS=-ftrapv -Wlogical-op"
|
|
|
|
# To turn compiler warnings into errors:
|
|
# CMAKE_EXTRA_FLAGS += "-DCMAKE_C_FLAGS=${CMAKE_C_FLAGS} -Werror"
|
|
|
|
# Sets the build type; defaults to Debug. Valid values:
|
|
#
|
|
# - Debug: Disables optimizations (-O0), enables debug information.
|
|
#
|
|
# - RelWithDebInfo: Enables optimizations (-O2) with debug information.
|
|
#
|
|
# - MinSizeRel: Enables all -O2 optimization that do not typically
|
|
# increase code size, and performs further optimizations
|
|
# designed to reduce code size (-Os).
|
|
# Disables debug information.
|
|
#
|
|
# - Release: Same as RelWithDebInfo, but disables debug information.
|
|
#
|
|
# CMAKE_BUILD_TYPE := Debug
|
|
|
|
# With non-Debug builds interprocedural optimization (IPO) (which includes
|
|
# link-time optimization (LTO)) is enabled by default, which causes the link
|
|
# step to take a significant amount of time, which is relevant when building
|
|
# often. You can disable it explicitly:
|
|
# CMAKE_EXTRA_FLAGS += -DENABLE_LTO=OFF
|
|
|
|
# Log levels: DEBUG, INFO, WARNING, ERROR
|
|
# For Debug builds all log levels are used
|
|
# For Release and RelWithDebInfo builds only WARNING and ERROR are used, unless:
|
|
# CMAKE_EXTRA_FLAGS += -DLOG_DEBUG
|
|
|
|
# By default, nvim uses bundled versions of its required third-party
|
|
# dependencies.
|
|
# Uncomment these entries to instead use system-wide installations of
|
|
# them.
|
|
#
|
|
# DEPS_CMAKE_FLAGS += -DUSE_BUNDLED_BUSTED=OFF
|
|
# DEPS_CMAKE_FLAGS += -DUSE_BUNDLED_GETTEXT=OFF
|
|
# DEPS_CMAKE_FLAGS += -DUSE_BUNDLED_LIBICONV=OFF
|
|
# DEPS_CMAKE_FLAGS += -DUSE_BUNDLED_LIBUV=OFF
|
|
# DEPS_CMAKE_FLAGS += -DUSE_BUNDLED_LUAJIT=OFF
|
|
# DEPS_CMAKE_FLAGS += -DUSE_BUNDLED_LUV=OFF
|
|
# DEPS_CMAKE_FLAGS += -DUSE_BUNDLED_TS=OFF
|
|
# DEPS_CMAKE_FLAGS += -DUSE_BUNDLED_TS_PARSERS=OFF
|
|
# DEPS_CMAKE_FLAGS += -DUSE_BUNDLED_UNIBILIUM=OFF
|
|
# DEPS_CMAKE_FLAGS += -DUSE_BUNDLED_UTF8PROC=OFF
|
|
#
|
|
# Or disable all bundled dependencies at once.
|
|
#
|
|
# DEPS_CMAKE_FLAGS += -DUSE_BUNDLED=OFF
|
|
|
|
# .DEFAULT_GOAL := nvim
|