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This commit is contained in:
Markus F.X.J. Oberhumer
2023-07-16 21:28:26 +02:00
parent 9a6b5940cf
commit 3f7f26c74b
12 changed files with 44 additions and 22 deletions
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CMakeLists.txt
+10 -9
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@@ -58,6 +58,9 @@ if(${CMAKE_VERSION} VERSION_GREATER "3.14.7")
endif()
if(NOT DEFINED CMAKE_REQUIRED_QUIET)
set(CMAKE_REQUIRED_QUIET ON)
if("$ENV{CMAKE_REQUIRED_QUIET}" MATCHES "^(0|1|OFF|ON)$")
set(CMAKE_REQUIRED_QUIET "$ENV{CMAKE_REQUIRED_QUIET}")
endif()
endif()
# determine Git revision
@@ -125,7 +128,7 @@ endif()
# set MSVC_FRONTEND
set(MSVC_FRONTEND 0)
if(MSVC OR ",${CMAKE_C_COMPILER_FRONTEND_VARIANT}," STREQUAL ",MSVC,")
if(MSVC OR CMAKE_C_COMPILER_FRONTEND_VARIANT MATCHES "^MSVC")
set(MSVC_FRONTEND 1)
endif()
@@ -165,14 +168,13 @@ function(upx_add_definitions)
endforeach()
endfunction()
if(NOT MSVC)
if(NOT CMAKE_C_COMPILER_ID MATCHES "^MSVC")
# use -O2 instead of -O3 to reduce code size
string(REGEX REPLACE "(^| )-O3( |$$)" "\\1-O2\\2" a "${CMAKE_C_FLAGS_RELEASE}")
string(REGEX REPLACE "(^| )-O3( |$$)" "\\1-O2\\2" b "${CMAKE_CXX_FLAGS_RELEASE}")
set(CMAKE_C_FLAGS_RELEASE "${a}" CACHE STRING "Flags used by the C compiler during RELEASE builds." FORCE)
set(CMAKE_CXX_FLAGS_RELEASE "${b}" CACHE STRING "Flags used by the CXX compiler during RELEASE builds." FORCE)
endif()
if(MSVC_FRONTEND)
# disable silly warnings about using "deprecated" POSIX functions like fopen()
add_definitions(-D_CRT_NONSTDC_NO_DEPRECATE)
@@ -181,19 +183,18 @@ if(MSVC_FRONTEND)
add_definitions(-D_CRT_SECURE_NO_WARNINGS)
# use -funsigned-char; set __cplusplus according to selected C++ standard
add_definitions(-J -Zc:__cplusplus)
if(CMAKE_C_COMPILER_ID MATCHES "MSVC")
if(CMAKE_C_COMPILER_ID MATCHES "^MSVC")
upx_add_definitions(-Zc:preprocessor) # use new preprocessor
elseif(CMAKE_C_COMPILER_ID MATCHES "Clang")
upx_add_definitions(-clang:-fno-strict-aliasing -clang:-fno-strict-overflow)
endif()
else()
endif()
if(NOT CMAKE_C_COMPILER_ID MATCHES "^MSVC")
# protect against security threats caused by misguided compiler "optimizations"
upx_add_definitions(-fno-delete-null-pointer-checks -fno-lifetime-dse)
upx_add_definitions(-fno-strict-aliasing -fno-strict-overflow -funsigned-char)
# disable overambitious auto-vectorization until this actually gains something
upx_add_definitions(-fno-tree-vectorize)
# disable annoying clang warnings which get added by the macOS Xcode cmake generator
if(CMAKE_C_COMPILER_ID MATCHES "Clang" AND CMAKE_GENERATOR STREQUAL "Xcode")
if(CMAKE_GENERATOR MATCHES "Xcode")
upx_add_definitions(-Wno-shorten-64-to-32)
endif()
endif()
@@ -455,7 +456,7 @@ if(EXISTS "${CMAKE_CURRENT_SOURCE_DIR}/maint/make/CMakeLists.maint.txt")
include("${CMAKE_CURRENT_SOURCE_DIR}/maint/make/CMakeLists.maint.txt")
endif()
print_var(CMAKE_VERSION UPX_CONFIG_CMAKE_MINIMUM_REQUIRED_VERSION)
print_var(CMAKE_VERSION UPX_CONFIG_CMAKE_MINIMUM_REQUIRED_VERSION CMAKE_GENERATOR)
if(NOT UPX_CONFIG_CMAKE_DISABLE_PRINT_INFO)
print_var(CMAKE_HOST_SYSTEM_NAME CMAKE_HOST_SYSTEM_VERSION)
print_var(CMAKE_SYSTEM_NAME CMAKE_SYSTEM_VERSION CMAKE_CROSSCOMPILING)