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authorEdward Thomson <ethomson@edwardthomson.com>2021-11-06 16:23:03 -0400
committerEdward Thomson <ethomson@edwardthomson.com>2021-11-10 21:04:57 -0500
commit18bb5d32c45a187b734c71122870907118ce6693 (patch)
tree17427e59d08cd1854e37d3ca07554eaea1a05377
parent8dec25e749c6404144915e485b3ad9a48263f978 (diff)
downloadlibgit2-18bb5d32c45a187b734c71122870907118ce6693.tar.gz
cmake: move cflag defaults into a separate module
-rw-r--r--CMakeLists.txt189
-rw-r--r--cmake/DefaultCFlags.cmake153
2 files changed, 171 insertions, 171 deletions
diff --git a/CMakeLists.txt b/CMakeLists.txt
index 040881f83..f7f19468c 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -8,23 +8,6 @@ project(libgit2 VERSION "1.3.0" LANGUAGES C)
# Add find modules to the path
set(CMAKE_MODULE_PATH ${CMAKE_MODULE_PATH} "${libgit2_SOURCE_DIR}/cmake")
-# Modules
-
-include(CheckLibraryExists)
-include(CheckFunctionExists)
-include(CheckSymbolExists)
-include(CheckStructHasMember)
-include(CheckPrototypeDefinition)
-include(AddCFlagIfSupported)
-include(FindPkgLibraries)
-include(FindThreads)
-include(FindStatNsec)
-include(Findfutimens)
-include(GNUInstallDirs)
-include(IdeSplitSources)
-include(FeatureSummary)
-include(EnableWarnings)
-
#
# Build options
#
@@ -98,6 +81,24 @@ if(WIN32)
endif()
+# Modules
+
+include(CheckLibraryExists)
+include(CheckFunctionExists)
+include(CheckSymbolExists)
+include(CheckStructHasMember)
+include(CheckPrototypeDefinition)
+include(AddCFlagIfSupported)
+include(FindPkgLibraries)
+include(FindThreads)
+include(FindStatNsec)
+include(Findfutimens)
+include(GNUInstallDirs)
+include(IdeSplitSources)
+include(FeatureSummary)
+include(EnableWarnings)
+include(DefaultCFlags)
+
#
# Compiler / linker flags
#
@@ -106,160 +107,6 @@ if(DEPRECATE_HARD)
add_definitions(-DGIT_DEPRECATE_HARD)
endif()
-# Platform specific compilation flags
-if(MSVC)
- add_definitions(-D_SCL_SECURE_NO_WARNINGS)
- add_definitions(-D_CRT_SECURE_NO_DEPRECATE)
- add_definitions(-D_CRT_NONSTDC_NO_DEPRECATE)
-
- string(REPLACE "/Zm1000" " " CMAKE_C_FLAGS "${CMAKE_C_FLAGS}")
-
- # /GF - String pooling
- # /MP - Parallel build
- set(CMAKE_C_FLAGS "/GF /MP /nologo ${CMAKE_C_FLAGS}")
-
- # /Gd - explicitly set cdecl calling convention
- set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} /Gd")
-
- if(NOT (MSVC_VERSION LESS 1900))
- # /guard:cf - Enable Control Flow Guard
- set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} /guard:cf")
- endif()
-
- if(STATIC_CRT)
- set(CRT_FLAG_DEBUG "/MTd")
- set(CRT_FLAG_RELEASE "/MT")
- else()
- set(CRT_FLAG_DEBUG "/MDd")
- set(CRT_FLAG_RELEASE "/MD")
- endif()
-
- if(WIN32_LEAKCHECK)
- set(GIT_WIN32_LEAKCHECK 1)
- set(CRT_FLAG_DEBUG "${CRT_FLAG_DEBUG}")
- set(CMAKE_C_STANDARD_LIBRARIES "${CMAKE_C_STANDARD_LIBRARIES} Dbghelp.lib")
- endif()
-
- # /Zi - Create debugging information
- # /Od - Disable optimization
- # /D_DEBUG - #define _DEBUG
- # /MTd - Statically link the multithreaded debug version of the CRT
- # /MDd - Dynamically link the multithreaded debug version of the CRT
- # /RTC1 - Run time checks
- set(CMAKE_C_FLAGS_DEBUG "${CMAKE_C_FLAGS_DEBUG} /Zi /Od /D_DEBUG /RTC1 ${CRT_FLAG_DEBUG}")
-
- # /DNDEBUG - Disables asserts
- # /MT - Statically link the multithreaded release version of the CRT
- # /MD - Dynamically link the multithreaded release version of the CRT
- # /O2 - Optimize for speed
- # /Oy - Enable frame pointer omission (FPO) (otherwise CMake will automatically turn it off)
- # /GL - Link time code generation (whole program optimization)
- # /Gy - Function-level linking
- set(CMAKE_C_FLAGS_RELEASE "/DNDEBUG /O2 /Oy /GL /Gy ${CRT_FLAG_RELEASE}")
-
- # /Oy- - Disable frame pointer omission (FPO)
- set(CMAKE_C_FLAGS_RELWITHDEBINFO "/DNDEBUG /Zi /O2 /Oy- /GL /Gy ${CRT_FLAG_RELEASE}")
-
- # /O1 - Optimize for size
- set(CMAKE_C_FLAGS_MINSIZEREL "/DNDEBUG /O1 /Oy /GL /Gy ${CRT_FLAG_RELEASE}")
-
- # /IGNORE:4221 - Ignore empty compilation units
- set(CMAKE_STATIC_LINKER_FLAGS "/IGNORE:4221")
-
- # /DYNAMICBASE - Address space load randomization (ASLR)
- # /NXCOMPAT - Data execution prevention (DEP)
- # /LARGEADDRESSAWARE - >2GB user address space on x86
- # /VERSION - Embed version information in PE header
- set(CMAKE_EXE_LINKER_FLAGS "/DYNAMICBASE /NXCOMPAT /LARGEADDRESSAWARE /VERSION:${libgit2_VERSION_MAJOR}.${libgit2_VERSION_MINOR}")
-
- if(NOT (MSVC_VERSION LESS 1900))
- # /GUARD:CF - Enable Control Flow Guard
- set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} /GUARD:CF")
- endif()
-
- # /DEBUG - Create a PDB
- # /LTCG - Link time code generation (whole program optimization)
- # /OPT:REF /OPT:ICF - Fold out duplicate code at link step
- # /INCREMENTAL:NO - Required to use /LTCG
- # /DEBUGTYPE:cv,fixup - Additional data embedded in the PDB (requires /INCREMENTAL:NO, so not on for Debug)
- set(CMAKE_EXE_LINKER_FLAGS_DEBUG "/DEBUG")
- set(CMAKE_EXE_LINKER_FLAGS_RELEASE "/RELEASE /LTCG /OPT:REF /OPT:ICF /INCREMENTAL:NO")
- set(CMAKE_EXE_LINKER_FLAGS_RELWITHDEBINFO "/DEBUG /RELEASE /LTCG /OPT:REF /OPT:ICF /INCREMENTAL:NO /DEBUGTYPE:cv,fixup")
- set(CMAKE_EXE_LINKER_FLAGS_MINSIZEREL "/RELEASE /LTCG /OPT:REF /OPT:ICF /INCREMENTAL:NO")
-
- # Same linker settings for DLL as EXE
- set(CMAKE_SHARED_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS}")
- set(CMAKE_SHARED_LINKER_FLAGS_DEBUG "${CMAKE_EXE_LINKER_FLAGS_DEBUG}")
- set(CMAKE_SHARED_LINKER_FLAGS_RELEASE "${CMAKE_EXE_LINKER_FLAGS_RELEASE}")
- set(CMAKE_SHARED_LINKER_FLAGS_RELWITHDEBINFO "${CMAKE_EXE_LINKER_FLAGS_RELWITHDEBINFO}")
- set(CMAKE_SHARED_LINKER_FLAGS_MINSIZEREL "${CMAKE_EXE_LINKER_FLAGS_MINSIZEREL}")
-else()
- if(ENABLE_REPRODUCIBLE_BUILDS)
- set(CMAKE_C_ARCHIVE_CREATE "<CMAKE_AR> Dqc <TARGET> <LINK_FLAGS> <OBJECTS>")
- set(CMAKE_C_ARCHIVE_APPEND "<CMAKE_AR> Dq <TARGET> <LINK_FLAGS> <OBJECTS>")
- set(CMAKE_C_ARCHIVE_FINISH "<CMAKE_RANLIB> -D <TARGET>")
- endif()
-
- if(NOT BUILD_SHARED_LIBS)
- set(CMAKE_FIND_LIBRARY_SUFFIXES ".a")
- endif()
-
- set(CMAKE_C_FLAGS "-D_GNU_SOURCE ${CMAKE_C_FLAGS}")
-
- enable_warnings(all)
- enable_warnings(extra)
-
- if(CMAKE_SYSTEM_NAME MATCHES "(Solaris|SunOS)")
- set(CMAKE_C_FLAGS "-D_POSIX_C_SOURCE=200112L -D__EXTENSIONS__ -D_POSIX_PTHREAD_SEMANTICS ${CMAKE_C_FLAGS}")
- endif()
-
- set(CMAKE_C_FLAGS_DEBUG "${CMAKE_C_FLAGS_DEBUG} -D_DEBUG -O0")
-
- if(MINGW OR MSYS) # MinGW and MSYS always do PIC and complain if we tell them to
- string(REGEX REPLACE "-fPIC" "" CMAKE_SHARED_LIBRARY_C_FLAGS "${CMAKE_SHARED_LIBRARY_C_FLAGS}")
- elseif(BUILD_SHARED_LIBS)
- add_c_flag_IF_SUPPORTED(-fvisibility=hidden)
-
- set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -fPIC")
- endif()
-
- if(MINGW)
- # MinGW >= 3.14 uses the C99-style stdio functions
- # automatically, but forks like mingw-w64 still want
- # us to define this in order to use them
- add_definitions(-D__USE_MINGW_ANSI_STDIO=1)
- endif()
-
- enable_warnings(documentation)
- disable_warnings(documentation-deprecated-sync)
- disable_warnings(missing-field-initializers)
- enable_warnings(strict-aliasing)
- enable_warnings(strict-prototypes)
- enable_warnings(declaration-after-statement)
- enable_warnings(shift-count-overflow)
- enable_warnings(unused-const-variable)
- enable_warnings(unused-function)
- enable_warnings(int-conversion)
- enable_warnings(c11-extensions)
- enable_warnings(c99-c11-compat)
-
- # MinGW uses gcc, which expects POSIX formatting for printf, but
- # uses the Windows C library, which uses its own format specifiers.
- # Disable format specifier warnings.
- if(MINGW)
- disable_warnings(format)
- disable_warnings(format-security)
- else()
- enable_warnings(format)
- enable_warnings(format-security)
- endif()
-endif()
-
-# Ensure that MinGW provides the correct header files.
-if(WIN32 AND NOT CYGWIN)
- add_definitions(-DWIN32 -D_WIN32_WINNT=0x0600)
-endif()
-
if(NOT CMAKE_CONFIGURATION_TYPES)
# Build Debug by default
if(NOT CMAKE_BUILD_TYPE)
diff --git a/cmake/DefaultCFlags.cmake b/cmake/DefaultCFlags.cmake
new file mode 100644
index 000000000..d122f6c25
--- /dev/null
+++ b/cmake/DefaultCFlags.cmake
@@ -0,0 +1,153 @@
+# Platform specific compilation flags
+if(MSVC)
+ add_definitions(-D_SCL_SECURE_NO_WARNINGS)
+ add_definitions(-D_CRT_SECURE_NO_DEPRECATE)
+ add_definitions(-D_CRT_NONSTDC_NO_DEPRECATE)
+
+ string(REPLACE "/Zm1000" " " CMAKE_C_FLAGS "${CMAKE_C_FLAGS}")
+
+ # /GF - String pooling
+ # /MP - Parallel build
+ set(CMAKE_C_FLAGS "/GF /MP /nologo ${CMAKE_C_FLAGS}")
+
+ # /Gd - explicitly set cdecl calling convention
+ set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} /Gd")
+
+ if(NOT (MSVC_VERSION LESS 1900))
+ # /guard:cf - Enable Control Flow Guard
+ set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} /guard:cf")
+ endif()
+
+ if(STATIC_CRT)
+ set(CRT_FLAG_DEBUG "/MTd")
+ set(CRT_FLAG_RELEASE "/MT")
+ else()
+ set(CRT_FLAG_DEBUG "/MDd")
+ set(CRT_FLAG_RELEASE "/MD")
+ endif()
+
+ if(WIN32_LEAKCHECK)
+ set(GIT_WIN32_LEAKCHECK 1)
+ set(CRT_FLAG_DEBUG "${CRT_FLAG_DEBUG}")
+ set(CMAKE_C_STANDARD_LIBRARIES "${CMAKE_C_STANDARD_LIBRARIES} Dbghelp.lib")
+ endif()
+
+ # /Zi - Create debugging information
+ # /Od - Disable optimization
+ # /D_DEBUG - #define _DEBUG
+ # /MTd - Statically link the multithreaded debug version of the CRT
+ # /MDd - Dynamically link the multithreaded debug version of the CRT
+ # /RTC1 - Run time checks
+ set(CMAKE_C_FLAGS_DEBUG "${CMAKE_C_FLAGS_DEBUG} /Zi /Od /D_DEBUG /RTC1 ${CRT_FLAG_DEBUG}")
+
+ # /DNDEBUG - Disables asserts
+ # /MT - Statically link the multithreaded release version of the CRT
+ # /MD - Dynamically link the multithreaded release version of the CRT
+ # /O2 - Optimize for speed
+ # /Oy - Enable frame pointer omission (FPO) (otherwise CMake will automatically turn it off)
+ # /GL - Link time code generation (whole program optimization)
+ # /Gy - Function-level linking
+ set(CMAKE_C_FLAGS_RELEASE "/DNDEBUG /O2 /Oy /GL /Gy ${CRT_FLAG_RELEASE}")
+
+ # /Oy- - Disable frame pointer omission (FPO)
+ set(CMAKE_C_FLAGS_RELWITHDEBINFO "/DNDEBUG /Zi /O2 /Oy- /GL /Gy ${CRT_FLAG_RELEASE}")
+
+ # /O1 - Optimize for size
+ set(CMAKE_C_FLAGS_MINSIZEREL "/DNDEBUG /O1 /Oy /GL /Gy ${CRT_FLAG_RELEASE}")
+
+ # /IGNORE:4221 - Ignore empty compilation units
+ set(CMAKE_STATIC_LINKER_FLAGS "/IGNORE:4221")
+
+ # /DYNAMICBASE - Address space load randomization (ASLR)
+ # /NXCOMPAT - Data execution prevention (DEP)
+ # /LARGEADDRESSAWARE - >2GB user address space on x86
+ # /VERSION - Embed version information in PE header
+ set(CMAKE_EXE_LINKER_FLAGS "/DYNAMICBASE /NXCOMPAT /LARGEADDRESSAWARE /VERSION:${libgit2_VERSION_MAJOR}.${libgit2_VERSION_MINOR}")
+
+ if(NOT (MSVC_VERSION LESS 1900))
+ # /GUARD:CF - Enable Control Flow Guard
+ set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} /GUARD:CF")
+ endif()
+
+ # /DEBUG - Create a PDB
+ # /LTCG - Link time code generation (whole program optimization)
+ # /OPT:REF /OPT:ICF - Fold out duplicate code at link step
+ # /INCREMENTAL:NO - Required to use /LTCG
+ # /DEBUGTYPE:cv,fixup - Additional data embedded in the PDB (requires /INCREMENTAL:NO, so not on for Debug)
+ set(CMAKE_EXE_LINKER_FLAGS_DEBUG "/DEBUG")
+ set(CMAKE_EXE_LINKER_FLAGS_RELEASE "/RELEASE /LTCG /OPT:REF /OPT:ICF /INCREMENTAL:NO")
+ set(CMAKE_EXE_LINKER_FLAGS_RELWITHDEBINFO "/DEBUG /RELEASE /LTCG /OPT:REF /OPT:ICF /INCREMENTAL:NO /DEBUGTYPE:cv,fixup")
+ set(CMAKE_EXE_LINKER_FLAGS_MINSIZEREL "/RELEASE /LTCG /OPT:REF /OPT:ICF /INCREMENTAL:NO")
+
+ # Same linker settings for DLL as EXE
+ set(CMAKE_SHARED_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS}")
+ set(CMAKE_SHARED_LINKER_FLAGS_DEBUG "${CMAKE_EXE_LINKER_FLAGS_DEBUG}")
+ set(CMAKE_SHARED_LINKER_FLAGS_RELEASE "${CMAKE_EXE_LINKER_FLAGS_RELEASE}")
+ set(CMAKE_SHARED_LINKER_FLAGS_RELWITHDEBINFO "${CMAKE_EXE_LINKER_FLAGS_RELWITHDEBINFO}")
+ set(CMAKE_SHARED_LINKER_FLAGS_MINSIZEREL "${CMAKE_EXE_LINKER_FLAGS_MINSIZEREL}")
+else()
+ if(ENABLE_REPRODUCIBLE_BUILDS)
+ set(CMAKE_C_ARCHIVE_CREATE "<CMAKE_AR> Dqc <TARGET> <LINK_FLAGS> <OBJECTS>")
+ set(CMAKE_C_ARCHIVE_APPEND "<CMAKE_AR> Dq <TARGET> <LINK_FLAGS> <OBJECTS>")
+ set(CMAKE_C_ARCHIVE_FINISH "<CMAKE_RANLIB> -D <TARGET>")
+ endif()
+
+ if(NOT BUILD_SHARED_LIBS)
+ set(CMAKE_FIND_LIBRARY_SUFFIXES ".a")
+ endif()
+
+ set(CMAKE_C_FLAGS "-D_GNU_SOURCE ${CMAKE_C_FLAGS}")
+
+ enable_warnings(all)
+ enable_warnings(extra)
+
+ if(CMAKE_SYSTEM_NAME MATCHES "(Solaris|SunOS)")
+ set(CMAKE_C_FLAGS "-D_POSIX_C_SOURCE=200112L -D__EXTENSIONS__ -D_POSIX_PTHREAD_SEMANTICS ${CMAKE_C_FLAGS}")
+ endif()
+
+ set(CMAKE_C_FLAGS_DEBUG "${CMAKE_C_FLAGS_DEBUG} -D_DEBUG -O0")
+
+ if(MINGW OR MSYS) # MinGW and MSYS always do PIC and complain if we tell them to
+ string(REGEX REPLACE "-fPIC" "" CMAKE_SHARED_LIBRARY_C_FLAGS "${CMAKE_SHARED_LIBRARY_C_FLAGS}")
+ elseif(BUILD_SHARED_LIBS)
+ add_c_flag_IF_SUPPORTED(-fvisibility=hidden)
+
+ set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -fPIC")
+ endif()
+
+ if(MINGW)
+ # MinGW >= 3.14 uses the C99-style stdio functions
+ # automatically, but forks like mingw-w64 still want
+ # us to define this in order to use them
+ add_definitions(-D__USE_MINGW_ANSI_STDIO=1)
+ endif()
+
+ enable_warnings(documentation)
+ disable_warnings(documentation-deprecated-sync)
+ disable_warnings(missing-field-initializers)
+ enable_warnings(strict-aliasing)
+ enable_warnings(strict-prototypes)
+ enable_warnings(declaration-after-statement)
+ enable_warnings(shift-count-overflow)
+ enable_warnings(unused-const-variable)
+ enable_warnings(unused-function)
+ enable_warnings(int-conversion)
+ enable_warnings(c11-extensions)
+ enable_warnings(c99-c11-compat)
+
+ # MinGW uses gcc, which expects POSIX formatting for printf, but
+ # uses the Windows C library, which uses its own format specifiers.
+ # Disable format specifier warnings.
+ if(MINGW)
+ disable_warnings(format)
+ disable_warnings(format-security)
+ else()
+ enable_warnings(format)
+ enable_warnings(format-security)
+ endif()
+endif()
+
+# Ensure that MinGW provides the correct header files.
+if(WIN32 AND NOT CYGWIN)
+ add_definitions(-DWIN32 -D_WIN32_WINNT=0x0600)
+endif()