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Merge 9265eb181b into a6c57dc6f1

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This commit is contained in:
Corey Richardson 2014-10-07 17:56:47 +00:00
commit f55e7bdd77
2 changed files with 44 additions and 0 deletions
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37
CMakeLists.txt
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@ -11,6 +11,7 @@ set(GLFW_VERSION_FULL "${GLFW_VERSION}.${GLFW_VERSION_PATCH}${GLFW_VERSION_EXTRA
set(LIB_SUFFIX "" CACHE STRING "Takes an empty string or 64. Directory where lib will be installed: lib or lib64") set(LIB_SUFFIX "" CACHE STRING "Takes an empty string or 64. Directory where lib will be installed: lib or lib64")
option(BUILD_SHARED_LIBS "Build shared libraries" OFF) option(BUILD_SHARED_LIBS "Build shared libraries" OFF)
option(GLFW_FORCE_INSECURE "Don't build with -fPIC on UNIX, or ASLR/DEP support on Windows. On Windows, a single insecure DLL will disable security for the entire executable. Use this lightly." OFF)
option(GLFW_BUILD_EXAMPLES "Build the GLFW example programs" ON) option(GLFW_BUILD_EXAMPLES "Build the GLFW example programs" ON)
option(GLFW_BUILD_TESTS "Build the GLFW test programs" ON) option(GLFW_BUILD_TESTS "Build the GLFW test programs" ON)
option(GLFW_BUILD_DOCS "Build the GLFW documentation" ON) option(GLFW_BUILD_DOCS "Build the GLFW documentation" ON)
@ -22,6 +23,42 @@ if (WIN32)
option(GLFW_USE_OPTIMUS_HPG "Force use of high-performance GPU on Optimus systems" OFF) option(GLFW_USE_OPTIMUS_HPG "Force use of high-performance GPU on Optimus systems" OFF)
endif() endif()
if (UNIX AND NOT GLFW_FORCE_INSECURE)
set(CMAKE_C_FLAGS "-fPIC ${CMAKE_C_FLAGS}")
elseif(MINGW AND NOT GLFW_FORCE_INSECURE)
include(CheckCCompilerFlag)
# These default to on in MSVC, when available, but not with MinGW.
# Only needed for DLLs.
# Vista+
set(CMAKE_REQUIRED_FLAGS "-Wl,--nxcompat")
check_c_compiler_flag("" _DEP_AVAIL)
# XP SP2+
set(CMAKE_REQUIRED_FLAGS "-Wl,--dynamicbase")
check_c_compiler_flag("" _ASLR_AVAIL)
# 64-bit ASLR
set(CMAKE_REQUIRED_FLAGS "-Wl,--high-entropy-va")
check_c_compiler_flag("" _64ASLR_AVAIL)
if(_DEP_AVAIL)
set(CMAKE_SHARED_LINKER_FLAGS "-Wl,--nxcompat ${CMAKE_SHARED_LINKER_FLAGS}")
endif()
if(_ASLR_AVAIL)
set(CMAKE_SHARED_LINKER_FLAGS "-Wl,--dynamicbase ${CMAKE_SHARED_LINKER_FLAGS}")
endif()
if(_64ASLR_AVAIL)
set(CMAKE_SHARED_LINKER_FLAGS "-Wl,--high-entropy-va ${CMAKE_SHARED_LINKER_FLAGS}")
endif()
elseif(MSVC AND GLFW_FORCE_INSECURE)
# HIGHENTROPYVA will be NO if DYNAMICBASE is.
set(CMAKE_SHARED_LINKER_FLAGS "/DYNAMICBASE:NO /NXCOMPAT:NO ${CMAKE_SHARED_LINKER_FLAGS}")
endif()
if (APPLE) if (APPLE)
option(GLFW_BUILD_UNIVERSAL "Build GLFW as a Universal Binary" OFF) option(GLFW_BUILD_UNIVERSAL "Build GLFW as a Universal Binary" OFF)
option(GLFW_USE_CHDIR "Make glfwInit chdir to Contents/Resources" ON) option(GLFW_USE_CHDIR "Make glfwInit chdir to Contents/Resources" ON)

7
docs/compile.dox
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@ -190,6 +190,13 @@ library is used, or if set to `glesv2` the OpenGL ES 2.0 library is used. The
selected library and its header files must be present on the system for this to selected library and its header files must be present on the system for this to
work. work.
`GLFW_FORCE_INSECURE` will disable ASLR and, on Windows, DEP. On non-Windows
systems, this just means not compiling with `-fPIC`. On 32-bit systems,
position independant code has a performance penalty, and might be reasonably
disabled. On 64-bit systems, there is no penalty. On Windows, disabling
ASLR/DEP for any DLL linked in an executable to be unable to use ASLR/DEP,
which can cause security issues. Use this lightly.
`GLFW_BUILD_EXAMPLES` determines whether the GLFW examples are built `GLFW_BUILD_EXAMPLES` determines whether the GLFW examples are built
along with the library. along with the library.