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Factor out strict_abi cmake code into a separate module.

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iphydf 2017-06-04 12:20:35 +00:00
parent b782ef5d8e
commit 41850deb43
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GPG Key ID: 3855DBA2D74403C9
2 changed files with 39 additions and 39 deletions
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40
CMakeLists.txt
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@ -43,6 +43,7 @@ include(CheckCCompilerFlag)
include(CheckCXXCompilerFlag) include(CheckCXXCompilerFlag)
include(CTest) include(CTest)
include(MacRpath) include(MacRpath)
include(StrictAbi)
set(CMAKE_MACOSX_RPATH ON) set(CMAKE_MACOSX_RPATH ON)
@ -575,45 +576,6 @@ if(BUILD_TOXAV)
DESTINATION "include/tox") DESTINATION "include/tox")
endif() endif()
################################################################################
#
# :: Strict ABI
#
# Enabling the STRICT_ABI flag will generate and use an LD version script.
# It ensures that the dynamic libraries (libtoxcore.so, libtoxav.so) only
# export the symbols that are defined in their public API (tox.h and toxav.h,
# respectively).
#
################################################################################
function(make_version_script header ns lib)
execute_process(
COMMAND ${SHELL} -c "egrep '^\\w' ${header} | grep '${ns}_[a-z0-9_]*(' | grep -v '^typedef' | grep -o '${ns}_[a-z0-9_]*(' | egrep -o '\\w+' | sort -u"
OUTPUT_VARIABLE ${lib}_SYMS
OUTPUT_STRIP_TRAILING_WHITESPACE)
string(REPLACE "\n" ";" ${lib}_SYMS ${${lib}_SYMS})
set(${lib}_VERSION_SCRIPT "${CMAKE_BINARY_DIR}/${lib}.ld")
file(WRITE ${${lib}_VERSION_SCRIPT}
"{ global:\n")
foreach(sym ${${lib}_SYMS})
file(APPEND ${${lib}_VERSION_SCRIPT}
"${sym};\n")
endforeach(sym)
file(APPEND ${${lib}_VERSION_SCRIPT}
"local: *; };\n")
set_target_properties(${lib}_shared PROPERTIES
LINK_FLAGS -Wl,--version-script,${${lib}_VERSION_SCRIPT})
endfunction()
option(STRICT_ABI "Enforce strict ABI export in dynamic libraries" OFF)
if(WIN32 OR APPLE)
# Windows and OSX don't have this linker functionality.
set(STRICT_ABI OFF)
endif()
if(STRICT_ABI AND SHELL AND ENABLE_SHARED) if(STRICT_ABI AND SHELL AND ENABLE_SHARED)
if(BUILD_TOXAV) if(BUILD_TOXAV)
make_version_script(${toxcore_SOURCE_DIR}/toxav/toxav.h toxav toxav) make_version_script(${toxcore_SOURCE_DIR}/toxav/toxav.h toxav toxav)

38
cmake/StrictAbi.cmake Normal file
View File

@ -0,0 +1,38 @@
################################################################################
#
# :: Strict ABI
#
# Enabling the STRICT_ABI flag will generate and use an LD version script.
# It ensures that the dynamic libraries (libtoxcore.so, libtoxav.so) only
# export the symbols that are defined in their public API (tox.h and toxav.h,
# respectively).
#
################################################################################
function(make_version_script header ns lib)
execute_process(
COMMAND ${SHELL} -c "egrep '^\\w' ${header} | grep '${ns}_[a-z0-9_]*(' | grep -v '^typedef' | grep -o '${ns}_[a-z0-9_]*(' | egrep -o '\\w+' | sort -u"
OUTPUT_VARIABLE ${lib}_SYMS
OUTPUT_STRIP_TRAILING_WHITESPACE)
string(REPLACE "\n" ";" ${lib}_SYMS ${${lib}_SYMS})
set(${lib}_VERSION_SCRIPT "${CMAKE_BINARY_DIR}/${lib}.ld")
file(WRITE ${${lib}_VERSION_SCRIPT}
"{ global:\n")
foreach(sym ${${lib}_SYMS})
file(APPEND ${${lib}_VERSION_SCRIPT}
"${sym};\n")
endforeach(sym)
file(APPEND ${${lib}_VERSION_SCRIPT}
"local: *; };\n")
set_target_properties(${lib}_shared PROPERTIES
LINK_FLAGS -Wl,--version-script,${${lib}_VERSION_SCRIPT})
endfunction()
option(STRICT_ABI "Enforce strict ABI export in dynamic libraries" OFF)
if(WIN32 OR APPLE)
# Windows and OSX don't have this linker functionality.
set(STRICT_ABI OFF)
endif()