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0015514

CMake

public

2015-04-15 14:14

2016-06-10 14:31

Reporter

David Borel

Assigned To

Kitware Robot

Priority

high

Severity

major

Reproducibility

always

Status

closed

Resolution

moved

Platform

Android API 19

Windows 8.1

OS Version

x64

Product Version

CMake 3.2.1

Target Version

Fixed in Version

Summary

0015514: SWIG_ADD_MODULE omits all symbols from .so on NDK

Description

I'm trying to use SWIG to generate a C# wrapper for a C++ shared library. I've configured CMake to build two dynamic libs: one SHARED lib for the native layer and one SWIG module for the wrapper. Everything works fine on Windows and Mac. On Android, the first shared library exports all the correct symbols. But the SWIG module does not export anything. SWIG generates the correct _wrap.cxx file and C# files. But all exports from the cxx file are missing from the module's .so. I see all of the symbols in the _wrap.cxx.o file, so there appears to be a problem with the linker settings used by CMake. I've pasted the linker command line below.

Steps To Reproduce

Compile any SWIG C# wrapper for NDK.

Additional Information

C:\Users\dborel\Documents\Projects\ndk\toolchains\arm-linux-androideabi-4.9\prebuilt\windows-x86_64\bin\arm-linux-androideabi-gcc.exe -fPIC -fexceptions -frtti -Wno-psabi --sysroot=C:/Users/dborel/Documents/Projects/ndk/platforms/android-8/arch-arm -fpic -funwind-tables -finline-limit=64 -fsigned-char -no-canonical-prefixes -march=armv7-a -mfloat-abi=softfp -mfpu=neon -fdata-sections -ffunction-sections -Wa,--noexecstack -std=c++11 -marm -fno-omit-frame-pointer -fno-strict-aliasing -O0 -g -DDEBUG -D_DEBUG -Wl,--fix-cortex-a8 -Wl,--no-undefined -Wl,--gc-sections -Wl,-z,noexecstack -Wl,-z,relro -Wl,-z,now -shared -Wl,-soname, -o libs\armeabi-v7a\libOVRPluginNET.so CMakeFiles/OVRPluginNET.dir/Generated/OVRPluginCSHARP_wrap.cxx.o -LC:\Users\dborel\Documents\Projects\ndk\toolchains\arm-linux-androideabi-4.9\prebuilt\windows-x86_64\user\libs\armeabi-v7a -LC:\Users\dborel\Documents\Projects\ndk\platforms\android-19\arch-arm\usr\lib -LC:\Users\dborel\Documents\Projects\UnitySDK\OVRPlugin\..\3rdParty\VRLib\Lib libs\armeabi-v7a\libOVRPlugin.so -loculus -lz -ljpeg -lGLESv3 -lEGL -llog -landroid "C:/Users/dborel/Documents/Projects/ndk/sources/cxx-stl/gnu-libstdc++/4.9/libs/armeabi-v7a/libgnustl_static.a" "C:/Users/dborel/Documents/Projects/ndk/sources/cxx-stl/gnu-libstdc++/4.9/libs/armeabi-v7a/libsupc++.a" -lm

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Notes
(0042757) Kitware Robot (administrator) 2016-06-10 14:29	Resolving issue as `moved`. This issue tracker is no longer used. Further discussion of this issue may take place in the current CMake Issues page linked in the banner at the top of this page.

Issue History
Date Modified	Username	Field	Change
2015-04-15 14:14	David Borel	New Issue
2016-06-10 14:29	Kitware Robot	Note Added: 0042757
2016-06-10 14:29	Kitware Robot	Status	new => resolved
2016-06-10 14:29	Kitware Robot	Resolution	open => moved
2016-06-10 14:29	Kitware Robot	Assigned To	=> Kitware Robot
2016-06-10 14:31	Kitware Robot	Status	resolved => closed