Gradle cpp插件未链接共享库 [英] Gradle cpp plugin doesn't link shared library
问题描述
我有一个C ++库,可以使用RF24收听广播.我使用带有Java类的JNI来包装此库.
I have a C++ library to listen to radio with RF24. I wrap this library using JNI with a Java class.
我遇到的问题是gradle不要将共享库 librf24.so 链接到我的库 libtransmitter.so 中.
The issue that I have is that gradle don't link the shared library librf24.so into my library libtransmitter.so.
当我在 libtransmitter.so 上呼叫 ldd 时,我有:
When I call ldd on libtransmitter.so I have :
linux-vdso.so.1 (0x7ee24000)
/usr/lib/arm-linux-gnueabihf/libarmmem.so (0x76ecc000)
libstdc++.so.6 => /usr/lib/arm-linux-gnueabihf/libstdc++.so.6 (0x76d73000)
libm.so.6 => /lib/arm-linux-gnueabihf/libm.so.6 (0x76cf4000)
libgcc_s.so.1 => /lib/arm-linux-gnueabihf/libgcc_s.so.1 (0x76cc7000)
libc.so.6 => /lib/arm-linux-gnueabihf/libc.so.6 (0x76b88000)
/lib/ld-linux-armhf.so.3 (0x76ef5000)
librf24.so不存在
librf24.so is not present
这是我的gradle配置:
Here is my gradle configuration :
model {
platforms {
raspberry {
architecture "arm"
operatingSystem "linux"
}
}
toolChains {
raspToolChain(Gcc) {
target("raspberry") {
// path 'C:\\SysGCC\\raspberry\\bin'
// cCompiler.executable 'arm-linux-gnueabihf-g++.exe'
// cppCompiler.executable 'arm-linux-gnueabihf-g++.exe'
// assembler.executable 'arm-linux-gnueabihf-g++.exe'
// linker.executable 'arm-linux-gnueabihf-g++.exe'
// staticLibArchiver.executable 'arm-linux-gnueabihf-ar.exe'
}
}
}
repositories {
libs(PrebuiltLibraries) {
jniLib {
headers.srcDir projectDir.absolutePath + "\\jni\\include"
headers.srcDir projectDir.absolutePath + "\\jni\\include\\linux"
}
rf24 {
headers.srcDir projectDir.absolutePath + "\\rf24\\RF24"
headers.srcDir projectDir.absolutePath + "\\rf24\\RF24\\utility"
headers.srcDir projectDir.absolutePath + "\\rf24\\RF24\\utility\\RPi"
binaries.withType(SharedLibraryBinary) {
sharedLibraryFile = file( projectDir.absolutePath + "\\rf24\\librf24.so")
sharedLibraryLinkFile = file( projectDir.absolutePath + "\\rf24\\librf24.so")
}
}
}
}
components {
transmitter(NativeLibrarySpec) {
targetPlatform "raspberry"
sources {
cpp.lib library: 'jniLib', linkage: 'api'
cpp.lib library: 'rf24', linkage: 'api'
}
}
}
}
推荐答案
请改用以下内容:
cpp.lib library: 'rf24', linkage: 'shared'
这会导致从libtransmission
到librf24
的传递依赖.
This induces a transitive dependency from libtransmission
to librf24
.
但是,并排放置文件还不够.您应该在运行时设置LD_LIBRARY_PATH
,或者使用相对的RPATH
编译libtransmission
.
It is not enough to put the files side by side to be found, however. You should either set LD_LIBRARY_PATH
at runtime or compile libtransmission
with a relative RPATH
.
这篇关于Gradle cpp插件未链接共享库的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持IT屋!