在CMake中静态链接OpenSSL Crypto [英] Static linking of OpenSSL Crypto in CMake
问题描述
我需要为MIPS设备制作交叉编译的OpenSSL.我尝试按照文档进行操作.将 OPENSSL_USE_STATIC_LIBS
设置为true,然后将 target_link_libraries
设置为所需的库文件.
I need to make a cross-compiled OpenSSL for a MIPS device. I've tried following the documentation. Set OPENSSL_USE_STATIC_LIBS
to true and set target_link_libraries
to the library files you need.
CMakeLists.txt:
CMakeLists.txt:
compileAsC99()
if(NOT ${use_http})
message(FATAL_ERROR "program being generated without HTTP support")
endif()
set(program_c_files
...
)
set(program_h_files
...
)
include_directories(...)
add_executable(program ${program_c_files} ${program_h_files})
set(OPENSSL_USE_STATIC_LIBS TRUE)
#target_link_libraries(program OpenSSL::Crypto)
target_link_libraries(program /home/program/mips/lib/libssl.so.1.1)
target_link_libraries(program /home/program/mips/lib/libcrypto.so.1.1)
它可以正常编译而不会发出警告,但是检查生成的二进制文件告诉我它仍然是共享库.
It compiles fine without warnings, but checking the resulting binary tells me that it's still shared library.
readelf -d程序:
readelf -d program:
Dynamic section at offset 0x1bc contains 35 entries:
Tag Type Name/Value
0x00000001 (NEEDED) Shared library: [libssl.so.1.1]
0x00000001 (NEEDED) Shared library: [libcrypto.so.1.1]
0x0000000f (RPATH) Library rpath: [/home/program/mips/lib]
我不明白我在做什么错.
I don't understand what I'm doing wrong.
已经查看了在CMake中链接静态OpenSSL加密库但是它并没有告诉我任何新的东西.
Already looked at Linking statically OpenSSL crypto library in CMake but it didn't tell me anything new.
根据回复更新CMakeLists.txt文件:CMakeLists.txt:
EDIT 2: Updated the CMakeLists.txt file according to the reply: CMakeLists.txt:
compileAsC99()
if(NOT ${use_http})
message(FATAL_ERROR "program being generated without HTTP support")
endif()
set(program_c_files
...
)
set(program_h_files
...
)
include_directories(...)
add_executable(program ${program_c_files} ${program_h_files})
find_package(OpenSSL REQUIRED)
if(OPENSSL_FOUND)
set(OPENSSL_USE_STATIC_LIBS TRUE)
message("OPENSSL FOUND!")
endif()
target_link_libraries(program OpenSSL::Crypto)
输出:
-- IoT Client SDK Version = 1.2.11
-- Provisioning client OFF
-- target architecture: GENERIC
-- Cross compiling not using pkg-config
-- Found CURL: /home/program/mips/lib/libcurl.a (found version "7.63.0")
-- Found CURL: /home/program/mips/lib/libcurl.a
-- target architecture: GENERIC
-- target architecture: GENERIC
-- target architecture: GENERIC
-- target architecture: GENERIC
-- iothub architecture: GENERIC
OPENSSL FOUND!
-- Configuring done
-- Generating done
编辑繁荣:如果您(以后的人)遇到dlopen的 undefined引用
,则将以下内容添加到我的 CMakeLists.txt
文件
EDIT PROSPERITY:
If you, future people, run into the undefined reference to dlopen
, I added the following to my CMakeLists.txt
file
target_link_libraries(program ${CMAKE_DL_LIBS})
推荐答案
设置为TRUE,变量 OPENSSL_USE_STATIC_LIBS
强制 find_package(OpenSSL)
搜索静态库.因此,此变量仅适用于该调用,并且如果您使用其结果,则可以使用该变量:
Setting to TRUE, variable OPENSSL_USE_STATIC_LIBS
forces find_package(OpenSSL)
to search the static library. So this variable works only with that call, and if you use its results:
set(OPENSSL_USE_STATIC_LIBS TRUE)
find_package(OpenSSL REQUIRED)
target_link_libraries(program OpenSSL::Crypto)
如果未设置 OPENSSL_USE_STATIC_LIBS
的情况下已经执行了 cmake
,则需要删除CMake缓存(构建目录下的 CMakeCache.txt
)在进行新尝试之前.否则,将使用已找到(共享!)的库,并且不会进行任何重新搜索.
If you have already executed cmake
without setting of OPENSSL_USE_STATIC_LIBS
, then you need to remove CMake cache (CMakeCache.txt
under build directory) before new attempt. Otherwise, already found (shared!) libraries will be used and no re-search will be performed.
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