[英]Conan + CMake + C++ : Linking against Boost.Log static library fails
[英]cmake: linking against STATIC IMPORTED library fails
我有供应商提供的静态库。
我已将其添加为STATIC IMPORTED
库目标,并在目标上设置了属性:
add_library(
lime_api
STATIC
IMPORTED
)
set_target_properties(
lime_api
PROPERTIES
IMPORTED_LOCATION "${CMAKE_CURRENT_LIST_DIR}/trading/limeTradingApi.a"
)
# users include "api/trading/limeTradingApi.h"
set_target_properties(
lime_api
PROPERTIES
INTERFACE_INCLUDE_DIRECTORIES "${CMAKE_CURRENT_LIST_DIR}/.."
)
我尝试在源代码树的其他位置链接到lime_api
,但出现错误:
/usr/bin/ld: cannot find -llime_api
我的源代码树如下所示:
src
|
+--- api
| |
| +--- trading
| | - limeTradingApi.a
| | - limeTradingApi.h
| |
| +--- examples
| |
| +--- trading
|
+--- order
|
+--- example
奇怪的是,有一个供应商提供的示例可以链接到该库,并且运行良好:
api/examples/trading/CMakeLists.txt
:
add_executable (trading_demo exampleClient.cc)
target_link_libraries(trading_demo lime_api) <-- this works
但是,当我尝试链接到我自己的包含lime_api
的库时,出现链接器错误。
order/CMakeLists.txt
:
add_library(
order
STATIC
${SRCS}
)
target_link_libraries(order lime_api) <-- this doesn't work
order/example/CMakeLists.txt
:
add_executable (order_example main.cpp)
target_link_libraries(order_example order)
为什么CMake不将链接的目标lime_api
“转换”为我的可执行文件的-llimeTradingApi.a
?
我怀疑你遇到了可视性问题与IMPORTED
库目标。 根据文档 :
An IMPORTED library target references a library file located outside the
project. ... The target name has scope in the directory in which it is
created and below, but the GLOBAL option extends visibility.
这就是为什么正确的库路径用于内部trading_demo
目标,而不用于外部order_example
目标的原因。 要解决此问题,添加GLOBAL
选项就足够了:
add_library(lime_api STATIC IMPORTED GLOBAL)
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