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2025-06-29 18:41:45 +12:00
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README.md
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@ -49,20 +49,35 @@ Two HTTP client approaches are available:
```
To use CPR in your CMakeLists.txt with proper static linking:
**Simple approach (recommended for new base images):**
```cmake
find_package(nlohmann_json REQUIRED)
find_package(CPRStatic REQUIRED)
target_link_libraries(${PROJECT_NAME} PRIVATE
nlohmann_json::nlohmann_json
cpr::cpr_static)
```
**Backwards-compatible approach (works with all base image versions):**
```cmake
find_package(nlohmann_json REQUIRED)
# Find OpenSSL libraries (path varies by architecture)
find_library(OPENSSL_SSL_LIB NAMES ssl PATHS /usr/local/lib64 /usr/local/lib NO_DEFAULT_PATH)
find_library(OPENSSL_CRYPTO_LIB NAMES crypto PATHS /usr/local/lib64 /usr/local/lib NO_DEFAULT_PATH)
# CPR static linking setup
add_library(cpr::cpr_static STATIC IMPORTED)
set_target_properties(cpr::cpr_static PROPERTIES
IMPORTED_LOCATION "/usr/local/lib/libcpr.a"
INTERFACE_INCLUDE_DIRECTORIES "/usr/local/include"
INTERFACE_LINK_LIBRARIES "/usr/local/lib/libcurl.a;${OPENSSL_SSL_LIB};${OPENSSL_CRYPTO_LIB};/usr/lib/libz.a;/usr/lib/libzstd.a;lzma;dl"
)
# Try the new CPRStatic module first, fall back to manual setup
find_package(CPRStatic QUIET)
if(NOT CPRStatic_FOUND)
# Fallback for older base images
find_library(OPENSSL_SSL_LIB NAMES ssl PATHS /usr/local/lib64 /usr/local/lib NO_DEFAULT_PATH)
find_library(OPENSSL_CRYPTO_LIB NAMES crypto PATHS /usr/local/lib64 /usr/local/lib NO_DEFAULT_PATH)
add_library(cpr::cpr_static STATIC IMPORTED)
set_target_properties(cpr::cpr_static PROPERTIES
IMPORTED_LOCATION "/usr/local/lib/libcpr.a"
INTERFACE_INCLUDE_DIRECTORIES "/usr/local/include"
INTERFACE_LINK_LIBRARIES "/usr/local/lib/libcurl.a;${OPENSSL_SSL_LIB};${OPENSSL_CRYPTO_LIB};/usr/lib/libz.a;/usr/lib/libzstd.a;lzma;dl"
)
endif()
target_link_libraries(${PROJECT_NAME} PRIVATE
nlohmann_json::nlohmann_json