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- From: Jo-Philipp Wich <jo@mein.io>
- Date: Wed, 11 Jan 2017 03:36:04 +0100
- Subject: [PATCH] cmcurl: link librt
- When cmake is linked against LibreSSL, there might be an indirect
- dependency on librt on certain systems if LibreSSL's libcrypto uses
- clock_gettime() from librt:
- [ 28%] Linking C executable LIBCURL
- .../lib/libcrypto.a(getentropy_linux.o): In function `getentropy_fallback':
- getentropy_linux.c:(.text+0x16d): undefined reference to `clock_gettime'
- getentropy_linux.c:(.text+0x412): undefined reference to `clock_gettime'
- collect2: error: ld returned 1 exit status
- make[5]: *** [Utilities/cmcurl/LIBCURL] Error 1
- Modify the cmcurl CMakeLists.txt to check for clock_gettime() in librt
- and unconditionally link the rt library when the symbol is found.
- Signed-off-by: Jo-Philipp Wich <jo@mein.io>
- ---
- --- a/Utilities/cmcurl/CMakeLists.txt
- +++ b/Utilities/cmcurl/CMakeLists.txt
- @@ -508,6 +508,14 @@ if(CMAKE_USE_OPENSSL)
- endif()
- set(SSL_ENABLED ON)
- set(USE_OPENSSL ON)
- + check_library_exists("rt" clock_gettime "" HAVE_LIBRT)
- + if(HAVE_LIBRT)
- + list(APPEND OPENSSL_LIBRARIES rt)
- + endif()
- + check_library_exists("pthread" pthread_once "" HAVE_PTHREAD)
- + if(HAVE_PTHREAD)
- + list(APPEND OPENSSL_LIBRARIES pthread)
- + endif()
- list(APPEND CURL_LIBS ${OPENSSL_LIBRARIES})
- include_directories(${OPENSSL_INCLUDE_DIR})
-
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