CMake-only computation of whether librt is needed. (#374)
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@ -16,12 +16,13 @@ MESSAGE(STATUS "CMake v${CMAKE_VERSION}")
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IF (CMAKE_SYSTEM_NAME STREQUAL "Linux")
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IF (CMAKE_SYSTEM_NAME STREQUAL "Linux")
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# If using older glibc, need to link with -lrt. See clock_getres(2).
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# If using older glibc, need to link with -lrt. See clock_getres(2).
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EXECUTE_PROCESS(
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include(CheckSymbolExists)
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COMMAND ${PROJECT_SOURCE_DIR}/print-glibc-version.sh ${CMAKE_C_COMPILER}
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check_symbol_exists(clock_getres "time.h" HAS_clock_getres_WITHOUT_LIBRT)
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OUTPUT_VARIABLE GLIBC_VERSION)
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IF(NOT GLIBC_VERSION EQUAL "" AND GLIBC_VERSION VERSION_LESS 2.17)
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if(NOT HAS_clock_getres_WITHOUT_LIBRT)
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SET(LIBS ${LIBS} rt)
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find_library(RT_LIBRARY rt)
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ENDIF()
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set(NEED_LIBRT_FOR_clock_getres ON)
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endif()
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ELSEIF (CMAKE_SYSTEM_NAME STREQUAL "Android")
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ELSEIF (CMAKE_SYSTEM_NAME STREQUAL "Android")
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# for android-ndk >= r19b
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# for android-ndk >= r19b
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set(CMAKE_FIND_ROOT_PATH_MODE_LIBRARY "BOTH")
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set(CMAKE_FIND_ROOT_PATH_MODE_LIBRARY "BOTH")
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@ -1,13 +0,0 @@
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#!/bin/sh
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#
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# Determine glibc version and print it to stdout. I have to resort to
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# using a shell script because it is taking too long to figure out how
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# to do this properly in cmake.
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CC=$1
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if [ "" = "$CC" ]; then
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CC=gcc
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fi
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$CC -print-file-name=libc.so.6 \
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| perl -plne '$_ = readlink if -H; s/\.so$// && s/.*-//'
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@ -119,6 +119,10 @@ SET(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -DXXH_HEADER_NAME=\\\"lsquic_xxhash.h\\\"")
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SET(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -DLSQPACK_ENC_LOGGER_HEADER=\\\"lsquic_qpack_enc_logger.h\\\"")
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SET(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -DLSQPACK_ENC_LOGGER_HEADER=\\\"lsquic_qpack_enc_logger.h\\\"")
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SET(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -DLSQPACK_DEC_LOGGER_HEADER=\\\"lsquic_qpack_dec_logger.h\\\"")
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SET(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -DLSQPACK_DEC_LOGGER_HEADER=\\\"lsquic_qpack_dec_logger.h\\\"")
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if(NEED_LIBRT_FOR_clock_getres)
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target_link_libraries(lsquic PRIVATE ${RT_LIBRARY})
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endif()
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IF(LSQUIC_SHARED_LIB)
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IF(LSQUIC_SHARED_LIB)
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add_library(lsquic SHARED ${lsquic_STAT_SRCS})
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add_library(lsquic SHARED ${lsquic_STAT_SRCS})
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TARGET_LINK_LIBRARIES(lsquic PRIVATE ${BORINGSSL_LIB_ssl} ${BORINGSSL_LIB_crypto} ${ZLIB_LIB})
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TARGET_LINK_LIBRARIES(lsquic PRIVATE ${BORINGSSL_LIB_ssl} ${BORINGSSL_LIB_crypto} ${ZLIB_LIB})
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