Ubuntu下使用CMake编译OpenSSL源码操作步骤(C语言)

OpenSSL的版本为1.0.1g，在ubuntu下通过CMake仅编译c代码不包括汇编代码，脚本内容如下：

build.sh内容：

#! /bin/bash

real_path=$(realpath $0)
dir_name=`dirname "${real_path}"`
echo "real_path: ${real_path}, dir_name: ${dir_name}"

new_dir_name=${dir_name}/build
mkdir -p ${new_dir_name}
cd ${new_dir_name}
echo "pos: ${new_dir_name}"
if [ "$(ls -A ${new_dir_name})" ]; then
	echo "directory is not empty: ${new_dir_name}"
	#rm -r *
else
	echo "directory is empty: ${new_dir_name}"
fi

cd -
# build libcurl
echo "========== start build libcurl =========="
libcurl_path=${dir_name}/../../src/curl
if [ -f ${curl_path}/build/lib/libcurl.so ]; then
	echo "libcurl dynamic library already exists without recompiling"
else
	mkdir -p ${libcurl_path}/build
	cd ${libcurl_path}/build
	cmake  -DBUILD_SHARED_LIBS=ON ..
	make
fi

ln -s ${libcurl_path}/build/lib/libcurl* ${new_dir_name}
echo "========== finish build libcurl =========="

rc=$?
if [[ ${rc} != 0 ]]; then
	echo "########## Error: some of thess commands have errors above, please check"
	exit ${rc}
fi

cd -
cd ${new_dir_name}
cmake ..
make

cd -

CMakeLists.txt内容：

PROJECT(OpenSSL_Test)
CMAKE_MINIMUM_REQUIRED(VERSION 3.0)

# support C++11
SET(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -std=c11")
SET(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=c++11")
# support C++14, when gcc version > 5.1, use -std=c++14 instead of c++1y
SET(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=c++1y")

IF(NOT CMAKE_BUILD_TYPE)
	SET(CMAKE_BUILD_TYPE "Release")
	SET(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -Wall -O2")
	SET(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wall -O2")
ELSE()
	SET(CMAKE_BUILD_TYPE "Debug")
	SET(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -g -Wall -O2")
	SET(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -g -Wall -O2")
ENDIF()
MESSAGE(STATUS "cmake build type: ${CMAKE_BUILD_TYPE}")

ADD_DEFINITIONS(-DOPENSSL_NO_ASM)
ADD_DEFINITIONS(-D_DEFAULT_SOURCE=1) # fix bss_dgram.c: error: 'const struct in6_addr' has no member named 's6_addr32'

MESSAGE(STATUS "cmake current source dir: ${CMAKE_CURRENT_SOURCE_DIR}")
SET(PATH_TEST_FILES ${CMAKE_CURRENT_SOURCE_DIR}/./../../demo/OpenSSL_Test)
SET(PATH_SRC_OPENSSL_FILES ${CMAKE_CURRENT_SOURCE_DIR}/./../../src/crypto/openssl)
SET(PATH_SRC_B64_FILES ${CMAKE_CURRENT_SOURCE_DIR}/./../../src)
SET(PATH_SRC_CPPCODEC_FILES ${CMAKE_CURRENT_SOURCE_DIR}/./../../src/cppcodec)
SET(PATH_SRC_CURL_FILES ${CMAKE_CURRENT_SOURCE_DIR}/./../../src/curl)
SET(PATH_SRC_HTTP_PARSER_FILES ${CMAKE_CURRENT_SOURCE_DIR}/./../../src)
MESSAGE(STATUS "path test files: ${PATH_TEST_FILES}")

SET(PATH_OPENCV /opt/opencv3.4.2)
IF(EXISTS ${PATH_OPENCV})
	MESSAGE(STATUS "Found OpenCV: ${PATH_OPENCV}")
ELSE()
	MESSAGE(FATAL_ERROR "Can not find OpenCV in ${PATH_OPENCV}")
ENDIF()

# head file search path
INCLUDE_DIRECTORIES(
	${PATH_TEST_FILES}
	${PATH_OPENCV}/include
	${PATH_SRC_OPENSSL_FILES}
	${PATH_SRC_OPENSSL_FILES}/include
	${PATH_SRC_B64_FILES}
	${PATH_SRC_CPPCODEC_FILES}
	${PATH_SRC_HPPT_PARSER_FILES}
	${PATH_SRC_CURL_FILES}/include
	${PATH_SRC_CURL_FILES}/build
)

# build openssl
SET(OPENSSL_SRC_LIST )
FILE(GLOB_RECURSE OPENSSL_SRC_LIST ${PATH_SRC_OPENSSL_FILES}/*.c)
# remove unuse .c file
LIST(REMOVE_ITEM OPENSSL_SRC_LIST
	${PATH_SRC_OPENSSL_FILES}/crypto/LPdir_nyi.c
	${PATH_SRC_OPENSSL_FILES}/crypto/LPdir_unix.c
	${PATH_SRC_OPENSSL_FILES}/crypto/LPdir_vms.c
	${PATH_SRC_OPENSSL_FILES}/crypto/LPdir_win.c
	${PATH_SRC_OPENSSL_FILES}/crypto/LPdir_win32.c
	${PATH_SRC_OPENSSL_FILES}/crypto/LPdir_wince.c
	${PATH_SRC_OPENSSL_FILES}/crypto/aes/aes_x86core.c
	${PATH_SRC_OPENSSL_FILES}/crypto/armcap.c
	${PATH_SRC_OPENSSL_FILES}/crypto/bio/bss_rtcp.c
	${PATH_SRC_OPENSSL_FILES}/crypto/bn/asm/x86_64-gcc.c
	${PATH_SRC_OPENSSL_FILES}/crypto/bn/exp.c
	${PATH_SRC_OPENSSL_FILES}/crypto/conf/cnf_save.c
	${PATH_SRC_OPENSSL_FILES}/crypto/conf/test.c
	${PATH_SRC_OPENSSL_FILES}/crypto/cversion.c
	${PATH_SRC_OPENSSL_FILES}/crypto/des/des_opts.c
	${PATH_SRC_OPENSSL_FILES}/crypto/des/read_pwd.c
	${PATH_SRC_OPENSSL_FILES}/crypto/evp/e_aes.c
	${PATH_SRC_OPENSSL_FILES}/crypto/evp/e_dsa.c
	${PATH_SRC_OPENSSL_FILES}/crypto/lhash/lh_test.c
	${PATH_SRC_OPENSSL_FILES}/crypto/pkcs7/bio_ber.c
	${PATH_SRC_OPENSSL_FILES}/crypto/pkcs7/pk7_enc.c
	${PATH_SRC_OPENSSL_FILES}/crypto/rc2/rc2speed.c
	${PATH_SRC_OPENSSL_FILES}/crypto/rc4/rc4.c
	${PATH_SRC_OPENSSL_FILES}/crypto/x509v3/v3conf.c
	${PATH_SRC_OPENSSL_FILES}/ssl/ssl_task.c
)

INCLUDE_DIRECTORIES(${PATH_SRC_OPENSSL_FILES}/crypto)
INCLUDE_DIRECTORIES(${PATH_SRC_OPENSSL_FILES}/crypto/asn1)
INCLUDE_DIRECTORIES(${PATH_SRC_OPENSSL_FILES}/crypto/evp)
ADD_LIBRARY(openssl STATIC ${OPENSSL_SRC_LIST})

# find opencv library
FIND_LIBRARY(opencv_core NAMES opencv_core PATHS ${PATH_OPENCV}/lib NO_DEFAULT_PATH)
FIND_LIBRARY(opencv_imgproc NAMES opencv_imgproc PATHS ${PATH_OPENCV}/lib NO_DEFAULT_PATH)
FIND_LIBRARY(opencv_highgui NAMES opencv_highgui PATHS ${PATH_OPENCV}/lib NO_DEFAULT_PATH)
FIND_LIBRARY(opencv_imgcodecs NAMES opencv_imgcodecs PATHS ${PATH_OPENCV}/lib NO_DEFAULT_PATH)
FIND_LIBRARY(opencv_video NAMES opencv_video PATHS ${PATH_OPENCV}/lib NO_DEFAULT_PATH)
FIND_LIBRARY(opencv_videoio NAMES opencv_videoio PATHS ${PATH_OPENCV}/lib NO_DEFAULT_PATH)
FIND_LIBRARY(opencv_objdetect NAMES opencv_objdetect PATHS ${PATH_OPENCV}/lib NO_DEFAULT_PATH)
FIND_LIBRARY(opencv_ml NAMES opencv_ml PATHS ${PATH_OPENCV}/lib NO_DEFAULT_PATH)
MESSAGE(STATUS "opencv libraries: ${opencv_core} ${opencv_imgproc} ${opencv_highgui} ${opencv_imgcodecs} ${opencv_video} ${opencv_videoio} ${opencv_objdetect} ${opencv_ml}")

# find dep library
SET(DEP_LIB_DIR ${CMAKE_CURRENT_SOURCE_DIR}/build CACHE PATH "dep library path")
MESSAGE(STATUS "dep library dir: ${DEP_LIB_DIR}")
LINK_DIRECTORIES(${DEP_LIB_DIR})

# recursive query match files :*.cpp, *.cc, *.c
FILE(GLOB_RECURSE TEST_CPP_LIST ${PATH_TEST_FILES}/*.cpp)
FILE(GLOB_RECURSE TEST_CC_LIST ${PATH_TEST_FILES}/*.cc)
SET(SRC_C_LIST )
LIST(APPEND SRC_C_LIST ${PATH_SRC_B64_FILES}/b64/decode.c)
LIST(APPEND SRC_C_LIST ${PATH_SRC_B64_FILES}/b64/encode.c)
LIST(APPEND SRC_C_LIST ${PATH_SRC_HTTP_PARSER_FILES}/http-parser/http_parser.c)
MESSAGE(STATUS "test cpp list: ${TEST_CPP_LIST} ${TEST_C_LIST} ${SRC_C_LIST}")

# build executable program
ADD_EXECUTABLE(OpenSSL_Test ${TEST_CPP_LIST} ${TEST_CC_LIST} ${SRC_C_LIST})
# add dependent library: static and dynamic
TARGET_LINK_LIBRARIES(OpenSSL_Test
	openssl
	${DEP_LIB_DIR}/libcurl.so
	${opencv_ml}
	${opencv_core}
	${opencv_imgproc}
	${opencv_highgui}
	${opencv_imgcodecs}
	${opencv_video}
	${opencv_videoio}
	${opencv_objdetect}
	pthread
)

在https://github.com/fengbingchun/OpenSSL_Test/blob/master/demo/OpenSSL_Test/funset_openssl.cpp 文件中包含了RC4、DES、RSA、MD5的使用测试代码。

GitHub： https://github.com/fengbingchun/OpenSSL_Test

Ubuntu下使用CMake编译OpenSSL源码操作步骤(C语言)

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