本文主要是介绍win10 + cmake3.17 编译 x64位 jpeg-9b（再次更新），希望对大家解决编程问题提供一定的参考价值，需要的开发者们随着小编来一起学习吧！
jpeg-9b中缺乏CMakeLists.txt文件，所以许多教程在编译libjpeg时，都没有用cmake进行编译。我之前写了两个教程也是，虽然通了，但还是比较麻烦。
后来在github上找到了jpeg的CMakeLists.txt文件，把CMakeLists.txt放进jpeg源码文件夹后，可以直接用cmake进行编译。很方便。
jpeg的CMakeLists.txt文件的下载地址是：大家可以在github上搜“osg-3rdparty-cmake-master”，里面有对jpeg编译的CMakeLists.txt。这会儿登录不流畅，暂时不贴网址了。下载下来之后不能直接使用，需要在文件头部添加：
set(LIBJPEG_SOURCE_DIR "./")然后，大家按照正常的cmake流程编译就可以了，很流畅。
我把修改好的CMakeLists.txt贴在下方，大家可以直接拷贝使用：
CMakeLists.txt
cmake_minimum_required(VERSION 3.5 FATAL_ERROR)# parse the full version number from jversion.h and include in JPEG_FULL_VERSION
set(LIBJPEG_SOURCE_DIR "./")
file(READ ${LIBJPEG_SOURCE_DIR}/jversion.h _jversion_h_contents)string(REGEX REPLACE ".*#define[ \t]+JVERSION[ \t]+\"([0-9]+[a-z]+).+\".*""\\1" JPEG_FULL_VERSION ${_jversion_h_contents})
string(REGEX REPLACE "([0-9]+)[a-z]+" "\\1" JPEG_MAJOR_VERSION${JPEG_FULL_VERSION})
string(REGEX REPLACE "[0-9]+([a-z]+)" "\\1" JPEG_MINOR_VERSION${JPEG_FULL_VERSION})# Convert minor version letter to number
if("${JPEG_MINOR_VERSION}" MATCHES [aA])set(JPEG_MINOR_VERSION 0)
elseif("${JPEG_MINOR_VERSION}" MATCHES [bB])set(JPEG_MINOR_VERSION 1)
elseif("${JPEG_MINOR_VERSION}" MATCHES [cC])set(JPEG_MINOR_VERSION 2)
elseif("${JPEG_MINOR_VERSION}" MATCHES [dD])set(JPEG_MINOR_VERSION 3)
elseif("${JPEG_MINOR_VERSION}" MATCHES [eE])set(JPEG_MINOR_VERSION 4)
elseif("${JPEG_MINOR_VERSION}" MATCHES [fF])set(JPEG_MINOR_VERSION 5)
elseif("${JPEG_MINOR_VERSION}" MATCHES [gG])set(JPEG_MINOR_VERSION 6)
elseif("${JPEG_MINOR_VERSION}" MATCHES [hH])set(JPEG_MINOR_VERSION 7)
else()message(FATAL_ERROR "Minor JPEG version exceeds version H")
endif()project(jpegVERSION ${JPEG_MAJOR_VERSION}.${JPEG_MINOR_VERSION}LANGUAGES C)# Use GNUInstallDirs to install libraries into correct locations on all
# platforms.
include(GNUInstallDirs)if(MSVC)set(jconfig "${LIBJPEG_SOURCE_DIR}/jconfig.vc")
endif()if(MINGW)set(jconfig "${LIBJPEG_SOURCE_DIR}/jconfig.vc")
endif()configure_file(${jconfig} jconfig.h @ONLY)
configure_file(${LIBJPEG_SOURCE_DIR}/jerror.h jerror.h COPYONLY)
configure_file(${LIBJPEG_SOURCE_DIR}/jmorecfg.h jmorecfg.h COPYONLY)
configure_file(${LIBJPEG_SOURCE_DIR}/jpeglib.h jpeglib.h COPYONLY)set(LIBJPEG_PUBLIC_HEADERS${CMAKE_CURRENT_BINARY_DIR}/jconfig.h ${CMAKE_CURRENT_BINARY_DIR}/jerror.h${CMAKE_CURRENT_BINARY_DIR}/jmorecfg.h${CMAKE_CURRENT_BINARY_DIR}/jpeglib.h)set(LIBJPEG_PRIVATE_HEADERS${LIBJPEG_SOURCE_DIR}/jdct.h ${LIBJPEG_SOURCE_DIR}/jinclude.h${LIBJPEG_SOURCE_DIR}/jmemsys.h ${LIBJPEG_SOURCE_DIR}/jpegint.h${LIBJPEG_SOURCE_DIR}/jversion.h)set(LIBJPEG_SRCS${LIBJPEG_SOURCE_DIR}/jaricom.c${LIBJPEG_SOURCE_DIR}/jcapimin.c${LIBJPEG_SOURCE_DIR}/jcapistd.c${LIBJPEG_SOURCE_DIR}/jcarith.c${LIBJPEG_SOURCE_DIR}/jccoefct.c${LIBJPEG_SOURCE_DIR}/jccolor.c${LIBJPEG_SOURCE_DIR}/jcdctmgr.c${LIBJPEG_SOURCE_DIR}/jchuff.c${LIBJPEG_SOURCE_DIR}/jcinit.c${LIBJPEG_SOURCE_DIR}/jcmainct.c${LIBJPEG_SOURCE_DIR}/jcmarker.c${LIBJPEG_SOURCE_DIR}/jcmaster.c${LIBJPEG_SOURCE_DIR}/jcomapi.c${LIBJPEG_SOURCE_DIR}/jcparam.c${LIBJPEG_SOURCE_DIR}/jcprepct.c${LIBJPEG_SOURCE_DIR}/jcsample.c${LIBJPEG_SOURCE_DIR}/jctrans.c${LIBJPEG_SOURCE_DIR}/jdapimin.c${LIBJPEG_SOURCE_DIR}/jdapistd.c${LIBJPEG_SOURCE_DIR}/jdarith.c${LIBJPEG_SOURCE_DIR}/jdatadst.c${LIBJPEG_SOURCE_DIR}/jdatasrc.c${LIBJPEG_SOURCE_DIR}/jdcoefct.c${LIBJPEG_SOURCE_DIR}/jdcolor.c${LIBJPEG_SOURCE_DIR}/jddctmgr.c${LIBJPEG_SOURCE_DIR}/jdhuff.c${LIBJPEG_SOURCE_DIR}/jdinput.c${LIBJPEG_SOURCE_DIR}/jdmainct.c${LIBJPEG_SOURCE_DIR}/jdmarker.c${LIBJPEG_SOURCE_DIR}/jdmaster.c${LIBJPEG_SOURCE_DIR}/jdmerge.c${LIBJPEG_SOURCE_DIR}/jdpostct.c${LIBJPEG_SOURCE_DIR}/jdsample.c${LIBJPEG_SOURCE_DIR}/jdtrans.c${LIBJPEG_SOURCE_DIR}/jerror.c${LIBJPEG_SOURCE_DIR}/jfdctflt.c${LIBJPEG_SOURCE_DIR}/jfdctfst.c${LIBJPEG_SOURCE_DIR}/jfdctint.c${LIBJPEG_SOURCE_DIR}/jidctflt.c${LIBJPEG_SOURCE_DIR}/jidctfst.c${LIBJPEG_SOURCE_DIR}/jidctint.c${LIBJPEG_SOURCE_DIR}/jmemmgr.c${LIBJPEG_SOURCE_DIR}/jmemnobs.c${LIBJPEG_SOURCE_DIR}/jquant1.c${LIBJPEG_SOURCE_DIR}/jquant2.c${LIBJPEG_SOURCE_DIR}/jutils.c)# Dependent include files
include_directories(${LIBJPEG_SOURCE_DIR} ${CMAKE_CURRENT_BINARY_DIR})if(MSVC)list(APPEND PRIVATE_DEFINITIONS -D_CRT_SECURE_NO_WARNINGS) # Disable warnings# for unsecure CRT# functionslist(APPEND PRIVATE_DEFINITIONS -D_LIB)list(APPEND PRIVATE_OPTIONS /Gy) # Eliminate Duplicate Stringsset(CMAKE_DEBUG_POSTFIX "d")
endif(MSVC)add_library(jpeg STATIC ${LIBJPEG_SRCS} ${LIBJPEG_PRIVATE_HEADERS}${LIBJPEG_PUBLIC_HEADERS})# Dependent include files
target_include_directories(jpeg PUBLIC $<BUILD_INTERFACE:${CMAKE_CURRENT_BINARY_DIR}>$<INSTALL_INTERFACE:include>)target_compile_definitions(jpeg PRIVATE ${PRIVATE_DEFINITIONS})target_compile_options(jpeg PRIVATE ${PRIVATE_OPTIONS})# INSTALL
install(TARGETS jpegEXPORT jpeg_exportRUNTIME DESTINATION ${CMAKE_INSTALL_BINDIR}LIBRARY DESTINATION ${CMAKE_INSTALL_LIBDIR}ARCHIVE DESTINATION ${CMAKE_INSTALL_LIBDIR}INCLUDESDESTINATION ${CMAKE_INSTALL_INCLUDEDIR})install(FILES ${LIBJPEG_PUBLIC_HEADERS} DESTINATION ${CMAKE_INSTALL_INCLUDEDIR})
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