UUID生成库libuuid和crossguid
libuuid是一个开源的用于生成UUID(Universally Unique Identifier,通用唯一标识符)的库。
可从https://sourceforge.net/projects/libuuid/ 下载,最新版本为1.0.3,更新于2013年4月27日,此库仅支持在类Linux下编译使用。
之前在Windows上,我们产生guid(uuid在Windows上的叫法,是一个东西)可以使用API函数CoCreateGuid。
CrossGuid是一个最小的跨平台C ++ GUID库。它在给定平台上使用最好的本机GUID / UUID生成器,并具有用于解析,字符串化和比较ID的通用类。
可从https://github.com/graeme-hill/crossguid下载使用
接下来,我们在linux ubuntu上编译学习以下这两个库:
- libuuid

libuuid已经为我们提供了configure,直接./configure & make & make install三部曲即可,最终编译生成libuuid.a供程序链接使用,自带的一个C测试例子test_uuid.c,全部的终端执行如下:
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michael@ubuntu:~/git$ cd ./libuuid-/
michael@ubuntu:~/git/libuuid-.3$ ls aclocal.m4 config.h.in depcomp Makefile.in test_uuid.c uuidP.h all-io.h config.sub gen_uuid.c missing unpack.c uuid_time.c c.h configure install-sh pack.c unparse.c clear.c configure.ac isnull.c parse.c uuidd.h compare.c copy.c ltmain.sh randutils.c uuid.h config.guess COPYING Makefile.am randutils.h uuid.pc.in michael@ubuntu:~/git/libuuid-.3$ ./configure checking for a BSD-compatible install... /usr/bin/install -c checking whether build environment is sane... yes checking for a thread-safe mkdir -p... /bin/mkdir -p checking for gawk... no checking for mawk... mawk checking whether make sets $(MAKE)... yes checking whether make supports nested variables... yes checking build system type... x86_64-unknown-linux-gnu checking host system type... x86_64-unknown-linux-gnu checking how to print strings... printf checking for style of include used by make... GNU checking for gcc... gcc checking whether the C compiler works... yes checking for C compiler default output file name... a.out checking for suffix of executables... checking whether we are cross compiling... no checking for suffix of object files... o checking whether we are using the GNU C compiler... yes checking whether gcc accepts -g... yes checking for gcc option to accept ISO C89... none needed checking dependency style of gcc... gcc3 checking for a sed that does not truncate output... /bin/sed checking for grep that handles long lines and -e... /bin/grep checking for egrep... /bin/grep -E checking for fgrep... /bin/grep -F checking for ld used by gcc... /usr/bin/ld checking if the linker (/usr/bin/ld) is GNU ld... yes checking for BSD- or MS-compatible name lister (nm)... /usr/bin/nm -B checking the name lister (/usr/bin/nm -B) interface... BSD nm checking whether ln -s works... yes checking the maximum checking whether the shell understands some XSI constructs... yes checking whether the shell understands "+="... yes checking how to convert x86_64-unknown-linux-gnu file names to x86_64-unknown-linux-gnu format... func_convert_file_noop checking how to convert x86_64-unknown-linux-gnu file names to toolchain format... func_convert_file_noop checking for /usr/bin/ld option to reload object files... -r checking for objdump... objdump checking how to recognize dependent libraries... pass_all checking for dlltool... no checking how to associate runtime and link libraries... printf %s\n checking for ar... ar checking for archiver @FILE support... @ checking for strip... strip checking for ranlib... ranlib checking command to parse /usr/bin/nm -B output from gcc object... ok checking for sysroot... no checking for mt... mt checking if mt is a manifest tool... no checking how to run the C preprocessor... gcc -E checking for ANSI C header files... yes checking for sys/types.h... yes checking for sys/stat.h... yes checking for stdlib.h... yes checking for string.h... yes checking for memory.h... yes checking for strings.h... yes checking for inttypes.h... yes checking for stdint.h... yes checking for unistd.h... yes checking for dlfcn.h... yes checking for objdir... .libs checking if gcc supports -fno-rtti -fno-exceptions... no checking for gcc option to produce PIC... -fPIC -DPIC checking if gcc PIC flag -fPIC -DPIC works... yes checking if gcc static flag -static works... yes checking if gcc supports -c -o file.o... yes checking if gcc supports -c -o file.o... (cached) yes checking whether the gcc linker (/usr/bin/ld -m elf_x86_64) supports shared libraries... yes checking whether -lc should be explicitly linked in... no checking dynamic linker characteristics... GNU/Linux ld.so checking how to hardcode library paths into programs... immediate checking whether stripping libraries is possible... yes checking if libtool supports shared libraries... yes checking whether to build shared libraries... yes checking whether to build static libraries... yes checking for gcc... (cached) gcc checking whether we are using the GNU C compiler... (cached) yes checking whether gcc accepts -g... (cached) yes checking for gcc option to accept ISO C89... (cached) none needed checking dependency style of gcc... (cached) gcc3 checking for library containing socket... none required checking fcntl.h usability... yes checking fcntl.h presence... yes checking for fcntl.h... yes checking for inttypes.h... (cached) yes checking limits.h usability... yes checking limits.h presence... yes checking for limits.h... yes checking netinet/in.h usability... yes checking netinet/in.h presence... yes checking for netinet/in.h... yes checking for stdlib.h... (cached) yes checking for string.h... (cached) yes checking sys/file.h usability... yes checking sys/file.h presence... yes checking for sys/file.h... yes checking sys/ioctl.h usability... yes checking sys/ioctl.h presence... yes checking for sys/ioctl.h... yes checking sys/socket.h usability... yes checking sys/socket.h presence... yes checking for sys/socket.h... yes checking sys/time.h usability... yes checking sys/time.h presence... yes checking for sys/time.h... yes checking for unistd.h... (cached) yes checking whether _SC_HOST_NAME_MAX is declared... yes checking for int32_t... yes checking for mode_t... yes checking for size_t... yes checking for ssize_t... yes checking for uint16_t... yes checking for uint32_t... yes checking for uint64_t... yes checking for uint8_t... yes checking for ftruncate... yes checking for gettimeofday... yes checking for memset... yes checking for socket... yes checking for strtoul... yes checking for usleep... yes checking for srandom... yes checking that generated files are newer than configure... done configure: creating ./config.status config.status: creating Makefile config.status: creating uuid.pc config.status: creating config.h config.status: executing depfiles commands config.status: executing libtool commands michael@ubuntu:~/git/libuuid-.3$ make make all-am make[]: Entering directory '/home/michael/git/libuuid-1.0.3' /bin/bash ./libtool --tag=CC --mode=compile gcc -DHAVE_CONFIG_H -I. -I. -g -O2 -MT libuuid_la-clear.lo -MD -MP -MF .deps/libuuid_la-clear.Tpo -c -o libuuid_la-clear.lo `test -f 'clear.c' || echo './'`clear.c libtool: compile: gcc -DHAVE_CONFIG_H -I. -I. -g -O2 -MT libuuid_la-clear.lo -MD -MP -MF .deps/libuuid_la-clear.Tpo -c clear.c -fPIC -DPIC -o .libs/libuuid_la-clear.o libtool: compile: gcc -DHAVE_CONFIG_H -I. -I. -g -O2 -MT libuuid_la-clear.lo -MD -MP -MF .deps/libuuid_la-clear.Tpo -c clear.c -o libuuid_la-clear.o >/dev/null mv -f .deps/libuuid_la-clear.Tpo .deps/libuuid_la-clear.Plo /bin/bash ./libtool --tag=CC --mode=compile gcc -DHAVE_CONFIG_H -I. -I. -g -O2 -MT libuuid_la-compare.lo -MD -MP -MF .deps/libuuid_la-compare.Tpo -c -o libuuid_la-compare.lo `test -f 'compare.c' || echo './'`compare.c libtool: compile: gcc -DHAVE_CONFIG_H -I. -I. -g -O2 -MT libuuid_la-compare.lo -MD -MP -MF .deps/libuuid_la-compare.Tpo -c compare.c -fPIC -DPIC -o .libs/libuuid_la-compare.o libtool: compile: gcc -DHAVE_CONFIG_H -I. -I. -g -O2 -MT libuuid_la-compare.lo -MD -MP -MF .deps/libuuid_la-compare.Tpo -c compare.c -o libuuid_la-compare.o >/dev/null mv -f .deps/libuuid_la-compare.Tpo .deps/libuuid_la-compare.Plo /bin/bash ./libtool --tag=CC --mode=compile gcc -DHAVE_CONFIG_H -I. -I. -g -O2 -MT libuuid_la-copy.lo -MD -MP -MF .deps/libuuid_la-copy.Tpo -c -o libuuid_la-copy.lo `test -f 'copy.c' || echo './'`copy.c libtool: compile: gcc -DHAVE_CONFIG_H -I. -I. -g -O2 -MT libuuid_la-copy.lo -MD -MP -MF .deps/libuuid_la-copy.Tpo -c copy.c -fPIC -DPIC -o .libs/libuuid_la-copy.o libtool: compile: gcc -DHAVE_CONFIG_H -I. -I. -g -O2 -MT libuuid_la-copy.lo -MD -MP -MF .deps/libuuid_la-copy.Tpo -c copy.c -o libuuid_la-copy.o >/dev/null mv -f .deps/libuuid_la-copy.Tpo .deps/libuuid_la-copy.Plo /bin/bash ./libtool --tag=CC --mode=compile gcc -DHAVE_CONFIG_H -I. -I. -g -O2 -MT libuuid_la-gen_uuid.lo -MD -MP -MF .deps/libuuid_la-gen_uuid.Tpo -c -o libuuid_la-gen_uuid.lo `test -f 'gen_uuid.c' || echo './'`gen_uuid.c libtool: compile: gcc -DHAVE_CONFIG_H -I. -I. -g -O2 -MT libuuid_la-gen_uuid.lo -MD -MP -MF .deps/libuuid_la-gen_uuid.Tpo -c gen_uuid.c -fPIC -DPIC -o .libs/libuuid_la-gen_uuid.o In file included from /usr/include/x86_64-linux-gnu/bits/libc-header-start.h:, from /usr/include/stdio.h:, from gen_uuid.c:: /usr/include/features.h:: warning: #warning "_BSD_SOURCE and _SVID_SOURCE are deprecated, use _DEFAULT_SOURCE" [-Wcpp] # warning "_BSD_SOURCE and _SVID_SOURCE are deprecated, use _DEFAULT_SOURCE" ^~~~~~~ gen_uuid.c: In function 'get_clock': gen_uuid.c:: warning: implicit declaration of function 'flock'; did you mean 'clock'? [-Wimplicit-function-declaration] ) { ^~~~~ clock libtool: compile: gcc -DHAVE_CONFIG_H -I. -I. -g -O2 -MT libuuid_la-gen_uuid.lo -MD -MP -MF .deps/libuuid_la-gen_uuid.Tpo -c gen_uuid.c -o libuuid_la-gen_uuid.o >/dev/null mv -f .deps/libuuid_la-gen_uuid.Tpo .deps/libuuid_la-gen_uuid.Plo /bin/bash ./libtool --tag=CC --mode=compile gcc -DHAVE_CONFIG_H -I. -I. -g -O2 -MT libuuid_la-isnull.lo -MD -MP -MF .deps/libuuid_la-isnull.Tpo -c -o libuuid_la-isnull.lo `test -f 'isnull.c' || echo './'`isnull.c libtool: compile: gcc -DHAVE_CONFIG_H -I. -I. -g -O2 -MT libuuid_la-isnull.lo -MD -MP -MF .deps/libuuid_la-isnull.Tpo -c isnull.c -fPIC -DPIC -o .libs/libuuid_la-isnull.o libtool: compile: gcc -DHAVE_CONFIG_H -I. -I. -g -O2 -MT libuuid_la-isnull.lo -MD -MP -MF .deps/libuuid_la-isnull.Tpo -c isnull.c -o libuuid_la-isnull.o >/dev/null mv -f .deps/libuuid_la-isnull.Tpo .deps/libuuid_la-isnull.Plo /bin/bash ./libtool --tag=CC --mode=compile gcc -DHAVE_CONFIG_H -I. -I. -g -O2 -MT libuuid_la-pack.lo -MD -MP -MF .deps/libuuid_la-pack.Tpo -c -o libuuid_la-pack.lo `test -f 'pack.c' || echo './'`pack.c libtool: compile: gcc -DHAVE_CONFIG_H -I. -I. -g -O2 -MT libuuid_la-pack.lo -MD -MP -MF .deps/libuuid_la-pack.Tpo -c pack.c -fPIC -DPIC -o .libs/libuuid_la-pack.o libtool: compile: gcc -DHAVE_CONFIG_H -I. -I. -g -O2 -MT libuuid_la- mv -f .deps/libuuid_la-pack.Tpo .deps/libuuid_la-pack.Plo /bin/bash ./libtool --tag=CC --mode=compile gcc -DHAVE_CONFIG_H -I. -I. -g -O2 -MT libuuid_la-parse.lo -MD -MP -MF .deps/libuuid_la-parse.Tpo -c -o libuuid_la-parse.lo `test -f 'parse.c' || echo './'`parse.c libtool: compile: gcc -DHAVE_CONFIG_H -I. -I. -g -O2 -MT libuuid_la-parse.lo -MD -MP -MF .deps/libuuid_la-parse.Tpo -c parse.c -fPIC -DPIC -o .libs/libuuid_la-parse.o libtool: compile: gcc -DHAVE_CONFIG_H -I. -I. -g -O2 -MT libuuid_la-parse.lo -MD -MP -MF .deps/libuuid_la-parse.Tpo -c parse.c -o libuuid_la-parse.o >/dev/null mv -f .deps/libuuid_la-parse.Tpo .deps/libuuid_la-parse.Plo /bin/bash ./libtool --tag=CC --mode=compile gcc -DHAVE_CONFIG_H -I. -I. -g -O2 -MT libuuid_la-unpack.lo -MD -MP -MF .deps/libuuid_la-unpack.Tpo -c -o libuuid_la-unpack.lo `test -f 'unpack.c' || echo './'`unpack.c libtool: compile: gcc -DHAVE_CONFIG_H -I. -I. -g -O2 -MT libuuid_la-unpack.lo -MD -MP -MF .deps/libuuid_la-unpack.Tpo -c unpack.c -fPIC -DPIC -o .libs/libuuid_la-unpack.o libtool: compile: gcc -DHAVE_CONFIG_H -I. -I. -g -O2 -MT libuuid_la- mv -f .deps/libuuid_la-unpack.Tpo .deps/libuuid_la-unpack.Plo /bin/bash ./libtool --tag=CC --mode=compile gcc -DHAVE_CONFIG_H -I. -I. -g -O2 -MT libuuid_la-unparse.lo -MD -MP -MF .deps/libuuid_la-unparse.Tpo -c -o libuuid_la-unparse.lo `test -f 'unparse.c' || echo './'`unparse.c libtool: compile: gcc -DHAVE_CONFIG_H -I. -I. -g -O2 -MT libuuid_la-unparse.lo -MD -MP -MF .deps/libuuid_la-unparse.Tpo -c unparse.c -fPIC -DPIC -o .libs/libuuid_la-unparse.o libtool: compile: gcc -DHAVE_CONFIG_H -I. -I. -g -O2 -MT libuuid_la-unparse.lo -MD -MP -MF .deps/libuuid_la-unparse.Tpo -c unparse.c -o libuuid_la-unparse.o >/dev/null mv -f .deps/libuuid_la-unparse.Tpo .deps/libuuid_la-unparse.Plo /bin/bash ./libtool --tag=CC --mode=compile gcc -DHAVE_CONFIG_H -I. -I. -g -O2 -MT libuuid_la-uuid_time.lo -MD -MP -MF .deps/libuuid_la-uuid_time.Tpo -c -o libuuid_la-uuid_time.lo `test -f 'uuid_time.c' || echo './'`uuid_time.c libtool: compile: gcc -DHAVE_CONFIG_H -I. -I. -g -O2 -MT libuuid_la-uuid_time.lo -MD -MP -MF .deps/libuuid_la-uuid_time.Tpo -c uuid_time.c -fPIC -DPIC -o .libs/libuuid_la-uuid_time.o libtool: compile: gcc -DHAVE_CONFIG_H -I. -I. -g -O2 -MT libuuid_la-uuid_time.lo -MD -MP -MF .deps/libuuid_la-uuid_time.Tpo -c uuid_time.c -o libuuid_la-uuid_time.o >/dev/null mv -f .deps/libuuid_la-uuid_time.Tpo .deps/libuuid_la-uuid_time.Plo /bin/bash ./libtool --tag=CC --mode=compile gcc -DHAVE_CONFIG_H -I. -I. -g -O2 -MT libuuid_la-randutils.lo -MD -MP -MF .deps/libuuid_la-randutils.Tpo -c -o libuuid_la-randutils.lo `test -f 'randutils.c' || echo './'`randutils.c libtool: compile: gcc -DHAVE_CONFIG_H -I. -I. -g -O2 -MT libuuid_la-randutils.lo -MD -MP -MF .deps/libuuid_la-randutils.Tpo -c randutils.c -fPIC -DPIC -o .libs/libuuid_la-randutils.o libtool: compile: gcc -DHAVE_CONFIG_H -I. -I. -g -O2 -MT libuuid_la-randutils.lo -MD -MP -MF .deps/libuuid_la-randutils.Tpo -c randutils.c -o libuuid_la-randutils.o >/dev/null mv -f .deps/libuuid_la-randutils.Tpo .deps/libuuid_la-randutils.Plo /bin/bash ./libtool --tag=CC --mode= -o libuuid.la -rpath /usr/local/lib libuuid_la-clear.lo libuuid_la-compare.lo libuuid_la-copy.lo libuuid_la-gen_uuid.lo libuuid_la-isnull.lo libuuid_la-pack.lo libuuid_la-parse.lo libuuid_la-unpack.lo libuuid_la-unparse.lo libuuid_la-uuid_time.lo libuuid_la-randutils.lo libtool: libtool: link: (cd ".libs" && rm -f "libuuid.so.1" && ln -s "libuuid.so.1.0.0" "libuuid.so.1") libtool: link: (cd ".libs" && rm -f "libuuid.so" && ln -s "libuuid.so.1.0.0" "libuuid.so") libtool: link: ar cru .libs/libuuid.a libuuid_la-clear.o libuuid_la-compare.o libuuid_la-copy.o libuuid_la-gen_uuid.o libuuid_la-isnull.o libuuid_la-pack.o libuuid_la-parse.o libuuid_la-unpack.o libuuid_la-unparse.o libuuid_la-uuid_time.o libuuid_la-randutils.o ar: `u' modifier ignored since `D' is the default (see `U') libtool: link: ranlib .libs/libuuid.a libtool: link: ( cd ".libs" && rm -f "libuuid.la" && ln -s "../libuuid.la" "libuuid.la" ) make[]: Leaving directory '/home/michael/git/libuuid-1.0.3' michael@ubuntu:~/git/libuuid-.3$ make install make[]: Entering directory '/home/michael/git/libuuid-1.0.3' /bin/mkdir -p '/usr/local/lib' /bin/bash ./libtool --mode=install /usr/bin/install -c libuuid.la '/usr/local/lib' libtool: install: /usr/bin/install -c .libs/libuuid.so. /usr/bin/install: cannot create regular file '/usr/local/lib/libuuid.so.1.0.0': Permission denied make[ make[]: Leaving directory '/home/michael/git/libuuid-1.0.3' make: *** [Makefile: michael@ubuntu:~/git/libuuid-.3$ sudo make install [sudo] password for michael: make[]: Entering directory '/home/michael/git/libuuid-1.0.3' /bin/mkdir -p '/usr/local/lib' /bin/bash ./libtool --mode=install /usr/bin/install -c libuuid.la '/usr/local/lib' libtool: install: /usr/bin/install -c .libs/libuuid.so. libtool: install: (cd /usr/; }; }) libtool: install: (cd /usr/ libuuid.so; }; }) libtool: install: /usr/bin/install -c .libs/libuuid.lai /usr/local/lib/libuuid.la libtool: install: /usr/bin/install -c .libs/libuuid.a /usr/local/lib/libuuid.a libtool: install: /usr/local/lib/libuuid.a libtool: install: ranlib /usr/local/lib/libuuid.a libtool: finish: PATH="/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/snap/bin:/sbin" ldconfig -n /usr/local/lib ---------------------------------------------------------------------- Libraries have been installed in: /usr/local/lib If you ever happen to want to link against installed libraries See any operating system documentation about shared libraries for UUID random string = dacba404--47c3-b8de-f451f843b849 UUID string = 6c7dffbe-d07d-11e9-9d41-000c2977e04e UUID parse and compare succeeded. |
- crossguid

crossguid则为我们提供了CMakeLists.txt,方便我们使用cmake的方式来构建,构建成功后会生成一个libcrossguid.a 静态库和测试程序 crossguid-test ,全部的终端执行如下:
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michael@ubuntu:~$ cd ./git/crossguid-master/
michael@ubuntu:~/git/crossguid-master$ ls android cmake crossguid.pc.in LICENSE src android.sh CMakeLists.txt include README.md test michael@ubuntu:~/git/crossguid-master$ mkdir build michael@ubuntu:~/git/crossguid-master$ cd ./build/ michael@ubuntu:~/git/crossguid-master/build$ cmake --version cmake version CMake suite maintained and supported by Kitware (kitware.com/cmake). make: *** [Makefile: |
具体函数使用请参考官方文档,本文到此为止。
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