你好，我在 laravel homestead ( vagrant ) 上安装 v8js 时遇到问题

看完这两个图之后

1. Install v8js on Linux (works with Homestead) !

2. Installing PHPv8js on Ubuntu !

我启动了下面的命令

$ sudo apt-get install libv8-dev libv8-dbg g++ cpp
$ sudo pecl install v8js-0.1.3

另请注意，当它询问我 libv8 的安装前缀时，我输入了 /opt/v8

编辑:根据用户的要求，我发布了错误代码并删除了相同的屏幕截图

这是我的错误代码

当我运行第一个命令时出现此错误

$ sudo apt-get install libv8-dev libv8-dbg g++ cpp
Reading package lists... Done
Building dependency tree       
Reading state information... Done
Package libv8-dbg is not available, but is referred to by another package.
This may mean that the package is missing, has been obsoleted, or
is only available from another source

E: Package 'libv8-dbg' has no installation candidate

当我运行第二个命令时，它要求我提供 libv8 的安装前缀...我键入 /opt/v8 并收到以下错误

$ sudo pecl install v8js-0.1.3
downloading v8js-0.1.3.tgz ...
Starting to download v8js-0.1.3.tgz (17,968 bytes)
......done: 17,968 bytes
8 source files, building
running: phpize
Configuring for:
PHP Api Version:         20151012
Zend Module Api No:      20151012
Zend Extension Api No:   320151012
Please provide the installation prefix of libv8 [autodetect] : /opt/v8
building in /tmp/pear/temp/pear-build-rootlo1BwQ/v8js-0.1.3
running: /tmp/pear/temp/v8js/configure --with-php-config=/usr/bin/php-config --with-v8js=/opt/v8
checking for grep that handles long lines and -e... /bin/grep
checking for egrep... /bin/grep -E
checking for a sed that does not truncate output... /bin/sed
checking for cc... cc
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 cc accepts -g... yes
checking for cc option to accept ISO C89... none needed
checking how to run the C preprocessor... cc -E
checking for icc... no
checking for suncc... no
checking whether cc understands -c and -o together... yes
checking for system library directory... lib
checking if compiler supports -R... no
checking if compiler supports -Wl,-rpath,... yes
checking build system type... x86_64-unknown-linux-gnu
checking host system type... x86_64-unknown-linux-gnu
checking target system type... x86_64-unknown-linux-gnu
checking for PHP prefix... /usr
checking for PHP includes... -I/usr/include/php/20151012 -I/usr/include/php/20151012/main -I/usr/include/php/20151012/TSRM -I/usr/include/php/20151012/Zend -I/usr/include/php/20151012/ext -I/usr/include/php/20151012/ext/date/lib
checking for PHP extension directory... /usr/lib/php/20151012
checking for PHP installed headers prefix... /usr/include/php/20151012
checking if debug is enabled... no
checking if zts is enabled... no
checking for re2c... re2c
checking for re2c version... 0.13.5 (ok)
checking for gawk... no
checking for nawk... nawk
checking if nawk is broken... no
checking for V8 Javascript Engine... yes, shared
checking for V8 files in default path... found in /usr
checking for g++... g++
checking whether we are using the GNU C++ compiler... yes
checking whether g++ accepts -g... yes
checking how to run the C++ preprocessor... g++ -E
checking for V8 version... 3.14.5.9
checking how to print strings... printf
checking for a sed that does not truncate output... (cached) /bin/sed
checking for fgrep... /bin/grep -F
checking for ld used by cc... /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 length of command line arguments... 1572864
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 for gawk... (cached) nawk
checking command to parse /usr/bin/nm -B output from cc object... ok
checking for sysroot... no
checking for mt... mt
checking if mt is a manifest tool... no
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 cc supports -fno-rtti -fno-exceptions... no
checking for cc option to produce PIC... -fPIC -DPIC
checking if cc PIC flag -fPIC -DPIC works... yes
checking if cc static flag -static works... yes
checking if cc supports -c -o file.o... yes
checking if cc supports -c -o file.o... (cached) yes
checking whether the cc 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... no
checking how to run the C++ preprocessor... g++ -E
checking for ld used by g++... /usr/bin/ld -m elf_x86_64
checking if the linker (/usr/bin/ld -m elf_x86_64) is GNU ld... yes
checking whether the g++ linker (/usr/bin/ld -m elf_x86_64) supports shared libraries... yes
checking for g++ option to produce PIC... -fPIC -DPIC
checking if g++ PIC flag -fPIC -DPIC works... yes
checking if g++ static flag -static works... yes
checking if g++ supports -c -o file.o... yes
checking if g++ supports -c -o file.o... (cached) yes
checking whether the g++ linker (/usr/bin/ld -m elf_x86_64) supports shared libraries... yes
checking dynamic linker characteristics... (cached) GNU/Linux ld.so
checking how to hardcode library paths into programs... immediate
configure: creating ./config.status
config.status: creating config.h
config.status: executing libtool commands
running: make
/bin/bash /tmp/pear/temp/pear-build-rootlo1BwQ/v8js-0.1.3/libtool --mode=compile g++  -I. -I/tmp/pear/temp/v8js -DPHP_ATOM_INC -I/tmp/pear/temp/pear-build-rootlo1BwQ/v8js-0.1.3/include -I/tmp/pear/temp/pear-build-rootlo1BwQ/v8js-0.1.3/main -I/tmp/pear/temp/v8js -I/usr/include/php/20151012 -I/usr/include/php/20151012/main -I/usr/include/php/20151012/TSRM -I/usr/include/php/20151012/Zend -I/usr/include/php/20151012/ext -I/usr/include/php/20151012/ext/date/lib  -DHAVE_CONFIG_H  -g -O2   -c /tmp/pear/temp/v8js/v8js.cc -o v8js.lo
libtool: compile:  g++ -I. -I/tmp/pear/temp/v8js -DPHP_ATOM_INC -I/tmp/pear/temp/pear-build-rootlo1BwQ/v8js-0.1.3/include -I/tmp/pear/temp/pear-build-rootlo1BwQ/v8js-0.1.3/main -I/tmp/pear/temp/v8js -I/usr/include/php/20151012 -I/usr/include/php/20151012/main -I/usr/include/php/20151012/TSRM -I/usr/include/php/20151012/Zend -I/usr/include/php/20151012/ext -I/usr/include/php/20151012/ext/date/lib -DHAVE_CONFIG_H -g -O2 -c /tmp/pear/temp/v8js/v8js.cc  -fPIC -DPIC -o .libs/v8js.o
/tmp/pear/temp/v8js/v8js.cc:32:40: fatal error: ext/standard/php_smart_str.h: No such file or directory
 #include "ext/standard/php_smart_str.h"
                                        ^
compilation terminated.
make: *** [v8js.lo] Error 1
ERROR: `make' failed

最佳答案

我已经找到了解决办法；我们应该检查版本 5.1.99，因为最新的 v8js 构建似乎已损坏。

背景历史

A bug已被 stacie 提升到 v8 团队

Bug “unicode/uchar.h” not found while building V8 #238 also open on Github

A solution log由 tiemevanveen 提供

当前解决方案

命令如下:

如果您还没有安装build-essential:

sudo apt-get install build-essential

如果你还没有安装libicu-dev:

sudo apt-get install libicu-dev
cd /tmp

首先安装 depot_tools(需要源检查)

git clone https://chromium.googlesource.com/chromium/tools/depot_tools.git
export PATH=`pwd`/depot_tools:"$PATH"

下载v8

fetch v8
cd v8

结帐工作版本:

git checkout 5.1.99
gclient sync

使用操作系统libicu

export GYP_DEFINES="use_system_icu=1"

构建(使用内部快照)

export GYPFLAGS="-Dv8_use_external_startup_data=0"

强制gyp使用系统级的ld.gold

export GYPFLAGS="${GYPFLAGS} -Dlinux_use_bundled_gold=0"
make native library=shared snapshot=on -j8

安装到/usr

sudo mkdir -p /usr/lib /usr/include
sudo cp out/native/lib.target/lib*.so /usr/lib/
sudo cp -R include/* /usr/include

...同样适用于V8 < 5.2.51，libv8_libplatform.a="" 内置在tools/gyp="">

echo -e "create /usr/lib/libv8_libplatform.a\naddlib out/native/obj.target/tools/gyp/libv8_libplatform.a\nsave\nend" | sudo ar -M

自行编译php-v8js

cd /tmp
git clone https://github.com/phpv8/v8js.git
cd v8js
phpize
./configure
make
make test
sudo make install

然后将 extension=v8js.so 添加到您的 php.ini 文件中。

Official guide

关于Php:在 ubuntu 上的 laravel homestead(vagrant)上安装 v8js 时出错，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/38036420/