我已经下载了 PHP 5.4.0 源代码，将其解压缩并移到源文件夹中。
我做了一个配置：
./configure --build=x86_64-unknown-linux-gnu --host=arm-linux-uclibcgnueabi --prefix=/usr/arm/www CC="arm-linux-uclibcgnueabi-gcc --sysroot=/toolchains/gnu_cortex-a9_tools/" --disable-libxml --disable-dom --without-iconv --without-openssl --disable-simplexml --disable-xml --disable-xmlreader --disable-xmlwriter --without-pear --without-sqlite3 --disable-pdo --without-pdo-sqlite --disable-phar --with-config-file-path=/etc/
其次是
make
没有错误，一切运行良好。接下来我进行make安装。
make install
再次一切正常。我将它移动到目标平台并运行
/usr/arm/www/bin/php -v
PHP 5.4.0 (cli) (built: Aug 15 2012 16:07:41)
Copyright (c) 1997-2012 The PHP Group
Zend Engine v2.4.0, Copyright (c) 1998-2012 Zend Technologies
我用我的网络服务器直接用 php 测试了一个简单的主页。
<?php echo "hello" ?>
# php index.php
hello
它按预期工作。接下来我测试：
<?php
$output = shell_exec('ls -lart');
echo "<pre>$output</pre>";
?>
哦不~
# php shell.php
Segmentation fault
我测试了另一个脚本：
#!/bin/php
<?php
echo "hello";
$handle = fopen("info.txt", "r");
echo $handle;
?>
结果相同：
# php index.php
helloSegmentation fault
我有 php.ini 吗？
# /usr/arm/www/bin/php --ini
Configuration File (php.ini) Path: /etc/
Loaded Configuration File: /etc/php.ini
是的，并且没有禁用的功能。测试 strace /usr/arm/www/bin/php index.php
lstat("/srv/www/info.txt", {st_mode=S_IFREG|0644, st_size=20, ...}) = 0
open("/srv/www/info.txt", O_RDONLY) = 3
fstat(3, {st_mode=S_IFREG|0644, st_size=20, ...}) = 0
lseek(3, 10, SEEK_CUR) = 0
--- SIGSEGV (Segmentation fault) @ 0 (0) ---
+++ killed by SIGSEGV +++
文件 info.txt 存在并且它有读/写的权限。
测试 strace /usr/arm/www/bin/php shell.php
fcntl64(3, F_GETFL) = 0 (flags O_RDONLY)
ioctl(3, SNDCTL_TMR_TIMEBASE or TCGETS, 0x7e31fddc) = -1 EINVAL (Invalid argument)
vfork() = 3324
close(4) = 0
fstat(3, {st_mode=S_IFIFO|0600, st_size=0, ...}) = 0
read(3, "total 24\n-rw-rw-r-- 1 1001 "..., 8192) = 468
read(3, ""..., 8192) = 0
--- SIGCHLD (Child exited) @ 0 (0) ---
close(3) = 0
wait4(3324, [{WIFEXITED(s) && WEXITSTATUS(s) == 0}], 0, NULL) = 3324
--- SIGSEGV (Segmentation fault) @ 0 (0) ---
+++ killed by SIGSEGV +++
如果我通过 gdb 运行 index.php，它会给我：
Starting program: /usr/arm/www/bin/php index.php
hello
Program received signal SIGSEGV, Segmentation fault.
zend_do_fcall_common_helper_SPEC (execute_data=0x2ac7a040) at /home/maiden/Downloads/php-5.4.0/Zend/zend.h:391
391 /home/maiden/Downloads/php-5.4.0/Zend/zend.h: No such file or directory.
in /home/maiden/Downloads/php-5.4.0/Zend/zend.h
gdb 从 shell.php 给我这个 启动程序：/usr/arm/www/bin/php shell.php
Program received signal SIGSEGV, Segmentation fault.
zend_do_fcall_common_helper_SPEC (execute_data=0x2ab76040) at /home/maiden/Downloads/php-5.4.0/Zend/zend.h:391
391 in /home/maiden/Downloads/php-5.4.0/Zend/zend.h
zend.h 位于 /usr/arm/www/include/php/Zend/ 显然在交叉编译期间出现了问题。我错过了什么？我没有找到任何配置标志来更正此问题，并且创建指向所需位置的符号链接会删除 gdb 输出，但 php 仍然存在段错误。
谢谢你的帮助！
更新：
# valgrind php test.php
==2181== Memcheck, a memory error detector
==2181== Copyright (C) 2002-2012, and GNU GPL'd, by Julian Seward et al.
==2181== Using Valgrind-3.8.0 and LibVEX; rerun with -h for copyright info
==2181== Command: php test.php
==2181==
==2181== Conditional jump or move depends on uninitialised value(s)
==2181== at 0x4004EC8: ??? (in /lib/ld-uClibc-0.9.30-nptl.so)
==2181==
==2181== Invalid read of size 4
==2181== at 0x4004D48: _dl_get_ready_to_run (in /lib/ld-uClibc-0.9.30-nptl.so)
==2181== Address 0x7d4cc304 is just below the stack ptr. To suppress, use: --workaround-gcc296-bugs=yes
==2181==
==2181== Invalid read of size 4
==2181== at 0x48C348C: __uClibc_main (in /lib/libuClibc-0.9.30-nptl.so)
==2181== Address 0x7d4cc554 is just below the stack ptr. To suppress, use: --workaround-gcc296-bugs=yes
==2181==
==2181== Invalid write of size 4
==2181== at 0x233010: __eqdf2 (ieee754-df.S:1120)
==2181== Address 0x7d4cb0bc is just below the stack ptr. To suppress, use: --workaround-gcc296-bugs=yes
==2181==
Warning: shell_exec(): Unable to execute 'ls -lart' in /test.php on line 3
==2181== Invalid read of size 4
==2181== at 0x1FF1AC: zend_do_fcall_common_helper_SPEC (zend.h:391)
==2181== by 0x1F3D17: execute (zend_vm_execute.h:410)
==2181== by 0x18B217: zend_execute_scripts (zend.c:1279)
==2181== by 0x1365BB: php_execute_script (main.c:2473)
==2181== by 0x22B52B: do_cli (php_cli.c:988)
==2181== by 0x22BD4B: main (php_cli.c:1364)
==2181== Address 0x8 is not stack'd, malloc'd or (recently) free'd
==2181==
Segmentation fault
更新2
使用 memcheck 重新运行 valgrind，得到的输出与以前大致相同，但这是新的：
php: can't resolve symbol '__libc_freeres'
更新3
虽然 valgrind 让我失望了，但我继续使用 gdb，我在目标系统上创建了文件夹 /home/maiden/..etc 并复制了我的 php/include 文件夹的内容并重新运行 gdb。现在我收到此错误消息：
(gdb) run index.php
Starting program: /bin/php index.php
hello
Program received signal SIGSEGV, Segmentation fault.
zend_do_fcall_common_helper_SPEC (execute_data=0x2ab34040) at /home/maiden/Downloads/php-5.4.5/Zend/zend.h:391
warning: Source file is more recent than executable.
391 return --pz->refcount__gc;
这与 Sixeightzero 昨天在评论中所写的非常相似。我现在已经尝试过 PHP 版本 5.3.5、5.4.0、5.4.5 全部相同的错误。
该主题已关闭！:( 继续：https ://serverfault.com/questions/418521/cross-compile-php [已关闭] 现在开始：使用 UCLIBC 交叉编译 PHP