Question

我正在尝试在Mac OS 10.6上编译一个名为xtree的PHP扩展，但是我遇到了一些关于丢失符号的错误。我已经能够在运行Debian 4的机器上成功编译它而没有丢失的符号错误。

makefile显示为：

LIBTOOL = /usr/bin/libtool
INSTALL = /usr/bin/install

PHPINC := $(shell /opt/local/bin/php-config --includes)
PHPLIBS := $(shell /opt/local/bin/php-config --libs)
PHPDEST := $(shell /opt/local/bin/php-config --extension-dir)

XTREE_LIB = xtree2.so
OBJS = xtree.lo tree.lo node.lo parser.lo string.lo token.lo xsock.lo xpath.lo buffer.lo

.SUFFIXES : .lo .c

all : ${XTREE_LIB}

clean :
    rm -f *.o
    rm -f *.lo
    rm -f *.so

.c.lo :
    gcc -fpic -DHAVE_XTREE -DPIC -DCOMPILE_DL_XTREE ${PHPINC} -c -o $@ $<

${XTREE_LIB} : ${OBJS}
    gcc -shared -L/usr/local/lib -rdynamic -o ${XTREE_LIB} ${OBJS}

install : ${XTREE_LIB}
    $(INSTALL) -c ${XTREE_LIB} ${PHPDEST}/${XTREE_LIB}

以下是我在Mac上进行编译时收到的错误示例。

Undefined symbols:
  "__php_stream_open_wrapper_ex", referenced from:
      _tree_load_xdf in tree.lo
      _tree_save_xdf in tree.lo
      _tree_cache_control in tree.lo
      _get_cache_header in tree.lo
      _log_cache_hits in tree.lo
      _log_cache_hits in tree.lo
      _log_cache_err in tree.lo
      _buf_load_file in buffer.lo
      _buf_save_file in buffer.lo
  "_php_info_print_table_start", referenced from:
      _zm_info_xtree in xtree.lo
  "_zend_list_insert", referenced from:
      _zif_xtree_load in xtree.lo
      _zif_xtree_xchg in xtree.lo
      _zif_xtree_new in xtree.lo

PHP安装在localhost上正确运行，php-config指向包含，libs，extension-dir等的正确位置。

与我的一些同事交谈，他们建议链接器没有正确地指向库。但是，他不熟悉Mac OS链接器，知道如何解决这个问题。

有什么想法吗？

更新

我也有以下建议，但没有运气：

Anyways, here's a few random things you could try:

- In the linker line of the Makefile (starts with "gcc -shared"), add
the "-dynamiclib" parameter after "gcc".  You may also need to remove
the "-shared" and/or "-rdynamic" parameters.

- In the linker line, add "-bundle -flat_namespace -undefined
suppress".  Again, you may need to dump "-shared" and/or "-rdynamic".

仍在寻求帮助。谢谢！

Answer 1

尝试更改：

${XTREE_LIB} : ${OBJS}
    gcc -shared -L/usr/local/lib -rdynamic -o ${XTREE_LIB} ${OBJS}

到此：

${XTREE_LIB} : ${OBJS}
    gcc -shared -L/usr/local/lib -rdynamic -o ${XTREE_LIB} ${OBJS} $(PHPLIBS)

PHP扩展无法在Mac OS 10.6上编译

1 个答案: