为什么不Win32::ODBC找到的ODBC.dll 在Perl5.10和Cygwin?

Question

我试图使用Perl ODBC连接到Microsoft SQL服务器。我的问题是，Perl5.10.0是具有一个问题，使用的Win32ODBC driver.

如果我运行Perl壳和执行这一行，我得到了错误。

use Win32::ODBC;

Can't load '/usr/lib/perl5/vendor_perl/5.10/i686-cygwin/auto/Win32/ODBC/ODBC.dll'
for module Win32::ODBC: No such file or directory at
/usr/lib/perl5/5.10/i686-cygwin/DynaLoader.pm line 201.

我已经验证了dll的文件不存在。

我已经安装的Cygwin包：

• perl(5.10.0-5)
• perl-libwin32(0.28-2)

Answer 1

这似乎是一个 已知的问题.抓住 libiodbc源, ，适用以下修补、建造和安装：

diff -ub  libiodbc-3.52.6/include/iodbcunix.h.orig
--- libiodbc-3.52.6/include/iodbcunix.h.orig        2006-01-26 09:50:59.000000000 +0000
+++ libiodbc-3.52.6/include/iodbcunix.h     2007-12-24 19:33:57.859375000 +0000
@@ -124,6 +124,7 @@
 #if defined (OBSOLETE_WINDOWS_TYPES)
 typedef unsigned char              BYTE;
 #endif
+#ifndef WIN32
 typedef unsigned short             WORD;
 typedef unsigned int               DWORD;
 typedef char *                     LPSTR;
@@ -131,6 +132,7 @@         
 typedef wchar_t *          LPWSTR; 
 typedef const wchar_t *            LPCWSTR;
 typedef DWORD *                    LPDWORD;
+#endif

 #if !defined(BOOL) && !defined(_OBJC_OBJC_H_)
 typedef int                        BOOL;

---

更新： Cygwin伙计 有一个TODO于这个问题, 但这是几个月。在情况下的等待时间太长，可以假它在此期间:

#! /bin/bash

# run from the libiodbc build directory

gcc -shared -o cygiodbc-2.dll \
    -Wl,--out-implib=libcygiodbc-2.dll.a \
    -Wl,--export-all-symbols \
    -Wl,--enable-auto-import \
    -Wl,--whole-archive iodbc/.libs/libiodbc.a \
    -Wl,--no-whole-archive

gcc -shared -o cygiodbcinst-2.dll \
    -Wl,--out-implib=libcygiodbcinst-2.dll.a \
    -Wl,--export-all-symbols \
    -Wl,--enable-auto-import \
    -Wl,--whole-archive iodbcinst/.libs/libiodbcinst.a \
    -Wl,--no-whole-archive

cp cygiodbc{,inst}-2.dll /bin

Answer 2

我已经验证了dll的文件不存在。

你的意思是 /usr/lib/perl5/vendor_perl/5.10/i686-cygwin/auto/Win32/ODBC/ODBC.dll 存在？如果是这样，你有读取和执行的许可？

有一种意见就上述/usr/lib/perl5/5.10/i686-cygwin/DynaLoader.下午线201:

# Many dynamic extension loading problems will appear to come from
# this section of code: XYZ failed at line 123 of DynaLoader.pm.
# Often these errors are actually occurring in the initialisation
# C code of the extension XS file. Perl reports the error as being
# in this perl code simply because this was the last perl code
# it executed.

因此它似乎事情是错误的安装。你可以试试重新安装Win32::ODBC：

$ cpan Win32::ODBC