库名称不以 lib 开头的 Libtool
Libtool with library names that do not start with lib
我正在尝试使用 libtool 将项目转换为 autotools。目标是针对第三方库 link 的共享库。原始 Makefile 方法使用以下命令行：
i686-w64-mingw32-g++ -g -shared -o libmycomponent.dll obj/mycomponent.o -L/path/to/thirdpary -lthirdpary -lwinpthread -lws2_32 -liphlpapi
这个link没问题。
但是，当转换为 autotools/libtool 时，我的 Makefile.am 我有：
libmycomponent_la_LIBADD += -L/path/to/thirdparty -lthirdparty
现在，第三方库名称不是以lib开头。名字只是简单的thirdparty.lib。 linking 时，我得到如下命令行：
/bin/bash ./libtool --tag=CXX --mode=link i686-w64-mingw32-g++ -std=gnu++11 -I./include -g -O2 -shared -no-undefined --enable-runtime-pseudo-reloc -version-info 1:0:0 -L/path/to/thirdparty -o libmycomponent.la -rpath /usr/local/lib src/libmycomponent_la-mycomponent.lo -lthirdcomponent -lwinpthread -liphlpapi -lws2_32
这无法 link 与：
*** Warning: linker path does not have real file for library -lthirdpary.
*** I have the capability to make that library automatically link in when
*** you link to this library. But I can only do this if you have a
*** shared version of the library, which you do not appear to have
*** because I did check the linker path looking for a file starting
*** with libthirdpary but no candidates were found. (...for file magic test)
*** The inter-library dependencies that have been dropped here will be
*** automatically added whenever a program is linked with this library
*** or is declared to -dlopen it.
*** Since this library must not contain undefined symbols,
*** because either the platform does not support them or
*** it was explicitly requested with -no-undefined,
*** libtool will only create a static version of it.
但是，如果我将 thirdparty.lib 复制到 libthirdparty.lib，它 link 没问题。
我怎样才能让 libtool 不改变地使用库名？我尝试直接拉入文件，例如：
libmycomponent_la_LIBADD += /path/to/thirdparty.lib
但我最终得到了未定义的符号（好像它甚至没有尝试拉入文件——这是有道理的，因为它不是 libtool 文件）。
我也试过：
libmycomponent_la_LIBADD += -L/path/to/thirdparty -l:thirdparty
按照建议 here，但消息更改为无法找到 lib:thirdparty.lib。
"The only difference between using an -l option and specifying a file name is that -l surrounds library with ‘lib’ and ‘.a’ and searches several directories"。仅指定文件 thirdparty.lib（不带 -l）
解决方案是通过 libtool 隐藏链接器命令行参数。这是建议here, and fully documented in the libtool FAQ。所以，我调整了我的Makefile.am：
libmycomponent_la_LIBADD += -Wl,-L/path/to/thirdparty -Wl,-lthirdparty
现在链接很愉快。
我正在尝试使用 libtool 将项目转换为 autotools。目标是针对第三方库 link 的共享库。原始 Makefile 方法使用以下命令行：
i686-w64-mingw32-g++ -g -shared -o libmycomponent.dll obj/mycomponent.o -L/path/to/thirdpary -lthirdpary -lwinpthread -lws2_32 -liphlpapi
这个link没问题。
但是，当转换为 autotools/libtool 时，我的 Makefile.am 我有：
libmycomponent_la_LIBADD += -L/path/to/thirdparty -lthirdparty
现在，第三方库名称不是以lib开头。名字只是简单的thirdparty.lib。 linking 时，我得到如下命令行：
/bin/bash ./libtool --tag=CXX --mode=link i686-w64-mingw32-g++ -std=gnu++11 -I./include -g -O2 -shared -no-undefined --enable-runtime-pseudo-reloc -version-info 1:0:0 -L/path/to/thirdparty -o libmycomponent.la -rpath /usr/local/lib src/libmycomponent_la-mycomponent.lo -lthirdcomponent -lwinpthread -liphlpapi -lws2_32
这无法 link 与：
*** Warning: linker path does not have real file for library -lthirdpary.
*** I have the capability to make that library automatically link in when
*** you link to this library. But I can only do this if you have a
*** shared version of the library, which you do not appear to have
*** because I did check the linker path looking for a file starting
*** with libthirdpary but no candidates were found. (...for file magic test)
*** The inter-library dependencies that have been dropped here will be
*** automatically added whenever a program is linked with this library
*** or is declared to -dlopen it.
*** Since this library must not contain undefined symbols,
*** because either the platform does not support them or
*** it was explicitly requested with -no-undefined,
*** libtool will only create a static version of it.
但是，如果我将 thirdparty.lib 复制到 libthirdparty.lib，它 link 没问题。
我怎样才能让 libtool 不改变地使用库名？我尝试直接拉入文件，例如：
libmycomponent_la_LIBADD += /path/to/thirdparty.lib
但我最终得到了未定义的符号（好像它甚至没有尝试拉入文件——这是有道理的，因为它不是 libtool 文件）。
我也试过：
libmycomponent_la_LIBADD += -L/path/to/thirdparty -l:thirdparty
按照建议 here，但消息更改为无法找到 lib:thirdparty.lib。
"The only difference between using an -l option and specifying a file name is that -l surrounds library with ‘lib’ and ‘.a’ and searches several directories"。仅指定文件 thirdparty.lib（不带 -l）
解决方案是通过 libtool 隐藏链接器命令行参数。这是建议here, and fully documented in the libtool FAQ。所以，我调整了我的Makefile.am：
libmycomponent_la_LIBADD += -Wl,-L/path/to/thirdparty -Wl,-lthirdparty
现在链接很愉快。