我在autoconf-archive 宏的支持下使用 autoconf 来检测 boost 库，它们可以在系统范围的 boost 库中正常工作，但是如果我在我的主目录中手动编译 boost 则会失败：
sb@stephane:~/devel/spectra2$ ./configure --with-boost=/home/sb/local/
checking for a BSD-compatible install... /usr/bin/install -c
checking whether build environment is sane... yes
checking for a thread-safe mkdir -p... /bin/mkdir -p
checking for gawk... no
checking for mawk... mawk
checking whether make sets $(MAKE)... yes
checking build system type... i686-pc-linux-gnu
checking host system type... i686-pc-linux-gnu
checking for style of include used by make... GNU
checking for gcc... gcc
checking for C compiler default output file name... a.out
checking whether the C compiler works... yes
checking whether we are cross compiling... no
checking for suffix of executables...
checking for suffix of object files... o
checking whether we are using the GNU C compiler... yes
checking whether gcc accepts -g... yes
checking for gcc option to accept ISO C89... none needed
checking dependency style of gcc... gcc3
checking for library containing strerror... none required
checking for g++... g++
checking whether we are using the GNU C++ compiler... yes
checking whether g++ accepts -g... yes
checking dependency style of g++... gcc3
checking for boostlib >= 1.31.0... yes
checking whether the Boost::Program_Options library is available... yes
checking for exit in -lboost_program_options... yes
checking whether the Boost::Filesystem library is available... yes
checking for exit in -lboost_filesystem... no
checking for exit in -lboost_filesystem... (cached) no
checking for exit in -lboost_filesystem... (cached) no
configure: error: Could not link against boost_filesystem !
如您所见，它检测到一些库很好，但是由于 boost-filesystem 失败。这些是 ~/local/lib 的内容：
sb@stephane:~$ ls -1 /home/sb/local/lib/
libboost_filesystem.a
libboost_filesystem.so
libboost_filesystem.so.1.42.0
libboost_program_options.a
libboost_program_options.so
libboost_program_options.so.1.42.0
libboost_system.a
libboost_system.so
libboost_system.so.1.42.0
libboost_thread.a
libboost_thread.so
libboost_thread.so.1.42.0
所以图书馆就在那里。我尝试了 boost-1.39 和 boost-1.42 都没有不同的结果，知道为什么会这样吗？我是不是忘记了什么？