我已启动并运行cygwin（编译并运行示例代码。没问题）。
我在这里下载了boost：
C:\cygwin\lib\boost_1_53_0
并运行bootstrap.sh（运行没问题）。
我跑了：
$ ./b2 install --prefix=../boost
当我在./lib/boost_1_53_0时假设它会安装到./lib
现在确实我有：
C:\cygwin\lib\boost
我正在尝试编译并运行：
#include<iostream>
#include<boost/any.hpp>
int main()
{
boost::any a(5);
a = 7.67;
std::cout<<boost::any_cast<double>(a)<<std::endl;
}
位于./home/usr/，我明白了：
Jason@ITHAKA-DB44CFE1 /home/jason
$ g++ -o first first.cpp
first.cpp:2:24: boost/any.hpp: No such file or directory
first.cpp: In function `int main()':
first.cpp:6: error: `boost' has not been declared
first.cpp:6: error: `any' undeclared (first use this function)
first.cpp:6: error: (Each undeclared identifier is reported only once for each function it appears in.)
first.cpp:6: error: expected `;' before "a"
first.cpp:7: error: `a' undeclared (first use this function)
first.cpp:8: error: `boost' has not been declared
first.cpp:8: error: `any_cast' undeclared (first use this function)
first.cpp:8: error: expected primary-expression before "double"
first.cpp:8: error: expected `;' before "double"
first.cpp:9:2: warning: no newline at end of file
Jason@ITHAKA-DB44CFE1 /home/jason
$
我尽可能多地提供解决此问题的详细信息，但我不确定为什么会这样。应该在其他地方加强--prefix吗？
any.hpp的路径是：C:\cygwin\lib\boost\include\boost\any.hpp
$ g++ -v -o first first.cpp的结果是：
Jason@ITHAKA-DB44CFE1 /home/jason
$ g++ -v -o first first.cpp
Reading specs from /usr/lib/gcc/i686-pc-cygwin/3.4.4/specs
Configured with: /managed/gcc-build/final-v3-bootstrap/gcc-3.4.4-999/configure --verbose --program-suffix=-3 --prefix=/usr --exec-prefix=/usr --sysconfdir=/etc --libdir=/usr/lib --libexecdir=/usr/lib --mandir=/usr/share/man --infodir=/usr/share/info --enable-languages=c,ada,c++,d,f77,pascal,java,objc --enable-nls --without-included-gettext --enable-version-specific-runtime-libs --without-x --enable-libgcj --disable-java-awt --with-system-zlib --enable-interpreter --disable-libgcj-debug --enable-threads=posix --enable-java-gc=boehm --disable-win32-registry --enable-sjlj-exceptions --enable-hash-synchronization --enable-libstdcxx-debug
Thread model: posix
gcc version 3.4.4 (cygming special, gdc 0.12, using dmd 0.125)
/usr/lib/gcc/i686-pc-cygwin/3.4.4/cc1plus.exe -quiet -v -D__CYGWIN32__ -D__CYGWIN__ -Dunix -D__unix__ -D__unix -idirafter /usr/lib/gcc/i686-pc-cygwin/3.4.4/../../../../include/w32api -idirafter /usr/lib/gcc/i686-pc-cygwin/3.4.4/../../../../i686-pc-cygwin/lib/../../include/w32api first.cpp -quiet -dumpbase first.cpp -mtune=pentiumpro -auxbase first -version -o /tmp/ccNdgnCA.s
ignoring nonexistent directory "/usr/local/include"
ignoring nonexistent directory "/usr/lib/gcc/i686-pc-cygwin/3.4.4/../../../../i686-pc-cygwin/include"
ignoring duplicate directory "/usr/lib/gcc/i686-pc-cygwin/3.4.4/../../../../i686-pc-cygwin/lib/../../include/w32api"
#include "..." search starts here:
#include <...> search starts here:
/usr/lib/gcc/i686-pc-cygwin/3.4.4/include/c++
/usr/lib/gcc/i686-pc-cygwin/3.4.4/include/c++/i686-pc-cygwin
/usr/lib/gcc/i686-pc-cygwin/3.4.4/include/c++/backward
/usr/lib/gcc/i686-pc-cygwin/3.4.4/include
/usr/include
/usr/lib/gcc/i686-pc-cygwin/3.4.4/../../../../include/w32api
End of search list.
GNU C++ version 3.4.4 (cygming special, gdc 0.12, using dmd 0.125) (i686-pc-cygwin)
compiled by GNU C version 3.4.4 (cygming special, gdc 0.12, using dmd 0.125).
GGC heuristics: --param ggc-min-expand=100 --param ggc-min-heapsize=131072
first.cpp:7:2: warning: no newline at end of file
/usr/lib/gcc/i686-pc-cygwin/3.4.4/../../../../i686-pc-cygwin/bin/as.exe -o /tmp/ccCB9HBt.o /tmp/ccNdgnCA.s
/usr/lib/gcc/i686-pc-cygwin/3.4.4/collect2.exe -Bdynamic --dll-search-prefix=cyg -o first.exe /usr/lib/gcc/i686-pc-cygwin/3.4.4/../../../crt0.o -L/usr/lib/gcc/i686-pc-cygwin/3.4.4 -L/usr/lib/gcc/i686-pc-cygwin/3.4.4 -L/usr/lib/gcc/i686-pc-cygwin/3.4.4/../../.. /tmp/ccCB9HBt.o -lstdc++ -lgcc -lcygwin -luser32 -lkernel32 -ladvapi32 -lshell32 -lgcc