eclipse - Windows C++ __imp reference error when building -

environment:

• windows server 2012 r2
• eclipse luna
• cygwin
• mingw

i building c++ program queries against active directory using ldap (similar msdn page). have following code sample program:

#include<iostream> #include<windows.h> #include<winldap.h>  using namespace std;  int main() {      string ldapserverurl = "192.168.10.29";     int ldapserverport = 389;      ldap* ldapsession = ldap_init(&ldapserverurl[0], ldapserverport);      return 0;  } 

when try build sample mingw toolchain in eclipse, build fails , line ldap_init() underlined in red. when hover mouse on error, says "undefined reference _imp__ldap_inita()." when try cygwin toolchain, yields similar error (with different underscore arrangement).

when try compile via cmd (cd directory g++ main.cpp, cygwin in path), error:

/cygdrive/c/users/someuser/appdata/local/temp/cczczwy3.o:main.cpp:(.text+0x68): undefined reference `__imp_ldap_init' /cygdrive/c/users/someuser/appdata/local/temp/cczczwy3.o:main.cpp:(.text+0x68): relocation truncated fit: r_x86_64_pc32 against undefined symbol `__imp_ldap_init' collect2: error: ld returned 1 exit status 

i've read __imp_ prefix being related linking (this stuff bit on head, i'm android developer). 1 term came across declspec. took @ winldap.h , has following (relevant?) code:

#ifndef winldapapi #define winldapapi declspec_import #endif 

but there, have no idea go. how compile?

it turns out did not have windows sdk installed. first thing had download , install it.

then, in eclipse, had make changes project configuration.

first, had add windows sdk paths , symbols include directories (right click project -> properties -> c/c++ general -> paths , symbols -> gnu c++ -> add...). in case, directory had add c:\program files (x86)\windows kits\8.1\lib\winv6.3\um\x64.

next, had add windows ldap library cygwin c++ linker library configuration (right-click project -> properties -> c/c++ build -> settings -> cygwin c++ linker -> libraries). under "libraries (-l)," add wldap32.lib (case sensitive!).

now builds , runs!