title: configure: error: Missing required libcurl
body: <p>I'm Trying to Compile a project that's need <code>curllib</code> on windows xp 32-bit</p>
  
  <p>i've downloaded "<code>curl-7.35.0.tar.gz</code>" and compiled it, copied "<code>libcurl.m4</code>" and "<code>curl-config</code>" </p>
  
  <p>when i run this command in MSYS Shell:</p>
  
  <pre><code>LIBCURL="-lcurldll" ./configure CFLAGS="-O3"
  </code></pre>
  
  <p>It Gives me this Error: </p>
  
  <pre><code>configure: error: Missing required libcurl &gt;= 7.15.2
  </code></pre>
  
  <p>i know that i hadn't installed the curl lib properly in my system that's why this error shows up</p>
  
  <p>can someone tell me the right way to install libcurl in windows ? ( Note: I'm a newbie with C/C++ and compiling and all related things )</p>
  
  <p>Thanks in advance !</p>
  
  <p>configure script results:</p>
  
  <pre><code>checking build system type... i686-pc-mingw32
  checking host system type... i686-w64-mingw32
  checking target system type... i686-w64-mingw32
  checking for a BSD-compatible install... /bin/install -c
  checking whether build environment is sane... yes
  checking for i686-w64-mingw32-strip... no
  checking for strip... strip
  checking for a thread-safe mkdir -p... /bin/mkdir -p
  checking for gawk... gawk
  checking whether make sets $(MAKE)... yes
  checking whether to enable maintainer-specific portions of Makefiles... no
  checking for style of include used by make... GNU
  checking for i686-w64-mingw32-gcc... no
  checking for gcc... gcc
  checking whether the C compiler works... yes
  checking for C compiler default output file name... a.exe
  checking for suffix of executables... .exe
  checking whether we are cross compiling... no
  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 gcc option to accept ISO C99... -std=gnu99
  checking how to run the C preprocessor... gcc -std=gnu99 -E
  checking for grep that handles long lines and -e... /bin/grep
  checking for egrep... /bin/grep -E
  checking whether gcc -std=gnu99 needs -traditional... no
  checking whether gcc -std=gnu99 and cc understand -c and -o together... yes
  checking dependency style of gcc -std=gnu99... gcc3
  checking for i686-w64-mingw32-ranlib... no
  checking for ranlib... ranlib
  checking for ANSI C header files... yes
  checking for sys/types.h... yes
  checking for sys/stat.h... yes
  checking for stdlib.h... yes
  checking for string.h... yes
  checking for memory.h... yes
  checking for strings.h... yes
  checking for inttypes.h... yes
  checking for stdint.h... yes
  checking for unistd.h... yes
  checking sys/endian.h usability... no
  checking sys/endian.h presence... no
  checking for sys/endian.h... no
  checking sys/param.h usability... yes
  checking sys/param.h presence... yes
  checking for sys/param.h... yes
  checking syslog.h usability... no
  checking syslog.h presence... no
  checking for syslog.h... no
  checking for sys/sysctl.h... no
  checking whether be32dec is declared... no
  checking whether le32dec is declared... no
  checking whether be32enc is declared... no
  checking whether le32enc is declared... no
  checking for size_t... yes
  checking for working alloca.h... no
  checking for alloca... yes
  checking for getopt_long... yes
  checking whether we can compile AVX code... yes
  checking whether we can compile XOP code... yes
  checking whether we can compile AVX2 code... yes
  checking for json_loads in -ljansson... no
  checking for pthread_create in -lpthread... no
  checking for pthread_create in -lpthreadGC2... no
  checking for pthread_create in -lpthreadGC1... no
  checking for pthread_create in -lpthreadGC... no
  checking for gawk... (cached) gawk
  checking for curl-config... /mingw/bin/curl-config
  checking for the version of libcurl... 7.35.0
  checking for libcurl &gt;= version 7.15.2... yes
  checking whether libcurl is usable... no
  configure: error: Missing required libcurl &gt;= 7.15.2
  </code></pre>