remove pkg-config dependency

docs/COMPILE-NIX.md

@@ -5,15 +5,6 @@ To compile for Microsoft Windows, see [COMPILE-WINDOWS.md](COMPILE-WINDOWS.md)
 
 ----
 
-
-[0] Dependencies
-
-For MacOS, Unicorn requires "pkg-config" package.
-Brew users can install this with:
-
-        $ brew install pkg-config
-
-
 [1] Tailor Unicorn to your need.
 
 Out of 6 archtitectures supported by Unicorn (Arm, Arm64, M68K, Mips, Sparc,

docs/COMPILE-WINDOWS.md

@@ -33,22 +33,20 @@ Unicorn can be compiled either on Ubuntu or Windows.
 
           $ pacman -S python2
           $ pacman -S make
-          $ pacman -S pkg-config
           $ pacman -S mingw-w64-i686-toolchain
 
   - To compile for Windows 64-bit, run:
 
           $ pacman -S python2
           $ pacman -S make
-          $ pacman -S pkg-config
           $ pacman -S mingw-w64-x86_64-toolchain
 
-- For Cygwin, "make", "gcc-core", "pkg-config", "libpcre-devel", "zlib-devel"
+- For Cygwin, "make", "gcc-core", "libpcre-devel", "zlib-devel"
   are needed.
 
   If apt-cyg is available, you can install these with:
 
-        $ apt-cyg install make gcc-core pkg-config libpcre-devel zlib-devel
+        $ apt-cyg install make gcc-core libpcre-devel zlib-devel
 
 
 

qemu/configure

@@ -268,11 +268,6 @@ libtool="${LIBTOOL-${cross_prefix}libtool}"
 nm="${NM-${cross_prefix}nm}"
 strip="${STRIP-${cross_prefix}strip}"
 windres="${WINDRES-${cross_prefix}windres}"
-pkg_config_exe="${PKG_CONFIG-${cross_prefix}pkg-config}"
-query_pkg_config() {
-    "${pkg_config_exe}" ${QEMU_PKG_CONFIG_FLAGS} "$@"
-}
-pkg_config=query_pkg_config
 
 # If the user hasn't specified ARFLAGS, default to 'rv', just as make does.
 ARFLAGS="${ARFLAGS-rv}"
@@ -595,7 +590,6 @@ for opt do
   --static)
     static="yes"
     LDFLAGS="-static $LDFLAGS"
-    QEMU_PKG_CONFIG_FLAGS="--static $QEMU_PKG_CONFIG_FLAGS"
   ;;
   --mandir=*) mandir="$optarg"
   ;;
@@ -1065,13 +1059,6 @@ else
     echo big/little test failed
 fi
 
-##########################################
-# pkg-config probe
-
-if ! has "$pkg_config_exe"; then
-  error_exit "pkg-config binary '$pkg_config_exe' not found"
-fi
-
 ##########################################
 # libtool probe