mapi: Use correct shared libraries suffix on macOS.

Signed-off-by: Vinson Lee <vlee@freedesktop.org>
Reviewed-by: Dylan Baker <dylan@pnwbakers.com>
Reviewed-by: Eric Engestrom <eric.engestrom@imgtec.com>

src/mapi/es1api/ABI-check

@@ -9,7 +9,12 @@ set -eu
 # or in extensions that are part of the ES 1.1 extension pack.
 # (see http://www.khronos.org/registry/gles/specs/1.1/opengles_spec_1_1_extension_pack.pdf)
 
-LIB=${1-es1api/.libs/libGLESv1_CM.so.1}
+if [ $(uname) == "Darwin" ]
+then
+  LIB=${1-es1api/.libs/libGLESv1_CM.dylib}
+else
+  LIB=${1-es1api/.libs/libGLESv1_CM.so.1}
+fi
 
 if ! [ -f "$LIB" ]
 then

src/mapi/es2api/ABI-check

@@ -6,7 +6,12 @@ set -eu
 # GL_EXT_multi_draw_arrays
 # GL_OES_EGL_image
 
-LIB=${1-es2api/.libs/libGLESv2.so.2}
+if [ $(uname) == "Darwin" ]
+then
+  LIB=${1-es2api/.libs/libGLESv2.dylib}
+else
+  LIB=${1-es2api/.libs/libGLESv2.so.2}
+fi
 
 if ! [ -f "$LIB" ]
 then