--- configure	2017-02-10 21:25:25.000000000 +0800
+++ ../ffmpeg-3.2.4-patch/configure	2017-02-13 22:39:22.676288196 +0800
@@ -5739,7 +5739,9 @@
 enabled libsnappy         && require snappy snappy-c.h snappy_compress -lsnappy
 enabled libsoxr           && require libsoxr soxr.h soxr_create -lsoxr && LIBSOXR="-lsoxr"
 enabled libssh            && require_pkg_config libssh libssh/sftp.h sftp_init
-enabled libspeex          && require_pkg_config speex speex/speex.h speex_decoder_init -lspeex
+enabled libspeex          && { use_pkg_config speex speex/speex.h speex_decoder_init -lspeex ||
+                                { require libspeex speex/speex.h speex_decoder_init -lspeex &&
+                                 warn "using libspeex without pkg-config"; } }
 enabled libtesseract      && require_pkg_config tesseract tesseract/capi.h TessBaseAPICreate
 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
 enabled libtwolame        && require libtwolame twolame.h twolame_init -ltwolame &&