Brotli: fix build after recent changes in libbrotli.

Headers are now in <brotli/...> and not <brotli/enc/...>.

Change-Id: Ia5d9bcb89e8d09daaaabc319333f6868421fc7f0
Signed-off-by: Piotr Sikora <piotrsikora@google.com>

config

@@ -57,9 +57,11 @@ fi
 # filter module (depends on Brotli library)
 #
 
+# <brotli/encode.h>
+
 ngx_feature_name=
 ngx_feature_run=no
-ngx_feature_incs="#include <brotli/enc/encode.h>"
+ngx_feature_incs="#include <brotli/encode.h>"
 ngx_feature_test="BrotliEncoderCreateInstance(NULL, NULL, NULL)"
 
 # auto-discovery
@@ -104,6 +106,57 @@ if [ $ngx_found = no ]; then
     . auto/feature
 fi
 
+# <brotli/enc/encode.h>
+
+if [ $ngx_found = no ]; then
+    ngx_feature_name=NGX_HAVE_BROTLI_ENC_ENCODE_H
+    ngx_feature_run=no
+    ngx_feature_incs="#include <brotli/enc/encode.h>"
+    ngx_feature_test="BrotliEncoderCreateInstance(NULL, NULL, NULL)"
+
+    # auto-discovery
+    ngx_feature="Brotli library"
+    ngx_feature_path=
+    ngx_feature_libs="-lbrotlienc -lm"
+    . auto/feature
+fi
+
+if [ $ngx_found = no ]; then
+    # FreeBSD, OpenBSD
+    ngx_feature="Brotli library in /usr/local/"
+    ngx_feature_path="/usr/local/include"
+    if [ $NGX_RPATH = YES ]; then
+        ngx_feature_libs="-R/usr/local/lib -L/usr/local/lib -lbrotlienc -lm"
+    else
+        ngx_feature_libs="-L/usr/local/lib -lbrotlienc -lm"
+    fi
+    . auto/feature
+fi
+
+if [ $ngx_found = no ]; then
+    # NetBSD
+    ngx_feature="Brotli library in /usr/pkg/"
+    ngx_feature_path="/usr/pkg/include"
+    if [ $NGX_RPATH = YES ]; then
+        ngx_feature_libs="-R/usr/pkg/lib -L/usr/pkg/lib -lbrotlienc -lm"
+    else
+        ngx_feature_libs="-L/usr/pkg/lib -lbrotlienc -lm"
+    fi
+    . auto/feature
+fi
+
+if [ $ngx_found = no ]; then
+    # MacPorts
+    ngx_feature="Brotli library in /opt/local/"
+    ngx_feature_path="/opt/local/include"
+    if [ $NGX_RPATH = YES ]; then
+        ngx_feature_libs="-R/opt/local/lib -L/opt/local/lib -lbrotlienc -lm"
+    else
+        ngx_feature_libs="-L/opt/local/lib -lbrotlienc -lm"
+    fi
+    . auto/feature
+fi
+
 if [ $ngx_found = no ]; then
     echo "$0: error: ngx_brotli filter module requires Brotli library."
     exit 1

src/ngx_http_brotli_filter_module.c

@@ -10,7 +10,11 @@
 #include <ngx_core.h>
 #include <ngx_http.h>
 
+#if (NGX_HAVE_BROTLI_ENC_ENCODE_H)
 #include <brotli/enc/encode.h>
+#else
+#include <brotli/encode.h>
+#endif
 
 
 typedef struct {