Merge pull request #1 from kolesa-team/cgo-link

link C library without manually linking and add installation instructions
kolesa-team · Mar 20, 2020 · e21f445 · e21f445
2 parents 49ce674 + 6dae6a3
commit e21f445
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Showing 5 changed files with 13 additions and 4 deletions.
diff --git a/README.md b/README.md
@@ -16,11 +16,16 @@ sudo apt-get install libwebp-dev
 `go get -u github.com/kolesa-team/go-webp`
 
 ## Example 
-#### Before run
+#### Install libwebp library
+For MacOs:
 ```bash
-export CGO_CFLAGS="-I /usr/local/opt/webp/include"
-export CGO_LDFLAGS="-L /usr/local/opt/webp/lib -lwebp"
-export LD_LIBRARY_PATH=/usr/local/opt/webp/lib
+brew update
+brew install webp
+```
+For Ubuntu:
+```bash
+apt update
+apt install libwebp-dev
 ```
 
 #### Decode:

diff --git a/decoder/decoder.go b/decoder/decoder.go
@@ -1,6 +1,7 @@
 package decoder
 
 /*
+#cgo LDFLAGS: -lwebp
 #include <stdlib.h>
 #include <webp/decode.h>
 */

diff --git a/decoder/options.go b/decoder/options.go
@@ -1,6 +1,7 @@
 package decoder
 
 /*
+#cgo LDFLAGS: -lwebp
 #include <webp/decode.h>
 */
 import "C"

diff --git a/encoder/encoder.go b/encoder/encoder.go
@@ -1,6 +1,7 @@
 package encoder
 
 /*
+#cgo LDFLAGS: -lwebp
 #include <stdlib.h>
 #include <webp/encode.h>
 static uint8_t* encodeNRBBA(WebPConfig* config, const uint8_t* rgba, int width, int height, int stride, size_t* output_size) {

diff --git a/encoder/options.go b/encoder/options.go
@@ -1,6 +1,7 @@
 package encoder
 
 /*
+#cgo LDFLAGS: -lwebp
 #include <webp/encode.h>
 */
 import "C"