https://bugs.gentoo.org/647626

--- a/src/gle/gle-poppler.cpp
+++ b/src/gle/gle-poppler.cpp
@@ -194,7 +194,7 @@
 boolean gle_jpeg_empty_output_buffer(j_compress_ptr cinfo) {
 	gle_jpeg_term_destination(cinfo);
 	gle_jpeg_init_destination(cinfo);
-	return true;
+	return TRUE;
 }
 
 void gle_jpeg_memory_dest(j_compress_ptr cinfo, JOCTET* buffer, GLEWriteFuncAndClosure writeCallback) {
@@ -237,7 +237,7 @@
     	cinfo.in_color_space = JCS_RGB;
     }
     jpeg_set_defaults(&cinfo);
-    jpeg_start_compress(&cinfo, true);
+    jpeg_start_compress(&cinfo, TRUE);
     JSAMPROW row = new JSAMPLE[cinfo.input_components * width];
     JSAMPROW row_pointer[1];
     row_pointer[0] = row;