Fix gsview work with ghostscript-9.53

app-text/gsview/files/gsview-4.9-rev.patch

@@ -0,0 +1,12 @@
+diff -urNd gsview-4.9/src/gvcver.h gsview-4.9-rev/src/gvcver.h
+--- gsview-4.9/src/gvcver.h	2007-11-18 11:13:24.000000000 +1000
++++ gsview-4.9-rev/src/gvcver.h	2020-09-30 13:11:08.897457314 +1000
+@@ -58,7 +58,7 @@
+ #define GS_PRODUCT  "AFPL Ghostscript"
+ #define GS_REVISION_MIN   704
+ #define GS_REVISION	  704
+-#define GS_REVISION_MAX   999
++#define GS_REVISION_MAX   9999
+ 
+ #ifdef _Windows
+ #ifdef _WIN64

app-text/gsview/gsview-4.9.ebuild

@@ -27,6 +27,7 @@ DEPEND="app-arch/unzip
 src_prepare() {
 	epatch "${FILESDIR}"/${PV}-gentoo.patch
 	epatch "${FILESDIR}"/${P}-libdl.patch
+	epatch "${FILESDIR}"/${P}-rev.patch
 	tc-export CC
 }