[PATCH v2 -perfbook] Makefile: Cope with GhostScript 9.53.0 or later

[Akira Yokosawa <akiyks@gmail.com>]

From d48155e896265c1a26985fe26f9bf8c5fbcfd22e Mon Sep 17 00:00:00 2001
From: Akira Yokosawa <akiyks@gmail.com>
Date: Mon, 4 Jan 2021 07:58:18 +0900
Subject: [PATCH v2 -perfbook] Makefile: Cope with GhostScript 9.53.0 or later
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Combination of GhostScript 9.53.x and pstricks-base 3.01 requires
an additional option of "gs" to enable transparency.

Current version of a2ping can not cope with this change.

Instead, use the pair of commands "ps2pdf" and "pdfcrop" for .eps
files originated from .tex sources if a new version of gs is detected.

Note:
Due to the use of a deprecated command in pstricks.pro (boilerplate
prologue code), gs 9.53.x emits repetitive warnings of:

   **** WARNING: .setopacityalpha is deprecated (as of 9.53.0) and will be removed in a future release
   **** See .setfillconstantalpha/.setalphaisshape for the improved solution

I'll silence them once I'm sure the stability of new commands in
Makefile.

Reported-by: Дмитрий Дьяченко <dimhen@gmail.com>
Reported-by: Felipe Balbi <balbi@kernel.org>
Tested-by: Felipe Balbi <balbi@kernel.org>
Signed-off-by: Akira Yokosawa <akiyks@gmail.com>
---
Hi,

I thought I didn't redirect the warnings at all, but pdfcrop's stderr
was redirected in v1.
I removed the redirection in v2.

Changes v1 -> v2:
  o Add Felipe's Tested-by
  o Mention warnings from gs in commit log's note.
  o Remove ineffective redirection at the end of pipeline.

        Thanks, Akira
--
Makefile | 30 +++++++++++++++++++++++++-----
 1 file changed, 25 insertions(+), 5 deletions(-)

diff --git a/Makefile b/Makefile
index 56ce62bf..0c58f1a0 100644
--- a/Makefile
+++ b/Makefile
@@ -38,6 +38,8 @@ EPSSOURCES_FROM_TEX := \
 	SMPdesign/DiningPhilosopher4part-b.eps \
 	SMPdesign/DiningPhilosopher5PEM.eps
 
+PDFTARGETS_OF_TEX := $(EPSSOURCES_FROM_TEX:%.eps=%.pdf)
+
 DOTSOURCES := $(wildcard */*.dot)
 
 EPSSOURCES_FROM_DOT := $(DOTSOURCES:%.dot=%.eps)
@@ -70,7 +72,7 @@ EPSORIGIN := $(filter-out $(EPSSOURCES_FROM_TEX) $(EPSSOURCES_FROM_DOT) $(EPSSOU
 
 PDFTARGETS_OF_EPSORIG := $(EPSORIGIN:%.eps=%.pdf)
 
-PDFTARGETS_OF_EPSOTHER := $(filter-out $(PDFTARGETS_OF_EPSORIG),$(PDFTARGETS_OF_EPS))
+PDFTARGETS_OF_EPSOTHER := $(filter-out $(PDFTARGETS_OF_EPSORIG) $(PDFTARGETS_OF_TEX),$(PDFTARGETS_OF_EPS))
 
 BIBSOURCES := bib/*.bib alphapf.bst
 
@@ -124,19 +126,23 @@ ifdef A2PING
   GS_950_OR_LATER := $(shell gs --version | grep -c -E "9\.[5-9].?")
   A2PING_277P := $(shell a2ping --help 2>&1 | grep -c "2.77p,")
   A2PING_283P := $(shell a2ping --help 2>&1 | grep -c "2.83p,")
+  GS_953_OR_LATER := $(shell gs --version | grep -c -E "9\.5[3-9].?")
   ifeq ($(A2PING_277P),1)
-    A2PING_GSCNFL := 1
+    A2PING_GSCNFL = 1
   else
     ifeq ($(A2PING_283P),1)
       ifeq ($(GS_950_OR_LATER),1)
-        A2PING_GSCNFL := 1
+        A2PING_GSCNFL = 1
       else
-        A2PING_GSCNFL := 0
+        A2PING_GSCNFL = 0
       endif
     else
-      A2PING_GSCNFL := 0
+      A2PING_GSCNFL = 0
     endif
   endif
+  ifeq ($(GS_953_OR_LATER),1)
+    A2PING_GSCNFL = 2
+  endif
 endif
 
 LINELABEL_ENV_BEGIN := $(shell grep -l -F '\begin{linelabel}' $(LATEXSOURCES))
@@ -395,6 +401,20 @@ endif
 	@a2ping --below --hires --bboxfrom=compute-gs $<i $@ > /dev/null 2>&1
 	@rm -f $<i
 
+$(PDFTARGETS_OF_TEX): %.pdf: %.eps
+	@echo "$< --> $@"
+ifndef A2PING
+	$(error $< --> $@: a2ping not found. Please install it)
+endif
+ifeq ($(A2PING_GSCNFL),1)
+	$(error a2ping version conflict. See #7 in FAQ-BUILD.txt)
+endif
+ifeq ($(A2PING_GSCNFL),2)
+	@ps2pdf -dALLOWPSTRANSPARENCY -dNOSAFER $< - | pdfcrop -hires - $@
+else
+	@a2ping --below --hires --bboxfrom=compute-gs $< $@ > /dev/null 2>&1
+endif
+
 $(PDFTARGETS_OF_EPSOTHER): %.pdf: %.eps
 	@echo "$< --> $@"
 ifndef A2PING
-- 
2.17.1