git: 151b473480 - main - documentation: Remove asciidoctor-pdf from default requirements

The branch main has been updated by dbaio:

URL: https://cgit.FreeBSD.org/doc/commit/?id=151b473480373cea7cdc1af86a1e7837976429a1

commit 151b473480373cea7cdc1af86a1e7837976429a1
Author:     Danilo G. Baio <dbaio@FreeBSD.org>
AuthorDate: 2021-10-09 21:13:16 +0000
Commit:     Danilo G. Baio <dbaio@FreeBSD.org>
CommitDate: 2021-10-09 21:13:16 +0000

    documentation: Remove asciidoctor-pdf from default requirements
    
    With the current requirements, if textproc/docproj is built with PDF
    option disabled, you can't build the documentation.
    
    This fixes that, and now asciidoctor-pdf will be checked only when
    building PDF.
    
    Reported by:    jhb
---
 documentation/Makefile | 11 ++++++++---
 1 file changed, 8 insertions(+), 3 deletions(-)

diff --git a/documentation/Makefile b/documentation/Makefile
index c8c4f4322d..44bb80fa28 100644
--- a/documentation/Makefile
+++ b/documentation/Makefile
@@ -52,7 +52,6 @@ RUBYLIB =	../shared/lib
 RUN_DEPENDS=	${PYTHON_CMD} \
 		${HUGO_CMD} \
 		${LOCALBASE}/bin/asciidoctor \
-		${LOCALBASE}/bin/asciidoctor-pdf \
 		${LOCALBASE}/bin/rougify
 
 .ifndef HOSTNAME
@@ -108,6 +107,12 @@ requirements:
 .endif
 .endfor
 
+requirements-pdf:
+.if !exists(${LOCALBASE}/bin/asciidoctor-pdf)
+	@(echo ${LOCALBASE}/bin/asciidoctor-pdf not found, please run 'pkg install rubygem-asciidoctor-pdf'; exit 1)
+.endif
+
+
 starting-message: .PHONY
 	@echo ---------------------------------------------------------------
 	@echo                   Building the documentation
@@ -169,7 +174,7 @@ TTMP += ${.CURDIR}/content/${_lang}/articles/*/
 .endfor
 ARTICLESDIR != echo ${TTMP}
 
-pdf-books: pdf-books-target generate-books-toc
+pdf-books: requirements-pdf pdf-books-target generate-books-toc
 
 # Books build
 #
@@ -213,7 +218,7 @@ pdf-books: pdf-books-target generate-books-toc
 .endif
 .endfor
 
-pdf-articles: pdf-articles-target
+pdf-articles: requirements-pdf pdf-articles-target
 
 # Articles build
 .for _curpdf in ${ARTICLESDIR}