From b0f1d3d6ea1b380e628958bd1b17ccb2c789ec2d Mon Sep 17 00:00:00 2001
From: Přemysl Eric Janouch <p@janouch.name>
Date: Wed, 24 Aug 2022 00:43:14 +0200
Subject: Build with AsciiDoc as well as Asciidoctor

And bump copyright years.
---
 CMakeLists.txt | 29 ++++++++++++++++++++---------
 1 file changed, 20 insertions(+), 9 deletions(-)

(limited to 'CMakeLists.txt')

diff --git a/CMakeLists.txt b/CMakeLists.txt
index d740ec0..fd2cc27 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -130,20 +130,31 @@ GETTEXT_CREATE_TRANSLATIONS (
 
 # Documentation
 find_program (ASCIIDOCTOR_EXECUTABLE asciidoctor)
-if (NOT ASCIIDOCTOR_EXECUTABLE)
-	message (FATAL_ERROR "asciidoctor not found")
+find_program (A2X_EXECUTABLE a2x)
+if (NOT ASCIIDOCTOR_EXECUTABLE AND NOT A2X_EXECUTABLE)
+	message (FATAL_ERROR "Neither asciidoctor nor a2x were found")
 endif ()
 
 foreach (page "${PROJECT_NAME}.1")
 	set (page_output "${PROJECT_BINARY_DIR}/${page}")
 	list (APPEND project_MAN_PAGES "${page_output}")
-	add_custom_command (OUTPUT ${page_output}
-		COMMAND ${ASCIIDOCTOR_EXECUTABLE} -b manpage
-			-a release-version=${PROJECT_VERSION}
-			"${PROJECT_SOURCE_DIR}/docs/${page}.adoc"
-			-o "${page_output}"
-		DEPENDS "docs/${page}.adoc"
-		COMMENT "Generating man page for ${page}" VERBATIM)
+	if (ASCIIDOCTOR_EXECUTABLE)
+		add_custom_command (OUTPUT ${page_output}
+			COMMAND ${ASCIIDOCTOR_EXECUTABLE} -b manpage
+				-a release-version=${PROJECT_VERSION}
+				-o "${page_output}"
+				"${PROJECT_SOURCE_DIR}/docs/${page}.adoc"
+			DEPENDS "docs/${page}.adoc"
+			COMMENT "Generating man page for ${page}" VERBATIM)
+	elseif (A2X_EXECUTABLE)
+		add_custom_command (OUTPUT ${page_output}
+			COMMAND ${A2X_EXECUTABLE} --doctype manpage --format manpage
+				-a release-version=${PROJECT_VERSION}
+				-D "${PROJECT_BINARY_DIR}"
+				"${PROJECT_SOURCE_DIR}/docs/${page}.adoc"
+			DEPENDS "docs/${page}.adoc"
+			COMMENT "Generating man page for ${page}" VERBATIM)
+	endif ()
 endforeach ()
 
 add_custom_target (docs ALL DEPENDS ${project_MAN_PAGES})
-- 
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