From: Gerhard Sittig <redacted>
Date: Sun, 14 Oct 2018 14:05:04 +0000 (+0200)
Subject: manual: accept absence of the asciidoctor-pdf exectuable
X-Git-Url: https://sigrok.org/gitaction?a=commitdiff_plain;h=6bbbf1f857f4e1b0de3da37a1a184f27a8ee41c7;p=pulseview.git

manual: accept absence of the asciidoctor-pdf exectuable

The asciidoctor(1) executable is considered mandatory when building the
Pulseview manual. The asciidoctor-pdf(1) executable is not universally
available (is missing in Debian), accept its absence, avoid execution
failure in that case.

This implementation replaces the actual .txt to .pdf conversion with a
mere echo(1) message, which may go unnoticed in verbose build output.
"make --no-print-directories manual" may be required to remain aware.
---

diff --git a/manual/CMakeLists.txt b/manual/CMakeLists.txt
index bdbd6c91..2cfd263f 100644
--- a/manual/CMakeLists.txt
+++ b/manual/CMakeLists.txt
@@ -38,17 +38,26 @@ add_custom_target(manual-html
 	WORKING_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR}
 	COMMENT "Generating manual, HTML output"
 )
-add_custom_target(manual-pdf
-	COMMAND ${ASCIIDOCTOR_PDF_EXECUTABLE}
-		-a stylesheet=${STYLE_SHEET}
-		-a stylesdir=${STYLES_DIR}
-		--destination-dir=${CMAKE_CURRENT_BINARY_DIR}
-		${MANUAL_SRC}
-	BYPRODUCTS ${MANUAL_OUT_PDF}
-	DEPENDS ${MANUAL_SRC}
-	WORKING_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR}
-	COMMENT "Generating manual, HTML output"
-)
+if (ASCIIDOCTOR_PDF_EXECUTABLE)
+	add_custom_target(manual-pdf
+		COMMAND ${ASCIIDOCTOR_PDF_EXECUTABLE}
+			-a stylesheet=${STYLE_SHEET}
+			-a stylesdir=${STYLES_DIR}
+			--destination-dir=${CMAKE_CURRENT_BINARY_DIR}
+			${MANUAL_SRC}
+		BYPRODUCTS ${MANUAL_OUT_PDF}
+		DEPENDS ${MANUAL_SRC}
+		WORKING_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR}
+		COMMENT "Generating manual, HTML output"
+	)
+else ()
+	add_custom_target(manual-pdf
+		COMMAND ${CMAKE_COMMAND} -E echo
+			"asciidoctor-pdf executable is missing, NOT generating HTML output"
+		DEPENDS ${MANUAL_SRC}
+		WORKING_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR}
+	)
+endif ()
 add_custom_target(manual)
 add_dependencies(manual manual-html manual-pdf)