build(doc): drop pandoc generation of manpage

As pointed out by Noah in Azure#15, Debian packaging lints issues in the
generated manpage due to formatting emitted by older versions of pandoc:
jgm/pandoc#9020

While changes in recent versions of pandoc have improved the output,
let's just take the generated output from pandoc 3.2 as a starting point
and maintain it manually for the time being.  This reduces friction for
packaging and gives us flexibility if we wanted to do something in the
manpage that pandoc doesn't support.

Signed-off-by: Chris Patterson <[email protected]>

.github/workflows/main.yml

@@ -26,7 +26,7 @@ jobs:
     - name: Setup
       run: |
         sudo apt update
-        sudo apt install gcc pandoc cmake -y
+        sudo apt install gcc cmake -y
     - name: Build & install project with cmake
       run: |
         cmake .

cmake/doc.cmake

@@ -1,22 +1,9 @@
-find_program(PANDOC_EXECUTABLE pandoc)
-if(NOT PANDOC_EXECUTABLE)
-        message(WARNING "Pandoc not found, will not generate manpages")
-        return()
-endif()
-
 string(TIMESTAMP TODAY "%B %d, %Y")
 
-add_custom_command(
-	OUTPUT ${CMAKE_CURRENT_BINARY_DIR}/doc/azure-nvme-id.1
-	COMMAND ${CMAKE_COMMAND} -E make_directory ${CMAKE_CURRENT_BINARY_DIR}/doc
-	COMMAND ${PANDOC_EXECUTABLE}
-		${CMAKE_SOURCE_DIR}/doc/azure-nvme-id.md
-		--standalone --from markdown --to man
-		--variable footer="azure-nvme-id ${VERSION}"
-		--variable date="${TODAY}"
-		-o ${CMAKE_CURRENT_BINARY_DIR}/doc/azure-nvme-id.1
-	DEPENDS ${CMAKE_SOURCE_DIR}/doc/azure-nvme-id.md
-	COMMENT "Generating manpage for azure-nvme-id"
+configure_file(
+    "${CMAKE_SOURCE_DIR}/doc/azure-nvme-id.1"
+    "${CMAKE_CURRENT_BINARY_DIR}/doc/azure-nvme-id.1"
+    @ONLY
 )
 
 add_custom_target(

doc/azure-nvme-id.1

@@ -0,0 +1,54 @@
+.TH "azure\-nvme\-id" "1" "@TODAY@" "azure-nvme-id\ @VERSION@" "User Manual"
+.SH NAME
+azure\-nvme\-id \- Identify Azure NVMe devices.
+.SH SYNOPSIS
+\f[B]azure\-nvme\-id\f[R] [\-\-debug] [\-\-help | \-\-version |
+\-\-udev]
+.SH DESCRIPTION
+\f[B]azure\-nvme\-id\f[R] is a utility to identify Azure NVMe devices.
+.PP
+It performs an Identify Namespace command on the NVMe namespaces,
+parsing metadata available in the vendor\-specific (vs) field which
+contains various identification details with a comma\-separated,
+key=value format.
+.SH OPTIONS
+.TP
+\f[CR]\-\-help\f[R]
+Show usage information and exit.
+.TP
+\f[CR]\-\-version\f[R]
+Show version information and exit.
+.TP
+\f[CR]\-\-udev\f[R]
+Run in udev mode, printing a set of \f[CR]<key>=<value>\f[R] variables
+consumed by udev rules.
+Requires DEVNAME to be set in environment.
+.SH EXAMPLES
+Identify NVMe namespaces:
+.IP
+.EX
+$ sudo azure\-nvme\-id
+/dev/nvme0n1:
+/dev/nvme1n1: type=local,index=1,name=nvme\-110G\-1
+.EE
+.PP
+Parse device identifiers for udev consumption:
+.IP
+.EX
+$ sudo env DEVNAME=/dev/nvme1n1 azure\-nvme\-id \-\-udev
+AZURE_NVME_VS=type=local,index=1,name=nvme\-110G\-1
+AZURE_NVME_TYPE=local
+AZURE_NVME_INDEX=1
+AZURE_NVME_NAME=nvme\-110G\-1
+.EE
+.PP
+Check \f[CR]azure\-nvme\-id\f[R] version:
+.IP
+.EX
+$ azure\-nvme\-id \-\-version
+azure\-nvme\-id 0.1.2
+.EE
+.SH SEE ALSO
+Source and documentation available at: \c
+.UR https://github.com/Azure/azure-nvme-utils
+.UE \c