[PATCH libgpiod v3 10/16] doc: create man entries for gpio-manager and gpiocli

[Bartosz Golaszewski <brgl@bgdev.pl>]

From: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>

Extend the build files under man/ to also generate man pages for
gpio-manager, gpiocli and each of the former's sub-commands.

Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
---
 Makefile.am     |  8 ++++++-
 man/Makefile.am | 72 +++++++++++++++++++++++++++++++++++++++++++++++----------
 2 files changed, 67 insertions(+), 13 deletions(-)

diff --git a/Makefile.am b/Makefile.am
index c824dc4..d310e17 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -24,7 +24,7 @@ endif
 
 if WITH_TOOLS
 
-SUBDIRS += tools man
+SUBDIRS += tools
 
 endif
 
@@ -44,6 +44,12 @@ SUBDIRS += dbus
 
 endif
 
+if WITH_MANPAGES
+
+SUBDIRS += man
+
+endif
+
 if HAS_DOXYGEN
 
 doc: Doxyfile
diff --git a/man/Makefile.am b/man/Makefile.am
index ddd0628..8d8bc46 100644
--- a/man/Makefile.am
+++ b/man/Makefile.am
@@ -1,22 +1,70 @@
 # SPDX-License-Identifier: GPL-2.0-or-later
 # SPDX-FileCopyrightText: 2017-2021 Bartosz Golaszewski <bartekgola@gmail.com>
+# SPDX-FileCopyrightText: 2025 Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
 
-if WITH_MANPAGES
+MAN_ENTRIES =
+MAN_DEPS =
 
-dist_man1_MANS = \
-	gpiodetect.man \
-	gpioinfo.man \
-	gpioget.man \
-	gpioset.man \
-	gpiomon.man \
-	gpionotify.man
+if WITH_TOOLS
 
-%.man: $(top_builddir)/tools/$(*F)
-	$(AM_V_GEN)help2man $(top_builddir)/tools/$(*F) --include=$(srcdir)/template --output=$(builddir)/$@ --no-info
+TOOLS = \
+	gpiodetect \
+	gpioinfo \
+	gpioget \
+	gpioset \
+	gpiomon \
+	gpionotify
+
+MAN_ENTRIES += $(TOOLS)
+MAN_DEPS += $(foreach dep,$(TOOLS),$(top_builddir)/tools/$(dep))
+
+endif
+
+if WITH_DBUS
+
+GPIOCLI_CMDS = \
+	detect \
+	find \
+	info \
+	get \
+	monitor \
+	notify \
+	reconfigure \
+	release \
+	request \
+	requests \
+	set \
+	wait
+
+MAN_ENTRIES += \
+	gpio-manager \
+	gpiocli \
+	$(foreach cmd,$(GPIOCLI_CMDS),gpiocli-$(cmd))
+
+MAN_DEPS += \
+	$(top_builddir)/dbus/manager/gpio-manager
+	$(top_builddir)/dbus/client/gpiocli
+
+endif
+
+dist_man1_MANS := $(foreach entry,$(MAN_ENTRIES),$(entry).man)
+
+%.man: $(MAN_DEPS)
+	$(AM_V_GEN)export PATH=$(top_builddir)/dbus/manager/:$(top_builddir)/dbus/client/:$(top_builddir)/tools/:$$PATH; \
+	if [ "$(*F)" = "gpio-manager" ]; then \
+		EXEC=$(*F); \
+		NAME="libgpiod D-Bus daemon"; \
+		HELP=--help-option=--help; \
+	else \
+		EXEC=$(if $(findstring -,$(*F)),$(word 1,$(subst -, ,$(*F))),$(*F)); \
+		NAME=$(if $(findstring -,$(*F)),$(word 2,$(subst -, ,$(*F))),"libgpiod command-line utility"); \
+		HELP=$(if $(findstring -,$(*F)),--help-option="$(word 2,$(subst -, ,$(*F))) --help",--help-option=--help); \
+	fi; \
+	help2man $$EXEC \
+		--include=$(srcdir)/template --output=$(builddir)/$@ --no-info \
+		--name="$$NAME" "$$HELP" --manual=$(*F)
 
 clean-local:
 	rm -f $(dist_man1_MANS)
 
-endif
-
 EXTRA_DIST = template

-- 
2.45.2