diff mbox series

[bpf-next,13/17] tools/bpf: Templatize man page generation

Message ID 20210217010821.1810741-14-joe@wand.net.nz (mailing list archive)
State Changes Requested
Delegated to: BPF
Headers show
Series Improve BPF syscall command documentation | expand

Checks

Context Check Description
netdev/cover_letter success Link
netdev/fixes_present success Link
netdev/patch_count fail Series longer than 15 patches
netdev/tree_selection success Clearly marked for bpf-next
netdev/subject_prefix success Link
netdev/cc_maintainers warning 6 maintainers not CCed: andrii@kernel.org yhs@fb.com john.fastabend@gmail.com kpsingh@kernel.org songliubraving@fb.com kafai@fb.com
netdev/source_inline success Was 0 now: 0
netdev/verify_signedoff success Link
netdev/module_param success Was 0 now: 0
netdev/build_32bit success Errors and warnings before: 0 this patch: 0
netdev/kdoc success Errors and warnings before: 0 this patch: 0
netdev/verify_fixes success Link
netdev/checkpatch success total: 0 errors, 0 warnings, 0 checks, 94 lines checked
netdev/build_allmodconfig_warn success Errors and warnings before: 0 this patch: 0
netdev/header_inline success Link
netdev/stable success Stable not CCed

Commit Message

Joe Stringer Feb. 17, 2021, 1:08 a.m. UTC 
From: Joe Stringer <joe@cilium.io>

Previously, the Makefile here was only targeting a single manual page so
it just hardcoded a bunch of individual rules to specifically handle
build, clean, install, uninstall for that particular page.

Upcoming commits will generate manual pages for an additional section,
so this commit prepares the makefile first by converting the existing
targets into an evaluated set of targets based on the manual page name
and section.

Reviewed-by: Quentin Monnet <quentin@isovalent.com>
Signed-off-by: Joe Stringer <joe@cilium.io>
---
 tools/bpf/Makefile.docs                  | 52 ++++++++++++++++--------
 tools/bpf/bpftool/Documentation/Makefile |  8 ++--
 2 files changed, 39 insertions(+), 21 deletions(-)
diff mbox series

Patch

diff --git a/tools/bpf/Makefile.docs b/tools/bpf/Makefile.docs
index dc4ce82ada33..7111888ca5d8 100644
--- a/tools/bpf/Makefile.docs
+++ b/tools/bpf/Makefile.docs
@@ -29,32 +29,50 @@  MAN7_RST = $(HELPERS_RST)
 _DOC_MAN7 = $(patsubst %.rst,%.7,$(MAN7_RST))
 DOC_MAN7 = $(addprefix $(OUTPUT),$(_DOC_MAN7))
 
+DOCTARGETS := helpers
+
+docs: $(DOCTARGETS)
 helpers: man7
 man7: $(DOC_MAN7)
 
 RST2MAN_DEP := $(shell command -v rst2man 2>/dev/null)
 
-$(OUTPUT)$(HELPERS_RST): $(UP2DIR)../../include/uapi/linux/bpf.h
-	$(QUIET_GEN)$(UP2DIR)../../scripts/bpf_doc.py --filename $< > $@
+# Configure make rules for the man page bpf-$1.$2.
+# $1 - target for scripts/bpf_doc.py
+# $2 - man page section to generate the troff file
+define DOCS_RULES =
+$(OUTPUT)bpf-$1.rst: $(UP2DIR)../../include/uapi/linux/bpf.h
+	$$(QUIET_GEN)$(UP2DIR)../../scripts/bpf_doc.py $1 \
+		--filename $$< > $$@
 
-$(OUTPUT)%.7: $(OUTPUT)%.rst
+$(OUTPUT)%.$2: $(OUTPUT)%.rst
 ifndef RST2MAN_DEP
-	$(error "rst2man not found, but required to generate man pages")
+	$$(error "rst2man not found, but required to generate man pages")
 endif
-	$(QUIET_GEN)rst2man $< > $@
+	$$(QUIET_GEN)rst2man $$< > $$@
+
+docs-clean-$1:
+	$$(call QUIET_CLEAN, eBPF_$1-manpage)
+	$(Q)$(RM) $$(DOC_MAN$2) $(OUTPUT)bpf-$1.rst
+
+docs-install-$1: docs
+	$$(call QUIET_INSTALL, eBPF_$1-manpage)
+	$(Q)$(INSTALL) -d -m 755 $(DESTDIR)$$(man$2dir)
+	$(Q)$(INSTALL) -m 644 $$(DOC_MAN$2) $(DESTDIR)$$(man$2dir)
+
+docs-uninstall-$1:
+	$$(call QUIET_UNINST, eBPF_$1-manpage)
+	$(Q)$(RM) $$(addprefix $(DESTDIR)$$(man$2dir)/,$$(_DOC_MAN$2))
+	$(Q)$(RMDIR) $(DESTDIR)$$(man$2dir)
 
-helpers-clean:
-	$(call QUIET_CLEAN, eBPF_helpers-manpage)
-	$(Q)$(RM) $(DOC_MAN7) $(OUTPUT)$(HELPERS_RST)
+.PHONY: $1 docs-clean-$1 docs-install-$1 docs-uninstall-$1
+endef
 
-helpers-install: helpers
-	$(call QUIET_INSTALL, eBPF_helpers-manpage)
-	$(Q)$(INSTALL) -d -m 755 $(DESTDIR)$(man7dir)
-	$(Q)$(INSTALL) -m 644 $(DOC_MAN7) $(DESTDIR)$(man7dir)
+# Create the make targets to generate manual pages by name and section
+$(eval $(call DOCS_RULES,helpers,7))
 
-helpers-uninstall:
-	$(call QUIET_UNINST, eBPF_helpers-manpage)
-	$(Q)$(RM) $(addprefix $(DESTDIR)$(man7dir)/,$(_DOC_MAN7))
-	$(Q)$(RMDIR) $(DESTDIR)$(man7dir)
+docs-clean: $(foreach doctarget,$(DOCTARGETS), docs-clean-$(doctarget))
+docs-install: $(foreach doctarget,$(DOCTARGETS), docs-install-$(doctarget))
+docs-uninstall: $(foreach doctarget,$(DOCTARGETS), docs-uninstall-$(doctarget))
 
-.PHONY: helpers helpers-clean helpers-install helpers-uninstall
+.PHONY: docs docs-clean docs-install docs-uninstall man7
diff --git a/tools/bpf/bpftool/Documentation/Makefile b/tools/bpf/bpftool/Documentation/Makefile
index bb7842efffd6..f60b800584a5 100644
--- a/tools/bpf/bpftool/Documentation/Makefile
+++ b/tools/bpf/bpftool/Documentation/Makefile
@@ -24,7 +24,7 @@  MAN8_RST = $(wildcard bpftool*.rst)
 _DOC_MAN8 = $(patsubst %.rst,%.8,$(MAN8_RST))
 DOC_MAN8 = $(addprefix $(OUTPUT),$(_DOC_MAN8))
 
-man: man8 helpers
+man: man8 docs
 man8: $(DOC_MAN8)
 
 RST2MAN_DEP := $(shell command -v rst2man 2>/dev/null)
@@ -46,16 +46,16 @@  ifndef RST2MAN_DEP
 endif
 	$(QUIET_GEN)( cat $< ; printf "%b" $(call see_also,$<) ) | rst2man $(RST2MAN_OPTS) > $@
 
-clean: helpers-clean
+clean: docs-clean
 	$(call QUIET_CLEAN, Documentation)
 	$(Q)$(RM) $(DOC_MAN8)
 
-install: man helpers-install
+install: man docs-install
 	$(call QUIET_INSTALL, Documentation-man)
 	$(Q)$(INSTALL) -d -m 755 $(DESTDIR)$(man8dir)
 	$(Q)$(INSTALL) -m 644 $(DOC_MAN8) $(DESTDIR)$(man8dir)
 
-uninstall: helpers-uninstall
+uninstall: docs-uninstall
 	$(call QUIET_UNINST, Documentation-man)
 	$(Q)$(RM) $(addprefix $(DESTDIR)$(man8dir)/,$(_DOC_MAN8))
 	$(Q)$(RMDIR) $(DESTDIR)$(man8dir)