[S] Change in flashrom[master]: Makefile,meson.build: Add support for Sphinx 3.x

[Anton Samsonov (Code Review)]

Anton Samsonov has uploaded this change for review. ( https://review.coreboot.org/c/flashrom/+/77778?usp=email )

Change subject: Makefile,meson.build: Add support for Sphinx 3.x
......................................................................

Makefile,meson.build: Add support for Sphinx 3.x

Prior to version 4.0, `sphinx-build` outputs man pages to "8" directory
instead of "man8" (for details, see their GitHub issues 7996 and 9217).
Current solution is to rename "8" to "man8" after documentation is build.
That enables successful build and installation, as well as dependency
tracking at build-system level, but not on `sphinx-build` own level
upon which `meson` build relies.

Change-Id: I9cd280551a1ba4d17edb2e857d56f80431b61e1b
Signed-off-by: Anton Samsonov 
---
M Makefile
M doc/meson.build
A doc/sphinx-wrapper.sh
3 files changed, 40 insertions(+), 2 deletions(-)

git pull ssh://review.coreboot.org:29418/flashrom refs/changes/78/77778/1

diff --git a/Makefile b/Makefile
index bf01d0f..3992ee3 100644
--- a/Makefile
+++ b/Makefile
@@ -227,6 +227,10 @@
 CONFIG_LIBPCI_CFLAGS       := $(call dependency_cflags, libpci)
 CONFIG_LIBPCI_LDFLAGS      := $(call dependency_ldflags, libpci)

+CONFIG_SPHINXBUILD_VERSION :=
+CONFIG_SPHINXBUILD_MAJOR   := 0
+
+
 # Determine the destination OS, architecture and endian
 # IMPORTANT: The following lines must be placed before TARGET_OS, ARCH or ENDIAN
 # is ever used (of course), but should come after any lines setting CC because
@@ -947,6 +951,11 @@

OBJS = $(CHIP_OBJS) $(PROGRAMMER_OBJS) $(LIB_OBJS)

+ifeq ($(HAS_SPHINXBUILD), yes)
+override CONFIG_SPHINXBUILD_VERSION := $(shell $(SPHINXBUILD) --version | cut -d' ' -f2 )
+override CONFIG_SPHINXBUILD_MAJOR   := $(shell echo "$(CONFIG_SPHINXBUILD_VERSION)" | cut -d'.' -f1 )
+endif
+

all: $(PROGRAM)$(EXEC_SUFFIX) $(call has_dependency, $(HAS_SPHINXBUILD), man8/$(PROGRAM).8)
 ifeq ($(ARCH), x86)
@@ -1009,7 +1018,7 @@
    	echo "The following features are unavailable on your machine: $(UNSUPPORTED_FEATURES)" \
    	exit 1;								\
    fi
-	@echo "Checking for program "sphinx-build": $(HAS_SPHINXBUILD)"
+	@echo "Checking for program "sphinx-build": $(HAS_SPHINXBUILD) $(CONFIG_SPHINXBUILD_VERSION)"

%.o: %.c | config
    $(CC) -MMD $(CFLAGS) $(CPPFLAGS) $(FLASHROM_CFLAGS) $(FEATURE_FLAGS) -D'FLASHROM_VERSION=$(VERSION)'  -o $@ -c $<
@@ -1024,6 +1033,12 @@
 man8/$(PROGRAM).8: doc/*
    @if [ "$(HAS_SPHINXBUILD)" = "yes" ]; then			\
    	$(SPHINXBUILD) -Drelease=$(VERSION) -b man doc .;	\
+		if [ "$(CONFIG_SPHINXBUILD_MAJOR)" -lt 4 ]; then	\
+			if [ -d 8 ]; then				\
+				rm -rf man8;				\
+				mv 8 man8;				\
+			fi						\
+		fi							\
    else								\
    	echo "$(SPHINXBUILD) not found. Can't build man-page";	\
    	exit 1;							\
diff --git a/doc/meson.build b/doc/meson.build
index aca73d8..f81d991 100644
--- a/doc/meson.build
+++ b/doc/meson.build
@@ -1,5 +1,6 @@

sphinx = find_program('sphinx-build', native : true, required : get_option('man-pages').enabled() or get_option('documentation').enabled())
+sphinx_wrapper = '@CURRENT_SOURCE_DIR@/sphinx-wrapper.sh'

man_pages = [
   'flashrom.8'
@@ -14,7 +15,7 @@

custom_target(
       'man-pages',
-      command : [sphinx, '-b', 'man', '-q', '-d', '@PRIVATE_DIR@', '-Drelease=' + flashrom_version,'@CURRENT_SOURCE_DIR@', '@OUTDIR@'],
+      command : [sphinx_wrapper, '@OUTDIR@', ' '.join(man_outputs), sphinx, '-b', 'man', '-q', '-d', '@PRIVATE_DIR@', '-Drelease=' + flashrom_version, '@CURRENT_SOURCE_DIR@', '@OUTDIR@'],
       build_always_stale : true, # sphinx handles rebuilds
       output  : man_outputs,
       install : true,
diff --git a/doc/sphinx-wrapper.sh b/doc/sphinx-wrapper.sh
new file mode 100755
index 0000000..b0ee33c
--- /dev/null
+++ b/doc/sphinx-wrapper.sh
@@ -0,0 +1,22 @@
+#!/bin/sh
+
+OUTPUT_HOME="$1"
+MAN_OUTPUTS="$2"
+SPHINXBUILD="$3"
+shift 3
+
+"${SPHINXBUILD}" "$@" || exit $?
+
+SPHINXBUILD_MAJOR="$("${SPHINXBUILD}" --version | cut -d' ' -f2 | cut -d'.' -f1)"
+if [ "${SPHINXBUILD_MAJOR}" -ge 4 ]; then
+	exit 0
+fi
+
+for MAN_OUTPUT in ${MAN_OUTPUTS}; do
+	PATH_TARGET="${OUTPUT_HOME}/${MAN_OUTPUT}"
+	PATH_ACTUAL="${OUTPUT_HOME}/${MAN_OUTPUT#man}"
+	if [ -d "${PATH_ACTUAL}" ]; then
+		rm -rf "${PATH_TARGET}"
+		mv "${PATH_ACTUAL}" "${PATH_TARGET}"
+	fi
+done