[XEN PATCH 2/3] docs: make the docs for MISRA C:2012 Dir 4.1 visible to ECLAIR

[Nicola Vetrini <nicola.vetrini@xxxxxxxxxxx>]

To be able to check for the existence of the necessary subsections in
the documentation for MISRA C:2012 Dir 4.1, ECLAIR needs to have a source
file that is built.

This file is generated from 'C-runtime-failures.rst' in docs/misra
and the configuration is updated accordingly.

Signed-off-by: Nicola Vetrini <nicola.vetrini@xxxxxxxxxxx>
---
Changes from RFC:
- Dropped unused/useless code
- Revised the sed command
- Revised the clean target
---
 docs/Makefile       |  7 ++++++-
 docs/misra/Makefile | 17 +++++++++++++++++
 2 files changed, 23 insertions(+), 1 deletion(-)
 create mode 100644 docs/misra/Makefile

diff --git a/docs/Makefile b/docs/Makefile
index 966a104490ac..ff991a0c3ca2 100644
--- a/docs/Makefile
+++ b/docs/Makefile
@@ -43,7 +43,7 @@ DOC_PDF  := $(patsubst %.pandoc,pdf/%.pdf,$(PANDOCSRC-y)) \
 all: build
 
 .PHONY: build
-build: html txt pdf man-pages figs
+build: html txt pdf man-pages figs misra
 
 .PHONY: sphinx-html
 sphinx-html:
@@ -66,9 +66,14 @@ endif
 .PHONY: pdf
 pdf: $(DOC_PDF)
 
+.PHONY: misra
+misra:
+       $(MAKE) -C misra
+
 .PHONY: clean
 clean: clean-man-pages
        $(MAKE) -C figs clean
+       $(MAKE) -C misra clean
        rm -rf .word_count *.aux *.dvi *.bbl *.blg *.glo *.idx *~
        rm -rf *.ilg *.log *.ind *.toc *.bak *.tmp core
        rm -rf html txt pdf sphinx/html
diff --git a/docs/misra/Makefile b/docs/misra/Makefile
new file mode 100644
index 000000000000..8ea0505c8a20
--- /dev/null
+++ b/docs/misra/Makefile
@@ -0,0 +1,17 @@
+TARGETS := C-runtime-failures.o
+
+all: $(TARGETS)
+
+# sed is used in place of cat to prevent occurrences of '*/'
+# in the .rst from breaking the compilation
+$(TARGETS:.o=.c): %.c: %.rst
+       echo "/*\n" > $@.tmp
+       sed -e 's|\*/|*//*|g' $< >> $@.tmp
+       echo "\n*/" >> $@.tmp
+       mv $@.tmp $@
+
+%.o: %.c
+       $(CC) -c $< -o $@
+
+clean:
+       rm -f C-runtime-failures.c *.o *.tmp
-- 
2.34.1