From 28cb50503b2f9428de34dee0d62f2e46f1c0fa59 Mon Sep 17 00:00:00 2001
From: John MacFarlane <jgm@berkeley.edu>
Date: Wed, 1 Jul 2015 16:29:44 -0700
Subject: Generate man page in cabal build process and include in data/.

The pandoc.1 man page is generated automatically after the cabal
build process.  It goes in `data/pandoc.1`.  It can be obtained
by the user who installs pandoc via cabal thus:

    pandoc --print-default-data-file pandoc.1 > pandoc.1
---
 INSTALL             |  2 +-
 Makefile            | 12 +-----------
 Setup.hs            | 17 +++++++++++++++++
 make_deb.sh         |  3 +--
 make_osx_package.sh |  3 +--
 pandoc.cabal        |  2 ++
 6 files changed, 23 insertions(+), 16 deletions(-)

diff --git a/INSTALL b/INSTALL
index c3c18b154..88d962a85 100644
--- a/INSTALL
+++ b/INSTALL
@@ -77,7 +77,7 @@ Quick install
 
 To build the `pandoc.1` man page:
 
-    make man/man1/pandoc.1
+    pandoc --print-default-data-file pandoc.1 > pandoc.1
 
 To build the `pandoc-citeproc` man pages, go to the pandoc-citeproc
 build directory, and
diff --git a/Makefile b/Makefile
index 265786a6c..46c2be669 100644
--- a/Makefile
+++ b/Makefile
@@ -40,21 +40,11 @@ debpkg:
 osxpkg:
 	./make_osx_package.sh
 
-man/man1/pandoc.1: README man/pandoc.1.template
-	@[ -n "$(pandoc)" ] || \
-		(echo "Could not find pandoc in dist/" && exit 1)
-	$(pandoc) $< -t man -s --template man/pandoc.1.template \
-	   --filter man/capitalizeHeaders.hs \
-	   --filter man/removeNotes.hs \
-	   --filter man/removeLinks.hs \
-	   -o $@
-
 download_stats:
 	curl https://api.github.com/repos/jgm/pandoc/releases | \
 		jq '[.[] | .assets | .[] | {name: .name, download_count: .download_count}]'
 
 clean:
 	cabal clean
-	-rm man/man1/pandoc.1
 
-.PHONY: deps quick full install man clean test bench haddock osxpkg dist bindist prof download_stats
+.PHONY: deps quick full install clean test bench osxpkg dist prof download_stats
diff --git a/Setup.hs b/Setup.hs
index 6db3b1aec..03e3248ef 100644
--- a/Setup.hs
+++ b/Setup.hs
@@ -31,6 +31,8 @@ main :: IO ()
 main = defaultMainWithHooks $ simpleUserHooks {
       -- enable hsb2hs preprocessor for .hsb files
       hookedPreProcessors = [ppBlobSuffixHandler]
+    , postBuild = \args bf pkgdescr lbi ->
+                  makeManPages args bf pkgdescr lbi
     }
 
 ppBlobSuffixHandler :: PPSuffixHandler
@@ -45,3 +47,18 @@ ppBlobSuffixHandler = ("hsb", \_ _ ->
             Nothing -> error "hsb2hs is needed to build this program: cabal install hsb2hs"
          return ()
   })
+
+makeManPages :: Args -> BuildFlags -> PackageDescription -> LocalBuildInfo
+             -> IO ()
+makeManPages _ bf _ LocalBuildInfo{buildDir=buildDir}
+  = do info verbosity "Creating data/pandoc.1"
+       rawSystemExit verbosity progPath args
+  where verbosity = fromFlagOrDefault normal $ buildVerbosity bf
+        progPath = buildDir </> "pandoc" </> "pandoc"
+        args = ["README", "-t", "man", "-s",
+                "--template", "man/pandoc.1.template",
+                "--filter", "man/capitalizeHeaders.hs",
+                "--filter", "man/removeNotes.hs",
+                "--filter", "man/removeLinks.hs",
+                "-o", "data/pandoc.1"]
+
diff --git a/make_deb.sh b/make_deb.sh
index ebe82b01f..b61a43d32 100755
--- a/make_deb.sh
+++ b/make_deb.sh
@@ -30,7 +30,6 @@ echo Building pandoc...
 cabal clean
 cabal install --force --reinstall --flags="embed_data_files make-pandoc-man-pages" . pandoc-citeproc
 
-make -B man/man1/pandoc.1
 # get pandoc-citeproc man page:
 PANDOC_CITEPROC_PATH=`cabal unpack -d make_binary_package.tmp.$$ pandoc-citeproc | awk '{print $3;}'`
 strip $SANDBOX/bin/pandoc
@@ -43,7 +42,7 @@ mkdir -p $DEST/share/doc/pandoc-citeproc
 find $DIST -type d | xargs chmod 755
 cp $SANDBOX/bin/pandoc $DEST/bin/
 cp $SANDBOX/bin/pandoc-citeproc $DEST/bin/
-cp man/man1/pandoc.1 $DEST/share/man/man1/pandoc.1
+$SANDBOX/bin/pandoc --print-default-data-file pandoc.1 > $DEST/share/man/man1/pandoc.1
 gzip -9 $DEST/share/man/man1/pandoc.1
 cp $PANDOC_CITEPROC_PATH/man/man1/pandoc-citeproc.1 $DEST/share/man/man1/
 gzip -9 $DEST/share/man/man1/pandoc-citeproc.1
diff --git a/make_osx_package.sh b/make_osx_package.sh
index da069565f..32314f967 100755
--- a/make_osx_package.sh
+++ b/make_osx_package.sh
@@ -27,7 +27,6 @@ cabal clean
 cabal install cpphs hsb2hs
 cabal install --ghc-options="-optl-mmacosx-version-min=10.6" --reinstall --flags="embed_data_files make-pandoc-man-pages" --ghc-options "-pgmP$CPPHS -optP--cpp" . pandoc-citeproc
 
-make -B man/man1/pandoc.1
 # get pandoc-citeproc man page:
 PANDOC_CITEPROC_PATH=`cabal unpack -d $DIST pandoc-citeproc | awk '{print $3;}'`
 
@@ -38,7 +37,7 @@ for f in pandoc pandoc-citeproc; do
   cp $SANDBOX/bin/$f $DEST/bin/;
 done
 cp $PANDOC_CITEPROC_PATH/man/man1/pandoc-citeproc.1 $DEST/share/man/man1/
-cp man/man1/pandoc.1 $DEST/share/man/man1/pandoc.1
+$SANDBOX/bin/pandoc --print-default-data-file pandoc.1 > $DEST/share/man/man1/pandoc.1
 
 chown -R $ME:staff $DIST
 
diff --git a/pandoc.cabal b/pandoc.cabal
index f7f743072..8d69358fb 100644
--- a/pandoc.cabal
+++ b/pandoc.cabal
@@ -106,6 +106,8 @@ Data-Files:
                  data/sample.lua
                  -- documentation
                  README, COPYRIGHT
+                 -- man page (generated by Setup.hs after build:)
+                 data/pandoc.1
 Extra-Source-Files:
                  -- documentation
                  INSTALL, BUGS, CONTRIBUTING.md, changelog
-- 
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