libraries/blas: Add man pages.

Thanks to Mario Benincasa for the suggestion.

Signed-off-by: Kyle Guinn <elyk03@gmail.com>

libraries/blas/blas.SlackBuild

@@ -2,7 +2,7 @@
 
 # Slackware build script for BLAS
 
-# Copyright 2014 Kyle Guinn <elyk03@gmail.com>, USA
+# Copyright 2014-2015 Kyle Guinn <elyk03@gmail.com>, USA
 # All rights reserved.
 #
 # Redistribution and use of this script, with or without modification, is
@@ -25,7 +25,7 @@
 PRGNAM=blas
 SRCNAM=lapack
 VERSION=${VERSION:-3.5.0}
-BUILD=${BUILD:-1}
+BUILD=${BUILD:-2}
 TAG=${TAG:-_SBo}
 
 if [ -z "$ARCH" ]; then
@@ -120,6 +120,32 @@ sed -i \
   -e "/^Libs:/s/-L[^ ]*/-L\${libdir}/" \
   $PKG/usr/lib${LIBDIRSUFFIX}/pkgconfig/blas.pc
 
+# Generate man pages.  Also requires some fix-ups:
+# 1.  Replace "LAPACK" with "BLAS" in headers/footers.
+# 2.  Version is wrong.
+# 3.  Only generate on the BLAS sources.
+# 4.  Turn off some repetitive comments.
+# 5.  Turn off HAVE_DOT.  Graphs are unnecessary for this purpose.
+# 6.  Turn off MAN_LINKS.  See below.
+sed -i \
+  -e "s/^\(PROJECT_NAME *=\).*/\1 BLAS/" \
+  -e "s/^\(PROJECT_NUMBER *=\).*/\1 ${VERSION}/" \
+  -e "s/^\(INPUT *=\).*/\1 BLAS\/SRC/" \
+  -e "s/^\(REPEAT_BRIEF *=\).*/\1 NO/" \
+  -e "s/^\(HAVE_DOT *=\).*/\1 NO/" \
+  -e "s/^\(MAN_LINKS *=\).*/\1 NO/" \
+  DOCS/Doxyfile_man
+doxygen DOCS/Doxyfile_man
+# Doxygen generates manpages on a file-by-file basis (note the .f extensions).
+# We want a page for each function, not each file.  MAN_LINKS creates a page
+# for each function that just sources the page for the corresponding file.
+# This adds a lot of bloat.  Luckily, functions map 1:1 with files, so we can
+# rename .f.3 -> .3 to have the page named after the function.
+mkdir -p $PKG/usr/man/man3
+for i in DOCS/man/man3/*.f.3; do
+  gzip -9c $i > $PKG/usr/man/man3/$(basename $i .f.3).3.gz
+done
+
 mkdir -p $PKG/usr/doc/$PRGNAM-$VERSION
 cp -a $DOCS $PKG/usr/doc/$PRGNAM-$VERSION
 cat $CWD/$PRGNAM.SlackBuild > $PKG/usr/doc/$PRGNAM-$VERSION/$PRGNAM.SlackBuild