1 files changed, 149 insertions, 0 deletions
diff --git a/src/tools/pginclude/pgrminclude b/src/tools/pginclude/pgrminclude
new file mode 100755
index 0000000..7cbd2e7
--- /dev/null
+++ b/src/tools/pginclude/pgrminclude
@@ -0,0 +1,149 @@
+:
+# remove extra #include's
+
+# pgcompinclude must be run before and after pgrminclude.  It must be
+# run before  because we don't want include dependencies to leak into
+# the C program files, and after because removal of includes from headers
+# can cause new include unfulfilled dependencies.
+#
+# Limitations:  2011-09-24
+#
+# Pgrminclude, when processing header files, can cause includes to be
+# removed that require the addition of new illogical header files.
+# This is dependent on what order the header files are processed.
+# Manual review of header files now needed to satisfy pgcompinclude is
+# required.
+#
+# C program files that have #ifdef blocks that contain code that cannot
+# be compiled on the platform from which pgrminclude is run cannot be
+# processed, and are skipped.
+
+: ${CC:=cc}
+: ${PGSRC:=src}
+
+if ! pgdefine
+then	echo "pgdefine must be in your PATH" 1>&2
+	exit 1
+fi
+
+trap "rm -f /tmp/$$.c /tmp/$$.o /tmp/$$ /tmp/$$a /tmp/$$b" 0 1 2 3 15
+
+if [ "$1" = "-v" ]
+then	VERBOSE="Y"
+else	VERBOSE=""
+fi
+
+verbose_output() {
+	if [ "$VERBOSE" ]
+	then	cat /tmp/$$
+		cat /tmp/$$b
+		nl /tmp/$$.c
+	fi
+}
+
+process_includes_in_file() {
+	# loop through all includes mentioned in the file
+	cat "$FILE" |
+	grep "^#include\>" |
+	grep -v '/\* *pgrminclude  *ignore *\*/' |
+	sed 's/^#include[ 	]*[<"]\([^>"]*\).*$/\1/g' |
+	grep -v 'parser/kwlist\.h' |
+	grep -v '\.c$' |
+	while read INCLUDE
+	do	if [ "$VERBOSE" ]
+		then	echo "checking $FILE $INCLUDE"
+		fi
+		compile_file
+	done
+}
+
+compile_file() {
+	[ "$INCLUDE" -a -s /usr/include/"$INCLUDE" ] && continue
+	[ "$INCLUDE" = "postgres.h" ] && continue
+	[ "$INCLUDE" = "postgres_fe.h" ] && continue
+	[ "$INCLUDE" = "pg_config.h" ] && continue
+	[ "$INCLUDE" = "c.h" ] && continue
+	# Stringify macros will expand undefined identifiers, so skip files that use it
+	egrep -q '\<(CppAsString2?|CppConcat)\>' "$FILE" && continue
+
+	# preserve configure-specific includes
+	# these includes are surrounded by #ifdef's
+	grep -B1 '^#include[ 	][ 	]*[<"]'"$INCLUDE"'[>"]' "$FILE" |
+	     egrep -q '^#if|^#else|^#elif' && continue
+	grep -A1 '^#include[ 	][ 	]*[<"]'"$INCLUDE"'[>"]' "$FILE" |
+	     egrep -q '^#else|^#elif|^#endif' && continue
+
+        # Remove all #if and #ifdef blocks because the blocks
+	# might contain code that is not compiled on this platform.
+	cat "$FILE" |
+	grep -v "^#if" |
+	grep -v "^#else" |
+	grep -v "^#elif" |
+	grep -v "^#endif" |
+	# with #if blocks gone, now undef #defines to avoid redefine
+	# warning and failure
+	sed 's/#define[ 	][ 	]*\([A-Za-z0-9_]*\).*$/#undef \1\n&/' >/tmp/$$a
+
+	# set up initial file contents
+	grep -v '^#include[ 	][ 	]*[<"]'"$INCLUDE"'[>"]' \
+		/tmp/$$a >/tmp/$$b
+
+	if [ "$IS_INCLUDE" = "Y" ]
+	then	echo "#include \"postgres.h\"" >/tmp/$$.c
+		# suppress fcinfo errors
+		echo "struct {Datum       arg[1];} *fcinfo;" >>/tmp/$$.c
+	else	>/tmp/$$.c
+	fi
+
+	echo "#include \"/tmp/$$b\"" >>/tmp/$$.c
+
+	if [ "$IS_INCLUDE" = "Y" ]
+	then	echo "Datum include_test(void);" >>/tmp/$$.c
+		echo "Datum include_test() {" >>/tmp/$$.c
+		pgdefine "$FILE" >>/tmp/$$.c
+		echo "return (Datum)0;" >>/tmp/$$.c
+		echo "}" >>/tmp/$$.c
+	fi
+
+	# Use -O1 to get warnings only generated by optimization,
+	# but -O2 is too slow.
+	$CC -fsyntax-only -Werror -Wall -Wmissing-prototypes \
+		-Wmissing-declarations -I$PGSRC/include -I$PGSRC/backend \
+		-I$PGSRC/interfaces/libpq -I`dirname $FILE` $CFLAGS -O1 -c /tmp/$$.c \
+		-o /tmp/$$.o >/tmp/$$ 2>&1
+	if [ "$?" -eq 0 ]
+	then	[ "$INCLUDE" -o "$VERBOSE" ] && echo "$FILE $INCLUDE"
+		grep -v '^#include[ 	][ 	]*[<"]'"$INCLUDE"'[>"]' \
+			"$FILE" >/tmp/$$b
+		mv /tmp/$$b "$FILE"
+		return 0
+	else	return 1
+	fi
+}
+
+# Process include files first because they can affect the compilation
+# of *.c files.
+(find . \( -name .git -a -prune \) -o -type f -name '*.h' -print | sort;
+ find . \( -name .git -a -prune \) -o -type f -name '*.c' -print | sort) |
+grep -v '/postgres.h$' |
+grep -v '/postgres_fe.h$' |
+grep -v '/pg_config.h$' |
+grep -v '\./c.h$' |
+while read FILE
+do
+	if [ `expr $FILE : '.*\.h$'` -ne 0 ]
+	then	IS_INCLUDE="Y"
+	else	IS_INCLUDE="N"
+	fi
+
+	# Can we compile the file with all existing includes?
+	INCLUDE=""
+	compile_file
+	# If the file can't be compiled on its own, there is no sense
+	# trying to remove the include files.
+	if [ "$?" -ne 0 ]
+	then	echo "cannot compile $FILE with existing includes"
+		verbose_output
+	else	process_includes_in_file
+	fi
+done