1: 2# remove extra #include's 3 4# pgcompinclude must be run before and after pgrminclude. It must be 5# run before because we don't want include dependencies to leak into 6# the C program files, and after because removal of includes from headers 7# can cause new include unfulfilled dependencies. 8# 9# Limitations: 2011-09-24 10# 11# Pgrminclude, when processing header files, can cause includes to be 12# removed that require the addition of new illogical header files. 13# This is dependent on what order the header files are processed. 14# Manual review of header files now needed to satisfy pgcompinclude is 15# required. 16# 17# C program files that have #ifdef blocks that contain code that cannot 18# be compiled on the platform from which pgrminclude is run cannot be 19# processed, and are skipped. 20 21: ${CC:=cc} 22: ${PGSRC:=src} 23 24if ! pgdefine 25then echo "pgdefine must be in your PATH" 1>&2 26 exit 1 27fi 28 29trap "rm -f /tmp/$$.c /tmp/$$.o /tmp/$$ /tmp/$$a /tmp/$$b" 0 1 2 3 15 30 31if [ "$1" = "-v" ] 32then VERBOSE="Y" 33else VERBOSE="" 34fi 35 36verbose_output() { 37 if [ "$VERBOSE" ] 38 then cat /tmp/$$ 39 cat /tmp/$$b 40 nl /tmp/$$.c 41 fi 42} 43 44process_includes_in_file() { 45 # loop through all includes mentioned in the file 46 cat "$FILE" | 47 grep "^#include\>" | 48 grep -v '/\* *pgrminclude *ignore *\*/' | 49 sed 's/^#include[ ]*[<"]\([^>"]*\).*$/\1/g' | 50 grep -v 'parser/kwlist\.h' | 51 grep -v '\.c$' | 52 while read INCLUDE 53 do if [ "$VERBOSE" ] 54 then echo "checking $FILE $INCLUDE" 55 fi 56 compile_file 57 done 58} 59 60compile_file() { 61 [ "$INCLUDE" -a -s /usr/include/"$INCLUDE" ] && continue 62 [ "$INCLUDE" = "postgres.h" ] && continue 63 [ "$INCLUDE" = "postgres_fe.h" ] && continue 64 [ "$INCLUDE" = "pg_config.h" ] && continue 65 [ "$INCLUDE" = "c.h" ] && continue 66 # Stringify macros will expand undefined identifiers, so skip files that use it 67 egrep -q '\<(CppAsString2?|CppConcat)\>' "$FILE" && continue 68 69 # preserve configure-specific includes 70 # these includes are surrounded by #ifdef's 71 grep -B1 '^#include[ ][ ]*[<"]'"$INCLUDE"'[>"]' "$FILE" | 72 egrep -q '^#if|^#else|^#elif' && continue 73 grep -A1 '^#include[ ][ ]*[<"]'"$INCLUDE"'[>"]' "$FILE" | 74 egrep -q '^#else|^#elif|^#endif' && continue 75 76 # Remove all #if and #ifdef blocks because the blocks 77 # might contain code that is not compiled on this platform. 78 cat "$FILE" | 79 grep -v "^#if" | 80 grep -v "^#else" | 81 grep -v "^#elif" | 82 grep -v "^#endif" | 83 # with #if blocks gone, now undef #defines to avoid redefine 84 # warning and failure 85 sed 's/#define[ ][ ]*\([A-Za-z0-9_]*\).*$/#undef \1\n&/' >/tmp/$$a 86 87 # set up initial file contents 88 grep -v '^#include[ ][ ]*[<"]'"$INCLUDE"'[>"]' \ 89 /tmp/$$a >/tmp/$$b 90 91 if [ "$IS_INCLUDE" = "Y" ] 92 then echo "#include \"postgres.h\"" >/tmp/$$.c 93 # suppress fcinfo errors 94 echo "struct {Datum arg[1];} *fcinfo;" >>/tmp/$$.c 95 else >/tmp/$$.c 96 fi 97 98 echo "#include \"/tmp/$$b\"" >>/tmp/$$.c 99 100 if [ "$IS_INCLUDE" = "Y" ] 101 then echo "Datum include_test(void);" >>/tmp/$$.c 102 echo "Datum include_test() {" >>/tmp/$$.c 103 pgdefine "$FILE" >>/tmp/$$.c 104 echo "return (Datum)0;" >>/tmp/$$.c 105 echo "}" >>/tmp/$$.c 106 fi 107 108 # Use -O1 to get warnings only generated by optimization, 109 # but -O2 is too slow. 110 $CC -fsyntax-only -Werror -Wall -Wmissing-prototypes \ 111 -Wmissing-declarations -I$PGSRC/include -I$PGSRC/backend \ 112 -I$PGSRC/interfaces/libpq -I`dirname $FILE` $CFLAGS -O1 -c /tmp/$$.c \ 113 -o /tmp/$$.o >/tmp/$$ 2>&1 114 if [ "$?" -eq 0 ] 115 then [ "$INCLUDE" -o "$VERBOSE" ] && echo "$FILE $INCLUDE" 116 grep -v '^#include[ ][ ]*[<"]'"$INCLUDE"'[>"]' \ 117 "$FILE" >/tmp/$$b 118 mv /tmp/$$b "$FILE" 119 return 0 120 else return 1 121 fi 122} 123 124# Process include files first because they can affect the compilation 125# of *.c files. 126(find . \( -name .git -a -prune \) -o -type f -name '*.h' -print | sort; 127 find . \( -name .git -a -prune \) -o -type f -name '*.c' -print | sort) | 128grep -v '/postgres.h$' | 129grep -v '/postgres_fe.h$' | 130grep -v '/pg_config.h$' | 131grep -v '\./c.h$' | 132while read FILE 133do 134 if [ `expr $FILE : '.*\.h$'` -ne 0 ] 135 then IS_INCLUDE="Y" 136 else IS_INCLUDE="N" 137 fi 138 139 # Can we compile the file with all existing includes? 140 INCLUDE="" 141 compile_file 142 # If the file can't be compiled on its own, there is no sense 143 # trying to remove the include files. 144 if [ "$?" -ne 0 ] 145 then echo "cannot compile $FILE with existing includes" 146 verbose_output 147 else process_includes_in_file 148 fi 149done 150