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* .gitignore: Add exception m4/wget_manywarnings.m4 * configure.ac: Remove manywarnings m4 code * m4/wget_manywarnings.m4: Add manywarnings m4 code here
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,89 @@ | ||
| # wget_manywarnings.m4 serial 1 | ||
| dnl Copyright (C) 2016 Free Software Foundation, Inc. | ||
| dnl This file is free software; the Free Software Foundation | ||
| dnl gives unlimited permission to copy and/or distribute it, | ||
| dnl with or without modifications, as long as this notice is preserved. | ||
|
|
||
| dnl From Tim Ruehsen | ||
|
|
||
| # wget_WORD_SET(RESULT, SET, WORDS) | ||
| # -------------------------------------------------- | ||
| # Add each word in WORDS to SET if not already there and store in RESULT. | ||
| # Words separated by whitespace. | ||
| AC_DEFUN([wget_WORD_SET], [ | ||
| ret=$2 | ||
| words=" $2 " | ||
| for word in $3; do | ||
| if test "${words#*" $word "}" = "$words"; then ret="$ret $word"; fi | ||
| done | ||
| $1=$ret | ||
| ]) | ||
|
|
||
| # wget_WORD_REMOVE(RESULT, SET, WORDS) | ||
| # -------------------------------------------------- | ||
| # Remove each word in WORDS from SET and store in RESULT. | ||
| # Words separated by whitespace. | ||
| AC_DEFUN([wget_WORD_REMOVE], [ | ||
| ret= | ||
| words=" $3 " | ||
| for word in $2; do | ||
| if test "${words#*" $word "}" = "$words"; then ret="$ret $word"; fi | ||
| done | ||
| $1=$ret | ||
| ]) | ||
|
|
||
| # wget_MANYWARNINGS(VARIABLE, LANGUAGE) | ||
| # ----------------------------- | ||
| # Add LANGUAGE related GCC warnings to VARIABLE. | ||
| # This only works for gcc >= 4.3. | ||
| AC_DEFUN([wget_MANYWARNINGS], [ | ||
| # | ||
| # check if manywarnings is requested | ||
| # | ||
| AC_ARG_ENABLE([manywarnings], | ||
| [AS_HELP_STRING([--enable-manywarnings], [Turn on extra compiler warnings (for developers)])], | ||
| [case $enableval in | ||
| yes|no) ;; | ||
| *) AC_MSG_ERROR([Bad value $enableval for --enable-manywarnings option]) ;; | ||
| esac | ||
| wget_manywarnings=$enableval | ||
| ], [ | ||
| test -f .manywarnings && wget_manywarnings=yes || wget_manywarnings=no | ||
| ] | ||
| ) | ||
| $1="" | ||
| if test "$wget_manywarnings" = yes; then | ||
| # AC_PROG_CC sets $GCC to 'yes' if compiler is gcc | ||
| # AC_REQUIRE([AC_PROG_CC]) | ||
| CCNAME=$($CC --version | { | ||
| IFS=' -' read name x _ | ||
| if test "$x" = clang; then | ||
| echo $x | ||
| else | ||
| echo $name | ||
| fi | ||
| }) | ||
| if test "$CCNAME" = "gcc"; then | ||
| test -n "$2" && wget_LANGUAGE=$2 || wget_LANGUAGE=C | ||
| # add -Wall -Wextra to reduce number of warn flags | ||
| wget_WORD_SET([wget_WARN_CFLAGS], [$CFLAGS], ["-Wall -Wextra -Wformat=2"]) | ||
| # collect all disabled warn flags in $WARN_CFLAGS | ||
| wget_WARN_CFLAGS=$wget_WARN_CFLAGS" "$(gcc $wget_WARN_CFLAGS -Q --help=warning,$wget_LANGUAGE|\ | ||
| awk '{ if (([$]2 == "[[disabled]]" || [$]2 == "") && [$]1!~/=/ && [$]1~/^-W/&& [$]1!="-Wall") print [$]1 }') | ||
| wget_WARN_CFLAGS=$wget_WARN_CFLAGS" -Warray-bounds=2 -Wnormalized=nfc -Wshift-overflow=2 -Wunused-const-variable=2" | ||
| elif test "$CCNAME" = "clang"; then | ||
| # set all warn flags on | ||
| wget_WORD_SET([wget_WARN_CFLAGS], [$CFLAGS], ["-Weverything"]) | ||
| fi | ||
| $1=$wget_WARN_CFLAGS | ||
| fi | ||
| ]) |