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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 17:04:52 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 17:04:52 +0000 |
commit | 5e03c718f4e7ff13cb6834eda737c269ebed02ad (patch) | |
tree | bfad3f5be123f000fdb03e26400050dece33d72f /m4/wget_manywarnings.m4 | |
parent | Initial commit. (diff) | |
download | wget-5e03c718f4e7ff13cb6834eda737c269ebed02ad.tar.xz wget-5e03c718f4e7ff13cb6834eda737c269ebed02ad.zip |
Adding upstream version 1.21.3.upstream/1.21.3upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'm4/wget_manywarnings.m4')
-rw-r--r-- | m4/wget_manywarnings.m4 | 92 |
1 files changed, 92 insertions, 0 deletions
diff --git a/m4/wget_manywarnings.m4 b/m4/wget_manywarnings.m4 new file mode 100644 index 0000000..3d281a1 --- /dev/null +++ b/m4/wget_manywarnings.m4 @@ -0,0 +1,92 @@ +# wget_manywarnings.m4 serial 1 +dnl Copyright (C) 2016-2022 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]) + + case $CC in + *gcc*) CCNAME="gcc";; + *clang*) CCNAME="clang";; + esac + + if test "$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" "$($CC $wget_WARN_CFLAGS -Q --help=warning,$wget_LANGUAGE|\ + awk '{ if (([$]2 == "[[disabled]]" || [$]2 == "")\ + && [$]1!~/=/ && [$]1~/^-W/ && [$]1!~/</ && [$]1!="-Wall") print [$]1 }') + + GCC_VERSION=$($CC -dumpversion | cut -f1 -d.) + if test $GCC_VERSION -ge 6; then + wget_WARN_CFLAGS=$wget_WARN_CFLAGS" -Warray-bounds=2 -Wnormalized=nfc -Wshift-overflow=2 -Wunused-const-variable=2" + fi + if test $GCC_VERSION -ge 7; then + wget_WARN_CFLAGS=$wget_WARN_CFLAGS" -Wformat-overflow=2 -Wformat-truncation=1 -Wstringop-overflow=2" + fi + + elif test "$CCNAME" = "clang"; then + # set all warn flags on + wget_WORD_SET([wget_WARN_CFLAGS], [$CFLAGS], ["-Weverything"]) + fi + + $1=$wget_WARN_CFLAGS + fi +]) |