AC_INIT(GNU Emacs, 27.0.50, address@hidden, , https://www.gnu.org/software/emacs/)
# This, $nw, is the list of warnings we disable.
nw=

nw="$nw -Wcast-align -Wcast-align=strict" # Emacs is tricky with pointers.
nw="$nw -Wduplicated-branches"    # Too many false alarms
nw="$nw -Wformat-overflow=2"      # False alarms due to GCC bug 80776
nw="$nw -Wsystem-headers"         # Don't let system headers trigger warnings
nw="$nw -Woverlength-strings"     # Not a problem these days
nw="$nw -Wformat-nonliteral"      # we do this a lot
nw="$nw -Wvla"                    # Emacs uses <vla.h>.
nw="$nw -Wunused-const-variable=2" # lisp.h declares const objects.
nw="$nw -Winline"                 # OK to ignore 'inline'
nw="$nw -Wstrict-overflow"        # OK to optimize assuming that
                                  # signed overflow has undefined behavior
nw="$nw -Wsync-nand"              # irrelevant here, and provokes ObjC warning
nw="$nw -Wunsafe-loop-optimizations" # OK to suppress unsafe optimizations
nw="$nw -Wbad-function-cast"      # These casts are no worse than others.
nw="$nw -Wabi"                    # Not useful, perceived as noise

# Emacs doesn't care about shadowing; see
# <https://lists.gnu.org/r/emacs-diffs/2011-11/msg00265.html>.
nw="$nw -Wshadow"

# Emacs's use of alloca inhibits protecting the stack.
nw="$nw -Wstack-protector"

# Emacs's use of __attribute__ ((cold)) causes false alarms with this option.
nw="$nw -Wsuggest-attribute=cold"

# Emacs's use of partly-const functions such as Fgnutls_available_p
# make this option problematic.
nw="$nw -Wsuggest-attribute=const"

# Emacs's use of partly-pure functions such as CHECK_TYPE make this
# option problematic.
nw="$nw -Wsuggest-attribute=pure"

# This part is merely for shortening the command line,
# since -Wall implies -Wswitch.
nw="$nw -Wswitch"

# This part is merely for shortening the command line,
# since -Wno-FOO needs to be added below regardless.
nw="$nw -Wmissing-field-initializers"
nw="$nw -Woverride-init"
nw="$nw -Wtype-limits"
nw="$nw -Wunused-parameter"

gl_MANYWARN_ALL_GCC([ws])
gl_MANYWARN_COMPLEMENT([ws], [$ws], [$nw])

ws="$ws -Wredundant-decls"     # Prefer this, as we don't use Bison.
ws="$ws -Wno-missing-field-initializers" # We need this one
ws="$ws -Wno-override-init"    # More trouble than it is worth
ws="$ws -Wno-sign-compare"     # Too many warnings for now
ws="$ws -Wno-type-limits"      # Too many warnings for now
ws="$ws -Wno-unused-parameter" # Too many warnings for now
ws="$ws -Wno-format-nonliteral"

dnl ws="$ws -Wbogus-warning"

gl_WARN_ADD_MULTIPLE([$ws])