abinfo "Appending -std=gnu99 to fix build with GCC >= 15 ..."
# FIXME:
# In file included from /var/cache/acbs/build/acbs.fjphx8aj/plotutils-2.6/lib/../include/libcommon.h:23,
#                  from /var/cache/acbs/build/acbs.fjphx8aj/plotutils-2.6/lib/display.c:26:
# /var/cache/acbs/build/acbs.fjphx8aj/plotutils-2.6/lib/../include/sys-defines.h:258:16: error: cannot use keyword ‘false’ as enumeration constant
#   258 | typedef enum { false = 0, true = 1 } bool;
#       |                ^~~~~
export CFLAGS="$CFLAGS -std=gnu99"
