1# $FreeBSD$ 2# 3# This file contains common settings used for building FreeBSD 4# sources. 5 6# Enable various levels of compiler warning checks. These may be 7# overridden (e.g. if using a non-gcc compiler) by defining NO_WARNS. 8 9# for GCC: http://gcc.gnu.org/onlinedocs/gcc-3.0.4/gcc_3.html#IDX143 10 11CSTD ?= 12.if ${CSTD} != "" 13. if ${CSTD} == "k&r" 14CFLAGS += -traditional 15. elif ${CSTD} == "c89" || ${CSTD} == "c90" 16CFLAGS += -std=iso9899:1990 17. elif ${CSTD} == "c94" || ${CSTD} == "c95" 18CFLAGS += -std=iso9899:199409 19. elif ${CSTD} == "c99" 20CFLAGS += -std=iso9899:1999 21. else 22CFLAGS += -std=${CSTD} 23. endif 24.endif 25 26.if !defined(NO_WARNS) 27. if defined(WARNS) 28. if ${WARNS} > 0 29CFLAGS += -Wsystem-headers 30. if !defined(NO_WERROR) 31CFLAGS += -Werror 32. endif 33. endif 34. if ${WARNS} > 1 35CFLAGS += -Wall -Wno-format-y2k 36. endif 37. if ${WARNS} > 2 38CFLAGS += -W -Wstrict-prototypes -Wmissing-prototypes -Wpointer-arith 39. endif 40. if ${WARNS} > 3 41CFLAGS += -Wreturn-type -Wcast-qual -Wwrite-strings -Wswitch -Wshadow -Wcast-align 42. endif 43# XXX: the warning that was here became problematic. 44#. if ${WARNS} > 4 45# BDECFLAGS 46. if ${WARNS} > 5 47. if ${CSTD} != "" 48CFLAGS += -pedantic 49. endif 50CFLAGS += -Wbad-function-cast -Wchar-subscripts -Winline -Wnested-externs -Wredundant-decls 51. endif 52. if ${WARNS} > 1 && ${WARNS} < 5 53# XXX Delete -Wuninitialized by default for now -- the compiler doesn't 54# XXX always get it right. 55CFLAGS += -Wno-uninitialized 56. endif 57. endif 58 59. if defined(FORMAT_AUDIT) 60WFORMAT = 1 61. endif 62. if defined(WFORMAT) 63. if ${WFORMAT} > 0 64#CFLAGS += -Wformat-nonliteral -Wformat-security -Wno-format-extra-args 65CFLAGS += -Wformat=2 -Wno-format-extra-args 66. if !defined(NO_WERROR) 67CFLAGS += -Werror 68. endif 69. endif 70. endif 71.endif 72 73# Allow user-specified additional warning flags 74CFLAGS += ${CWARNFLAGS} 75