# $FreeBSD$ # # This file contains common settings used for building FreeBSD # sources. # Enable various levels of compiler warning checks. These may be # overridden (e.g. if using a non-gcc compiler) by defining MK_WARNS=no. # for GCC: http://gcc.gnu.org/onlinedocs/gcc-4.2.1/gcc/Warning-Options.html .include # the default is gnu99 for now CSTD?= gnu99 .if ${CSTD} == "k&r" CFLAGS+= -traditional .elif ${CSTD} == "c89" || ${CSTD} == "c90" CFLAGS+= -std=iso9899:1990 .elif ${CSTD} == "c94" || ${CSTD} == "c95" CFLAGS+= -std=iso9899:199409 .elif ${CSTD} == "c99" CFLAGS+= -std=iso9899:1999 .else # CSTD CFLAGS+= -std=${CSTD} .endif # CSTD # -pedantic is problematic because it also imposes namespace restrictions #CFLAGS+= -pedantic .if defined(WARNS) .if ${WARNS} >= 1 CWARNFLAGS+= -Wsystem-headers .if !defined(NO_WERROR) && !defined(NO_WERROR.${COMPILER_TYPE}) CWARNFLAGS+= -Werror .endif # !NO_WERROR && !NO_WERROR.${COMPILER_TYPE} .endif # WARNS >= 1 .if ${WARNS} >= 2 CWARNFLAGS+= -Wall -Wno-format-y2k .endif # WARNS >= 2 .if ${WARNS} >= 3 CWARNFLAGS+= -W -Wno-unused-parameter -Wstrict-prototypes\ -Wmissing-prototypes -Wpointer-arith .endif # WARNS >= 3 .if ${WARNS} >= 4 CWARNFLAGS+= -Wreturn-type -Wcast-qual -Wwrite-strings -Wswitch -Wshadow\ -Wunused-parameter .if !defined(NO_WCAST_ALIGN) && !defined(NO_WCAST_ALIGN.${COMPILER_TYPE}) CWARNFLAGS+= -Wcast-align .endif # !NO_WCAST_ALIGN !NO_WCAST_ALIGN.${COMPILER_TYPE} .endif # WARNS >= 4 # BDECFLAGS .if ${WARNS} >= 6 CWARNFLAGS+= -Wchar-subscripts -Winline -Wnested-externs -Wredundant-decls\ -Wold-style-definition .if !defined(NO_WMISSING_VARIABLE_DECLARATIONS) CWARNFLAGS.clang+= -Wmissing-variable-declarations .endif .if !defined(NO_WTHREAD_SAFETY) CWARNFLAGS.clang+= -Wthread-safety .endif .endif # WARNS >= 6 .if ${WARNS} >= 2 && ${WARNS} <= 4 # XXX Delete -Wuninitialized by default for now -- the compiler doesn't # XXX always get it right. CWARNFLAGS+= -Wno-uninitialized .endif # WARNS >=2 && WARNS <= 4 CWARNFLAGS+= -Wno-pointer-sign # Clang has more warnings enabled by default, and when using -Wall, so if WARNS # is set to low values, these have to be disabled explicitly. .if ${WARNS} <= 6 CWARNFLAGS.clang+= -Wno-empty-body -Wno-string-plus-int .if ${COMPILER_TYPE} == "clang" && ${COMPILER_VERSION} >= 30400 CWARNFLAGS.clang+= -Wno-unused-const-variable .endif .endif # WARNS <= 6 .if ${WARNS} <= 3 CWARNFLAGS.clang+= -Wno-tautological-compare -Wno-unused-value\ -Wno-parentheses-equality -Wno-unused-function -Wno-enum-conversion .if ${COMPILER_TYPE} == "clang" && ${COMPILER_VERSION} >= 30600 CWARNFLAGS.clang+= -Wno-unused-local-typedef .endif .endif # WARNS <= 3 .if ${WARNS} <= 2 CWARNFLAGS.clang+= -Wno-switch -Wno-switch-enum -Wno-knr-promoted-parameter .endif # WARNS <= 2 .if ${WARNS} <= 1 CWARNFLAGS.clang+= -Wno-parentheses .endif # WARNS <= 1 .if defined(NO_WARRAY_BOUNDS) CWARNFLAGS.clang+= -Wno-array-bounds .endif # NO_WARRAY_BOUNDS .endif # WARNS .if defined(FORMAT_AUDIT) WFORMAT= 1 .endif # FORMAT_AUDIT .if defined(WFORMAT) .if ${WFORMAT} > 0 #CWARNFLAGS+= -Wformat-nonliteral -Wformat-security -Wno-format-extra-args CWARNFLAGS+= -Wformat=2 -Wno-format-extra-args .if ${WARNS} <= 3 CWARNFLAGS.clang+= -Wno-format-nonliteral .endif # WARNS <= 3 .if !defined(NO_WERROR) && !defined(NO_WERROR.${COMPILER_TYPE}) CWARNFLAGS+= -Werror .endif # !NO_WERROR && !NO_WERROR.${COMPILER_TYPE} .endif # WFORMAT > 0 .endif # WFORMAT .if defined(NO_WFORMAT) || defined(NO_WFORMAT.${COMPILER_TYPE}) CWARNFLAGS+= -Wno-format .endif # NO_WFORMAT || NO_WFORMAT.${COMPILER_TYPE} # How to handle FreeBSD custom printf format specifiers. .if ${COMPILER_TYPE} == "clang" && ${COMPILER_VERSION} >= 30600 FORMAT_EXTENSIONS= -D__printf__=__freebsd_kprintf__ .else FORMAT_EXTENSIONS= -fformat-extensions .endif .if defined(IGNORE_PRAGMA) CWARNFLAGS+= -Wno-unknown-pragmas .endif # IGNORE_PRAGMA # We need this conditional because many places that use it # only enable it for some files with CLFAGS.$FILE+=${CLANG_NO_IAS}. # unconditionally, and can't easily use the CFLAGS.clang= # mechanism. .if ${COMPILER_TYPE} == "clang" CLANG_NO_IAS= -no-integrated-as .endif CLANG_OPT_SMALL= -mstack-alignment=8 -mllvm -inline-threshold=3\ -mllvm -simplifycfg-dup-ret .if ${COMPILER_VERSION} >= 30500 && ${COMPILER_VERSION} < 30700 CLANG_OPT_SMALL+= -mllvm -enable-gvn=false .else CLANG_OPT_SMALL+= -mllvm -enable-load-pre=false .endif CFLAGS.clang+= -Qunused-arguments .if ${MACHINE_CPUARCH} == "sparc64" # Don't emit .cfi directives, since we must use GNU as on sparc64, for now. CFLAGS.clang+= -fno-dwarf2-cfi-asm .endif # SPARC64 # The libc++ headers use c++11 extensions. These are normally silenced because # they are treated as system headers, but we explicitly disable that warning # suppression when building the base system to catch bugs in our headers. # Eventually we'll want to start building the base system C++ code as C++11, # but not yet. CXXFLAGS.clang+= -Wno-c++11-extensions .if ${MK_SSP} != "no" && \ ${MACHINE_CPUARCH} != "arm" && ${MACHINE_CPUARCH} != "mips" .if (${COMPILER_TYPE} == "clang" && ${COMPILER_VERSION} >= 30500) || \ (${COMPILER_TYPE} == "gcc" && \ (${COMPILER_VERSION} == 40201 || ${COMPILER_VERSION} >= 40900)) # Don't use -Wstack-protector as it breaks world with -Werror. SSP_CFLAGS?= -fstack-protector-strong .else SSP_CFLAGS?= -fstack-protector .endif CFLAGS+= ${SSP_CFLAGS} .endif # SSP && !ARM && !MIPS # Allow user-specified additional warning flags, plus compiler specific flag overrides. # Unless we've overriden this... .if ${MK_WARNS} != "no" CFLAGS+= ${CWARNFLAGS} ${CWARNFLAGS.${COMPILER_TYPE}} .endif CFLAGS+= ${CFLAGS.${COMPILER_TYPE}} CXXFLAGS+= ${CXXFLAGS.${COMPILER_TYPE}} # Tell bmake not to mistake standard targets for things to be searched for # or expect to ever be up-to-date. PHONY_NOTMAIN = afterdepend afterinstall all beforedepend beforeinstall \ beforelinking build build-tools buildconfig buildfiles \ buildincludes checkdpadd clean cleandepend cleandir cleanobj \ configure depend dependall distclean distribute exe \ files html includes install installconfig installfiles \ installincludes lint obj objlink objs objwarn realall \ realdepend realinstall regress subdir-all subdir-depend \ subdir-install tags whereobj # we don't want ${PROG} to be PHONY .PHONY: ${PHONY_NOTMAIN:N${PROG:U}} .NOTMAIN: ${PHONY_NOTMAIN:Nall} .if ${MK_STAGING} != "no" .if defined(_SKIP_BUILD) || (!make(all) && !make(clean*)) _SKIP_STAGING?= yes .endif .if ${_SKIP_STAGING:Uno} == "yes" staging stage_libs stage_files stage_as stage_links stage_symlinks: .else # allow targets like beforeinstall to be leveraged DESTDIR= ${STAGE_OBJTOP} .if commands(beforeinstall) .if !empty(_LIBS) || (${MK_STAGING_PROG} != "no" && !defined(INTERNALPROG)) staging: beforeinstall .endif .endif # normally only libs and includes are staged .if ${MK_STAGING_PROG} != "no" && !defined(INTERNALPROG) STAGE_DIR.prog= ${STAGE_OBJTOP}${BINDIR} .if !empty(PROG) || !empty(PROGS) .if defined(PROGNAME) STAGE_AS_SETS+= prog STAGE_AS_${PROG}= ${PROGNAME} stage_as.prog: ${PROG} .else STAGE_SETS+= prog stage_files.prog: ${PROG} STAGE_TARGETS+= stage_files .endif .endif .endif .if !empty(_LIBS) && !defined(INTERNALLIB) .if defined(SHLIBDIR) && ${SHLIBDIR} != ${LIBDIR} && ${_LIBS:Uno:M*.so.*} != "" STAGE_SETS+= shlib STAGE_DIR.shlib= ${STAGE_OBJTOP}${SHLIBDIR} STAGE_FILES.shlib+= ${_LIBS:M*.so.*} stage_files.shlib: ${_LIBS:M*.so.*} .endif .if defined(SHLIB_LINK) && commands(${SHLIB_LINK:R}.ld) _LDSCRIPTROOT?= ${STAGE_OBJTOP} STAGE_AS_SETS+= ldscript STAGE_AS.ldscript+= ${SHLIB_LINK:R}.ld stage_as.ldscript: ${SHLIB_LINK:R}.ld STAGE_DIR.ldscript = ${STAGE_LIBDIR} STAGE_AS_${SHLIB_LINK:R}.ld:= ${SHLIB_LINK} NO_SHLIB_LINKS= .endif .if target(stage_files.shlib) stage_libs: ${_LIBS} .if defined(DEBUG_FLAGS) && target(${SHLIB_NAME}.symbols) stage_files.shlib: ${SHLIB_NAME}.symbols .endif .else stage_libs: ${_LIBS} .endif .if defined(SHLIB_NAME) && defined(DEBUG_FLAGS) && target(${SHLIB_NAME}.symbols) stage_libs: ${SHLIB_NAME}.symbols .endif .endif .if !empty(INCS) || !empty(INCSGROUPS) && target(buildincludes) .if !defined(NO_BEFOREBUILD_INCLUDES) stage_includes: buildincludes beforebuild: stage_includes .endif .endif .for t in stage_libs stage_files stage_as .if target($t) STAGE_TARGETS+= $t .endif .endfor .if !empty(STAGE_AS_SETS) STAGE_TARGETS+= stage_as .endif .if !empty(_LIBS) || (${MK_STAGING_PROG} != "no" && !defined(INTERNALPROG)) .if !empty(LINKS) STAGE_TARGETS+= stage_links .if ${MAKE_VERSION} < 20131001 stage_links.links: ${_LIBS} ${PROG} .endif STAGE_SETS+= links STAGE_LINKS.links= ${LINKS} .endif .if !empty(SYMLINKS) STAGE_TARGETS+= stage_symlinks STAGE_SETS+= links STAGE_SYMLINKS.links= ${SYMLINKS} .endif .endif .include .endif .endif