Date: Sun, 8 Mar 2015 22:39:02 +0000 (UTC) From: Dimitry Andric <dim@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-stable@freebsd.org, svn-src-stable-10@freebsd.org Subject: svn commit: r279793 - stable/10/share/mk Message-ID: <201503082239.t28Md2cH095651@svn.freebsd.org>
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Author: dim Date: Sun Mar 8 22:39:01 2015 New Revision: 279793 URL: https://svnweb.freebsd.org/changeset/base/279793 Log: MFC r265829 (by imp): Support, to the extent we generate proper command lines, compiling with clang 3.3. Useful for test building -current on a -stable system in individual directories. Potentially useful if we ever want to support, say, gcc 4.8 or 4.9's new warnings when building with an external toolchain (but such support not yet committed). Document the bsd.compiler.mk interface. MFC r266587 (by imp): Allow CC to not actually exist. During the ports INDEX run, all the Makefiles are evaluated without building things. In a normal build, the prerequisites would be built, and CC would be an actual thing. In an INDEX build, though, they don't exists. Redirect stderr to get rid of annoying messages, and assume that the compiler version is 0 if the actual compiler can't tell us. Do this in preference to guessing based on numbers because gcc410 might be 4.10, or 4.1.0 and without carefully crafted special knowledge we differentiate between them easily (also ming-gcc has no clues at all). Elsewhere, don't trust the compiler version if it is 0. MFC r273405 (by bapt): When using an external toolchain note that gcc 4.8+ supports C++11 Submitted by: imp MFC r275557 (by ngie): Fix typos in comments and wrap to <80 columns MFC r275588 (by ngie): ${CC} --version doesn't need to be queried if both COMPILER_TYPE and COMPILER_VERSION are known MFC r275589 (by ngie): The previous commit should have been a logical or not a logical "and" Pointyhat to: me Modified: stable/10/share/mk/bsd.compiler.mk stable/10/share/mk/bsd.sys.mk Directory Properties: stable/10/ (props changed) Modified: stable/10/share/mk/bsd.compiler.mk ============================================================================== --- stable/10/share/mk/bsd.compiler.mk Sun Mar 8 22:07:32 2015 (r279792) +++ stable/10/share/mk/bsd.compiler.mk Sun Mar 8 22:39:01 2015 (r279793) @@ -1,26 +1,52 @@ # $FreeBSD$ +# Setup variables for the compiler +# +# COMPILER_TYPE is the major type of compiler. Currently gcc and clang support +# automatic detection. Other compiler types can be shoe-horned in, but require +# explicit setting of the compiler type. The compiler type can also be set +# explicitly if, say, you install gcc as clang... +# +# COMPILER_VERSION is a numeric constant equal to: +# major * 10000 + minor * 100 + tiny +# It too can be overriden on the command line. When testing it, be sure to +# make sure that you are limiting the test to a specific compiler. Testing +# against 30300 for gcc likely isn't what you wanted (since versions of gcc +# prior to 4.2 likely have no prayer of working). +# +# COMPILER_FEATURES will contain one or more of the following, based on +# compiler support for that feature: +# +# - c++11 : supports full (or nearly full) C++11 programming environment. +# +# This file may be included multiple times, but only has effect the first time. +# + +.if !defined(COMPILER_TYPE) || !defined(COMPILER_VERSION) +_v!= ${CC} --version 2>/dev/null || echo 0.0.0 .if !defined(COMPILER_TYPE) -. if ${CC:T:Mgcc*} +. if ${CC:T:M*gcc*} COMPILER_TYPE:= gcc -. elif ${CC:T:Mclang} +. elif ${CC:T:M*clang*} COMPILER_TYPE:= clang -. else -_COMPILER_VERSION!= ${CC} --version -. if ${_COMPILER_VERSION:Mgcc} +. elif ${_v:Mgcc} COMPILER_TYPE:= gcc -. elif ${_COMPILER_VERSION:M\(GCC\)} +. elif ${_v:M\(GCC\)} COMPILER_TYPE:= gcc -. elif ${_COMPILER_VERSION:Mclang} +. elif ${_v:Mclang} COMPILER_TYPE:= clang -. else +. else .error Unable to determine compiler type for ${CC}. Consider setting COMPILER_TYPE. -. endif -. undef _COMPILER_VERSION . endif .endif +.if !defined(COMPILER_VERSION) +COMPILER_VERSION!=echo ${_v:M[1-9].[0-9]*} | awk -F. '{print $$1 * 10000 + $$2 * 100 + $$3;}' +.endif +.undef _v +.endif -.if ${COMPILER_TYPE} == "clang" +.if ${COMPILER_TYPE} == "clang" || \ + (${COMPILER_TYPE} == "gcc" && ${COMPILER_VERSION} >= 40800) COMPILER_FEATURES= c++11 .else COMPILER_FEATURES= Modified: stable/10/share/mk/bsd.sys.mk ============================================================================== --- stable/10/share/mk/bsd.sys.mk Sun Mar 8 22:07:32 2015 (r279792) +++ stable/10/share/mk/bsd.sys.mk Sun Mar 8 22:39:01 2015 (r279793) @@ -69,7 +69,10 @@ CWARNFLAGS+= -Wno-pointer-sign # is set to low values, these have to be disabled explicitly. .if ${COMPILER_TYPE} == "clang" && !defined(EARLY_BUILD) .if ${WARNS} <= 6 -CWARNFLAGS+= -Wno-empty-body -Wno-string-plus-int -Wno-unused-const-variable +CWARNFLAGS+= -Wno-empty-body -Wno-string-plus-int +.if ${COMPILER_VERSION} > 30300 +CWARNFLAGS+= -Wno-unused-const-variable +.endif .endif # WARNS <= 6 .if ${WARNS} <= 3 CWARNFLAGS+= -Wno-tautological-compare -Wno-unused-value\
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