diff options
| -rw-r--r-- | eclass/toolchain-funcs.eclass | 74 |
1 files changed, 60 insertions, 14 deletions
diff --git a/eclass/toolchain-funcs.eclass b/eclass/toolchain-funcs.eclass index d9a37c91a8ef..3fa32820151c 100644 --- a/eclass/toolchain-funcs.eclass +++ b/eclass/toolchain-funcs.eclass @@ -217,6 +217,65 @@ tc-cpp-is-true() { [[ ${RESULT} == true ]] } +# @FUNCTION: tc-detect-is-softfloat +# @RETURN: +# Shell true if (positive or negative) detection was possible, shell +# false otherwise. Also outputs a string when detection succeeds, see +# tc-is-softfloat for the possible values. +# @DESCRIPTION: +# Detect whether the CTARGET (or CHOST) toolchain is a softfloat based +# one by examining the toolchain's output, if possible. +tc-detect-is-softfloat() { + # If fetching CPP falls back to the default (gcc -E) then fail + # detection as this may not be the correct toolchain. + [[ $(tc-getTARGET_CPP) == "gcc -E" ]] && return 1 + + case ${CTARGET:-${CHOST}} in + # arm-unknown-linux-gnueabi is ambiguous. We used to treat it as + # hardfloat but we now treat it as softfloat like most everyone + # else. Check existing toolchains to respect existing systems. + arm*) + if tc-cpp-is-true "defined(__ARM_PCS_VFP)"; then + echo "no" + else + # Confusingly __SOFTFP__ is defined only when + # -mfloat-abi is soft, not softfp. + if tc-cpp-is-true "defined(__SOFTFP__)"; then + echo "yes" + else + echo "softfp" + fi + fi + + return 0 ;; + *) + return 1 ;; + esac +} + +# @FUNCTION: tc-tuple-is-softfloat +# @RETURN: See tc-is-softfloat for the possible values. +# @DESCRIPTION: +# Determine whether the CTARGET (or CHOST) toolchain is a softfloat +# based one solely from the tuple. +tc-tuple-is-softfloat() { + local CTARGET=${CTARGET:-${CHOST}} + case ${CTARGET//_/-} in + bfin*|h8300*) + echo "only" ;; + *-softfloat-*) + echo "yes" ;; + *-softfp-*) + echo "softfp" ;; + arm*-hardfloat-*|arm*eabihf) + echo "no" ;; + arm*) + echo "yes" ;; + *) + echo "no" ;; + esac +} + # @FUNCTION: tc-is-softfloat # @DESCRIPTION: # See if this toolchain is a softfloat based one. @@ -231,20 +290,7 @@ tc-cpp-is-true() { # softfloat flags in the case where support is optional, but # rejects softfloat flags where the target always lacks an fpu. tc-is-softfloat() { - local CTARGET=${CTARGET:-${CHOST}} - case ${CTARGET} in - bfin*|h8300*) - echo "only" ;; - *) - if [[ ${CTARGET//_/-} == *-softfloat-* ]] ; then - echo "yes" - elif [[ ${CTARGET//_/-} == *-softfp-* ]] ; then - echo "softfp" - else - echo "no" - fi - ;; - esac + tc-detect-is-softfloat || tc-tuple-is-softfloat } # @FUNCTION: tc-is-static-only |