commit:     ba23572ded4dbb8955f7638f0314b2522c9d2f4c
Author:     Sergei Trofimovich <slyfox <AT> gentoo <DOT> org>
AuthorDate: Wed Feb 27 23:16:52 2019 +0000
Commit:     Sergei Trofimovich <slyfox <AT> gentoo <DOT> org>
CommitDate: Wed Feb 27 23:21:13 2019 +0000
URL:        https://gitweb.gentoo.org/repo/gentoo.git/commit/?id=ba23572d

toolchain.eclass: avoid in_iuse in global scope

Another tiny step towards EAPI=6+ support.

'in_iuse' helper is not allowed to query IUSE (even though we set
all values locally in the eclass).

Use 'TC_FEATURES' array and 'tc_has_feature' helper for equivalent
purpose.

Signed-off-by: Sergei Trofimovich <slyfox <AT> gentoo.org>

 eclass/toolchain.eclass | 31 ++++++++++++++++++++-----------
 1 file changed, 20 insertions(+), 11 deletions(-)

diff --git a/eclass/toolchain.eclass b/eclass/toolchain.eclass
index 54cc513eb36..68cf63887f2 100644
--- a/eclass/toolchain.eclass
+++ b/eclass/toolchain.eclass
@@ -138,16 +138,23 @@ else
 fi
 IUSE="${GCC_EBUILD_TEST_FLAG} vanilla +nls +nptl"
 
+TC_FEATURES=()
+
+tc_has_feature() {
+       has "$1" "${TC_FEATURES[@]}"
+}
+
 if [[ ${PN} != "kgcc64" && ${PN} != gcc-* ]] ; then
-       IUSE+=" altivec debug +cxx +fortran"
+       IUSE+=" altivec debug +cxx +fortran" TC_FEATURES+=(fortran)
        [[ -n ${PIE_VER} ]] && IUSE+=" nopie"
        [[ -n ${HTB_VER} ]] && IUSE+=" boundschecking"
        [[ -n ${D_VER}   ]] && IUSE+=" d"
        [[ -n ${SPECS_VER} ]] && IUSE+=" nossp"
        tc_version_is_at_least 3 && IUSE+=" doc hardened multilib objc"
-       tc_version_is_between 3 7 && IUSE+=" awt gcj"
+       tc_version_is_between 3 7 && IUSE+=" awt gcj" TC_FEATURES+=(gcj)
        tc_version_is_at_least 3.3 && IUSE+=" pgo"
-       tc_version_is_at_least 4.0 && IUSE+=" objc-gc"
+       tc_version_is_at_least 4.0 &&
+               IUSE+=" objc-gc" TC_FEATURES+=(objc-gc)
        tc_version_is_between 4.0 4.9 && IUSE+=" mudflap"
        tc_version_is_at_least 4.1 && IUSE+=" libssp objc++"
        tc_version_is_at_least 4.2 && IUSE+=" +openmp"
@@ -156,13 +163,15 @@ if [[ ${PN} != "kgcc64" && ${PN} != gcc-* ]] ; then
        # Note: while <=gcc-4.7 also supported graphite, it required forked ppl
        # versions which we dropped.  Since graphite was also experimental in
        # the older versions, we don't want to bother supporting it.  #448024
-       tc_version_is_at_least 4.8 && IUSE+=" graphite +sanitize"
+       tc_version_is_at_least 4.8 &&
+               IUSE+=" graphite +sanitize" TC_FEATURES+=(graphite)
        tc_version_is_between 4.9 8 && IUSE+=" cilk"
        tc_version_is_at_least 4.9 && IUSE+=" +vtv"
        tc_version_is_at_least 5.0 && IUSE+=" jit mpx"
        tc_version_is_at_least 6.0 && IUSE+=" +pie +ssp +pch"
        # systemtap is a gentoo-specific switch: bug #654748
-       tc_version_is_at_least 8.0 && IUSE+=" systemtap"
+       tc_version_is_at_least 8.0 &&
+               IUSE+=" systemtap" TC_FEATURES+=(systemtap)
 fi
 
 SLOT="${GCC_CONFIG_VER}"
@@ -178,20 +187,20 @@ if tc_version_is_at_least 4 ; then
        GMP_MPFR_DEPS=">=dev-libs/gmp-4.3.2:0= >=dev-libs/mpfr-2.4.2:0="
        if tc_version_is_at_least 4.3 ; then
                RDEPEND+=" ${GMP_MPFR_DEPS}"
-       elif in_iuse fortran ; then
+       elif tc_has_feature fortran ; then
                RDEPEND+=" fortran? ( ${GMP_MPFR_DEPS} )"
        fi
 fi
 
 tc_version_is_at_least 4.5 && RDEPEND+=" >=dev-libs/mpc-0.8.1:0="
 
-if in_iuse objc-gc ; then
+if tc_has_feature objc-gc ; then
        if tc_version_is_at_least 7 ; then
                RDEPEND+=" objc-gc? ( >=dev-libs/boehm-gc-7.4.2 )"
        fi
 fi
 
-if in_iuse graphite ; then
+if tc_has_feature graphite ; then
        if tc_version_is_at_least 5.0 ; then
                RDEPEND+=" graphite? ( >=dev-libs/isl-0.14:0= )"
        elif tc_version_is_at_least 4.8 ; then
@@ -212,7 +221,7 @@ DEPEND="${RDEPEND}
                >=sys-devel/autogen-5.5.4
        )"
 
-if in_iuse gcj ; then
+if tc_has_feature gcj ; then
        GCJ_DEPS=">=media-libs/libart_lgpl-2.1"
        GCJ_GTK_DEPS="
                x11-base/xorg-proto
@@ -227,7 +236,7 @@ if in_iuse gcj ; then
        DEPEND+=" gcj? ( awt? ( ${GCJ_GTK_DEPS} ) ${GCJ_DEPS} )"
 fi
 
-if in_iuse systemtap ; then
+if tc_has_feature systemtap ; then
        # gcc needs sys/sdt.h headers on target
        DEPEND+=" systemtap? ( dev-util/systemtap )"
 fi
@@ -380,7 +389,7 @@ get_gcc_src_uri() {
        [[ -n ${D_VER} ]] && \
                GCC_SRC_URI+=" d? ( 
mirror://sourceforge/dgcc/gdc-${D_VER}-src.tar.bz2 )"
 
-       if in_iuse gcj ; then
+       if tc_has_feature gcj ; then
                if tc_version_is_at_least 4.5 ; then
                        GCC_SRC_URI+=" gcj? ( 
ftp://sourceware.org/pub/java/ecj-4.5.jar )"
                elif tc_version_is_at_least 4.3 ; then

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