toolchain.eclass: clarify use case of GCC_A_FAKEIT

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

diff --git a/eclass/toolchain.eclass b/eclass/toolchain.eclass
index d2de666120eb68e5d678172b0f7d0630e8a5cf2a..d26a12a024bef568e734cd37c614783a7be61980 100644 (file)
--- a/eclass/toolchain.eclass
+++ b/eclass/toolchain.eclass
@@ -454,6 +454,8 @@ gcc_quick_unpack() {
        export HTB_GCC_VER=${HTB_GCC_VER:-${GCC_RELEASE_VER}}
        export SPECS_GCC_VER=${SPECS_GCC_VER:-${GCC_RELEASE_VER}}
 
+       # Injection point for more tarballs. dev-lang/gnat-gpl uses
+       # 'GCC_A_FAKEIT' to specify it's own source and binary tarballs.
        if [[ -n ${GCC_A_FAKEIT} ]] ; then
                unpack ${GCC_A_FAKEIT}
        elif [[ -n ${PRERELEASE} ]] ; then