Merge pull request #393 from edkimmel/harfbuzz_reset_env

Harfbuzz: clear environment before building ragel

Author: springmeyer

scripts/harfbuzz/1.4.4-ft/script.sh

@@ -21,8 +21,12 @@ function mason_prepare_compile {
     FREETYPE_VERSION="2.7.1"
     ${MASON_DIR}/mason install freetype ${FREETYPE_VERSION}
     MASON_FREETYPE=$(${MASON_DIR}/mason prefix freetype ${FREETYPE_VERSION})
-    MASON_PLATFORM= ${MASON_DIR}/mason install ragel 6.9
-    export PATH=$(MASON_PLATFORM= ${MASON_DIR}/mason prefix ragel 6.9)/bin:$PATH
+
+    pushd ${MASON_ROOT}/..
+    env -i HOME="$HOME" PATH="$PATH" USER="$USER" ${MASON_DIR}/mason build ragel 6.9
+    popd
+
+export PATH=$(MASON_PLATFORM= ${MASON_DIR}/mason prefix ragel 6.9)/bin:$PATH
     export PKG_CONFIG_PATH="$(${MASON_DIR}/mason prefix freetype ${FREETYPE_VERSION})/lib/pkgconfig":${PKG_CONFIG_PATH:-}
     export C_INCLUDE_PATH="${MASON_FREETYPE}/include/freetype2"
     export CPLUS_INCLUDE_PATH="${MASON_FREETYPE}/include/freetype2"