binutils: add frontends for building to run on the build machine

In canadian-cross, we need binutils running on the build machine to be
able to build the target C library.

Signed-off-by: "Yann E. MORIN" <yann.morin.1998@anciens.enib.fr>

2 files changed, 45 insertions, 2 deletions

diff --git a/scripts/build/binutils/binutils.sh b/scripts/build/binutils/binutils.sh
index 3a9afac8..dab3af49 100644
--- a/scripts/build/binutils/binutils.sh
+++ b/scripts/build/binutils/binutils.sh
@@ -15,6 +15,26 @@ do_binutils_extract() {
     CT_Patch "binutils" "${CT_BINUTILS_VERSION}"
 }
 
+# Build binutils for build -> target
+do_binutils_for_build() {
+    local -a binutils_opts
+
+    case "${CT_TOOLCHAIN_TYPE}" in
+        native|cross)   return 0;;
+    esac
+
+    CT_DoStep INFO "Installing binutils for build"
+    CT_mkdir_pushd "${CT_BUILD_DIR}/build-binutils-build-${CT_BUILD}"
+
+    binutils_opts+=( "host=${CT_BUILD}" )
+    binutils_opts+=( "prefix=${CT_BUILDTOOLS_PREFIX_DIR}" )
+
+    do_binutils_backend "${binutils_opts[@]}"
+
+    CT_Popd
+    CT_EndStep
+}
+
 # Build binutils for host -> target
 do_binutils_for_host() {
     local -a binutils_tools
diff --git a/scripts/build/binutils/elf2flt.sh b/scripts/build/binutils/elf2flt.sh
index f203bba7..89fc6c72 100644
--- a/scripts/build/binutils/elf2flt.sh
+++ b/scripts/build/binutils/elf2flt.sh
@@ -6,6 +6,7 @@
 # Default: do nothing
 do_elf2flt_get()        { :; }
 do_elf2flt_extract()    { :; }
+do_elf2flt_for_build()  { :; }
 do_elf2flt_for_host()   { :; }
 
 if [ -n "${CT_ARCH_BINFMT_FLAT}" ]; then
@@ -25,6 +26,27 @@ do_elf2flt_extract() {
     CT_Patch "elf2flt-cvs" "${CT_ELF2FLT_VERSION}"
 }
 
+# Build elf2flt for build -> target
+do_elf2flt_for_build() {
+    local -a elf2flt_opts
+
+    case "${CT_TOOLCHAIN_TYPE}" in
+        native|cross)   return 0;;
+    esac
+
+    CT_DoStep INFO "Installing elf2flt for build"
+    CT_mkdir_pushd "${CT_BUILD_DIR}/build-elf2flt-build-${CT_BUILD}"
+
+    elf2flt_opts+=( "host=${CT_BUILD}" )
+    elf2flt_opts+=( "prefix=${CT_BUILDTOOLS_PREFIX_DIR}" )
+    elf2flt_opts+=( "binutils_bld=${CT_BUILD_DIR}/build-binutils-build-${CT_HOST}" )
+
+    do_elf2flt_backend "${elf2flt_opts[@]}"
+
+    CT_Popd
+    CT_EndStep
+}
+
 # Build elf2flt for host -> target
 do_elf2flt_for_host() {
     local -a elf2flt_opts
@@ -36,6 +58,7 @@ do_elf2flt_for_host() {
     elf2flt_opts+=( "prefix=${CT_PREFIX_DIR}" )
     elf2flt_opts+=( "static_build=${CT_STATIC_TOOLCHAIN}" )
     elf2flt_opts+=( "cflags=${CT_CFLAGS_FOR_HOST}" )
+    elf2flt_opts+=( "binutils_bld=${CT_BUILD_DIR}/build-binutils-host-${CT_HOST}" )
 
     do_elf2flt_backend "${elf2flt_opts[@]}"
 
@@ -75,14 +98,14 @@ do_elf2flt_backend() {
     local prefix
     local static_build
     local cflags
+    local binutils_bld
+    local binutils_src
     local arg
 
     for arg in "$@"; do
         eval "${arg// /\\ }"
     done
 
-    elf2flt_opts=
-    binutils_bld="${CT_BUILD_DIR}/build-binutils-host-${CT_HOST}"
     binutils_src="${CT_SRC_DIR}/binutils-${CT_BINUTILS_VERSION}"
 
     CT_DoLog EXTRA "Configuring elf2flt"