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

In canadian-cross, we need the companion libraries running on the
build machine, to be able to build the two core gcc.

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

1 files changed, 23 insertions, 0 deletions

diff --git a/scripts/build/companion_libs/mpfr.sh b/scripts/build/companion_libs/mpfr.sh
index 25bd101d..b3467577 100644
--- a/scripts/build/companion_libs/mpfr.sh
+++ b/scripts/build/companion_libs/mpfr.sh
@@ -4,6 +4,7 @@
 
 do_mpfr_get() { :; }
 do_mpfr_extract() { :; }
+do_mpfr_for_build() { :; }
 do_mpfr_for_host() { :; }
 
 # Overide function depending on configuration
@@ -63,6 +64,28 @@ do_mpfr_extract() {
     esac
 }
 
+# Build MPFR for running on build
+# - always build statically
+# - we do not have build-specific CFLAGS
+# - install in build-tools prefix
+do_mpfr_for_build() {
+    local -a mpfr_opts
+
+    case "${CT_TOOLCHAIN_TYPE}" in
+        native|cross)   return 0;;
+    esac
+
+    CT_DoStep INFO "Installing MPFR for build"
+    CT_mkdir_pushd "${CT_BUILD_DIR}/build-mpfr-build-${CT_BUILD}"
+
+    mpfr_opts+=( "host=${CT_BUILD}" )
+    mpfr_opts+=( "prefix=${CT_BUILDTOOLS_PREFIX_DIR}" )
+    do_mpfr_backend "${mpfr_opts[@]}"
+
+    CT_Popd
+    CT_EndStep
+}
+
 # Build MPFR for running on host
 do_mpfr_for_host() {
     local -a mpfr_opts