# HG changeset patch
# User "Yann E. MORIN" <yann.morin.1998@anciens.enib.fr>
# Date 1324993503 -3600
# Node ID 4a21f0eb8b570887b1e757819d146d2b1756f1fb
# Parent  1c5ca9b0a5a0d3d09aadcaead0a97d71798ac5c4
libc/glibc: allow to selectively install headers and/or start-files

When doing multilib, we only need the headers from the default variant,
but we need the startfiles for each variants.

Allow the frontend to specify either one, or both.

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

diff -r 1c5ca9b0a5a0 -r 4a21f0eb8b57 scripts/build/libc/glibc-eglibc.sh-common
--- a/scripts/build/libc/glibc-eglibc.sh-common	Wed Nov 23 00:11:36 2011 +0100
+++ b/scripts/build/libc/glibc-eglibc.sh-common	Tue Dec 27 14:45:03 2011 +0100
@@ -77,16 +77,28 @@
     local multi_dir
     local multi_flags
     local extra_dir
-    local arg f fn ln pre
+    local libc_headers libc_startfiles libc_full
+    local hdr
+    local arg
 
     for arg in "$@"; do
         eval "${arg// /\\ }"
     done
 
     case "${libc_mode}" in
-        startfiles) CT_DoStep INFO "Installing C library headers & start files";;
-        final)      CT_DoStep INFO "Installing C library";;
-        *)          CT_Abort "Unsupported (or unset) libc_mode='${libc_mode}'";;
+        startfiles)
+            CT_DoStep INFO "Installing C library headers & start files"
+            hdr=y
+            libc_startfiles=y
+            libc_full=
+            ;;
+        final)
+            CT_DoStep INFO "Installing C library"
+            hdr=
+            libc_startfiles=
+            libc_full=y
+            ;;
+        *)  CT_Abort "Unsupported (or unset) libc_mode='${libc_mode}'";;
     esac
 
     # If gcc is not configured for multilib, it still prints
@@ -119,17 +131,21 @@
                 CT_DoExecLog ALL ln -sf "../../usr/lib/${multi_dir}" "${multi_dir}/usr/lib"
                 CT_Popd
             fi
+            libc_headers=
         else
             extra_dir=
             extra_flags=
+            libc_headers="${hdr}"
         fi
 
         mkdir -p "${CT_BUILD_DIR}/build-libc-${libc_mode}${extra_dir//\//_}"
         CT_Pushd "${CT_BUILD_DIR}/build-libc-${libc_mode}${extra_dir//\//_}"
 
-        do_libc_backend_once extra_dir="${extra_dir}"      \
-                             extra_flags="${extra_flags}"   \
-                             "$@"
+        do_libc_backend_once extra_dir="${extra_dir}"               \
+                             extra_flags="${extra_flags}"           \
+                             libc_headers="${libc_headers}"         \
+                             libc_startfiles="${libc_startfiles}"   \
+                             libc_full="${libc_full}"
 
         CT_Popd
 
@@ -160,11 +176,15 @@
 # This backend builds the C library once
 # Usage: do_libc_backend_once param=value [...]
 #   Parameter           : Definition                            : Type      : Default
-#   libc_mode           : 'startfiles' or 'final'               : string    : (none)
+#   libc_headers        : Build libc headers                    : bool      : n
+#   libc_startfiles     : Build libc start-files                : bool      : n
+#   libc_full           : Build full libc                       : bool      : n
 #   extra_flags         : Extra CFLAGS to use (for multilib)    : string    : (empty)
 #   extra_dir           : Extra subdir for multilib             : string    : (empty)
 do_libc_backend_once() {
-    local libc_mode
+    local libc_headers
+    local libc_startfiles
+    local libc_full
     local extra_flags
     local extra_dir
     local src_dir="${CT_SRC_DIR}/${CT_LIBC}-${CT_LIBC_VERSION}"
@@ -350,7 +370,7 @@
             ;;
     esac
 
-    if [ "${libc_mode}" = "startfiles" ]; then
+    if [ "${libc_headers}" = "y" ]; then
         CT_DoLog EXTRA "Installing C library headers"
 
         # use the 'install-headers' makefile target to install the
@@ -387,7 +407,9 @@
                     ;;
             esac
         fi
+    fi # libc_headers == y
 
+    if [ "${libc_startfiles}" = "y" ]; then
         if [ "${CT_THREADS}" = "nptl" ]; then
             CT_DoLog EXTRA "Installing C library start files"
 
@@ -410,7 +432,9 @@
                                            -x c /dev/null   \
                                            -o "${CT_SYSROOT_DIR}${extra_dir}/usr/lib/libc.so"
         fi # threads == nptl
-    else # libc_mode = final
+    fi # libc_headers == y
+
+    if [ "${libc_full}" = "y" ]; then
         CT_DoLog EXTRA "Building C library"
         CT_DoExecLog ALL make ${JOBSFLAGS}              \
                               "${extra_make_args[@]}"   \
@@ -437,7 +461,7 @@
         if [ "${CT_LIBC_LOCALES}" = "y" ]; then
             do_libc_locales
         fi
-    fi
+    fi # libc_full == y
 }
 
 # This function finishes the C library install