Merge pull request #373 from stilor/unbreak-ppc-uclibc

Unbreak samples

config/libc/glibc.in

@@ -74,7 +74,7 @@ choice
 config LIBC_GLIBC_V_2_23
     bool
     prompt "2.23"
-    select LIBC_GLIBC_2_20_or_later
+    select LIBC_GLIBC_2_23_or_later
 
 config LIBC_GLIBC_V_2_22
     bool
@@ -109,6 +109,11 @@ endchoice
 
 endif # ! LIBC_GLIBC_CUSTOM
 
+# Checked by SPARC build: SPARCv8 is dropped in 2.23.
+config LIBC_GLIBC_2_23_or_later
+    select LIBC_GLIBC_2_20_or_later
+    bool
+
 # DeMark 2.20 as no longer needs to set NPTL as an addon.
 # It is no longer possible to build glibc without pthread!
 config LIBC_GLIBC_2_20_or_later

patches/dmalloc/5.5.2/170-ppc-bogus-assembly.patch

@@ -0,0 +1,13 @@
+diff -ur dmalloc-5.5.2.orig/return.h dmalloc-5.5.2/return.h
+--- dmalloc-5.5.2.orig/return.h	2016-03-13 13:11:48.090431764 -0700
++++ dmalloc-5.5.2/return.h	2016-03-13 13:12:11.246642618 -0700
+@@ -251,8 +251,7 @@
+ 
+ #define GET_RET_ADDR(file) \
+ do { \
+-  asm("mflr 0"); \
+-  asm("stw 0,%0" : "=g" (file)); \
++  asm("mflr %0" : "=r"(file)); \
+ } while(0)
+ 
+ #endif /* __powerpc__ && __GNUC__ && !__OPTIMIZE__ */

patches/uClibc-ng/1.0.12/100-provide-_obstack_free.patch

@@ -0,0 +1,12 @@
+diff -ur uClibc-ng-1.0.12.orig/libc/misc/gnu/obstack.c uClibc-ng-1.0.12/libc/misc/gnu/obstack.c
+--- uClibc-ng-1.0.12.orig/libc/misc/gnu/obstack.c	2016-03-13 15:08:44.408962824 -0700
++++ uClibc-ng-1.0.12/libc/misc/gnu/obstack.c	2016-03-13 15:13:30.129322998 -0700
+@@ -385,7 +385,7 @@
+     abort ();
+ }
+ 
+-# if 0
++# if 1
+ /* Older versions of libc used a function _obstack_free intended to be
+    called by non-GCC compilers.  */
+ strong_alias (obstack_free, _obstack_free)

samples/aarch64-rpi3-linux-gnueabi/crosstool.config

@@ -11,4 +11,3 @@ CT_BINUTILS_LD_WRAPPER=y
 CT_BINUTILS_PLUGINS=y
 CT_CC_LANG_CXX=y
 CT_DEBUG_gdb=y
-CT_GDB_CROSS_EXTRA_CONFIG_ARRAY="--with-expat"

samples/aarch64-unknown-linux-gnueabi/crosstool.config

@@ -11,4 +11,3 @@ CT_BINUTILS_LD_WRAPPER=y
 CT_BINUTILS_PLUGINS=y
 CT_CC_LANG_CXX=y
 CT_DEBUG_gdb=y
-CT_GDB_CROSS_EXTRA_CONFIG_ARRAY="--with-expat"

samples/armv7-rpi2-linux-gnueabihf/crosstool.config

@@ -12,4 +12,3 @@ CT_BINUTILS_LD_WRAPPER=y
 CT_BINUTILS_PLUGINS=y
 CT_CC_LANG_CXX=y
 CT_DEBUG_gdb=y
-CT_GDB_CROSS_EXTRA_CONFIG_ARRAY="--with-expat"

samples/armv8-rpi3-linux-gnueabihf/crosstool.config

@@ -12,4 +12,3 @@ CT_BINUTILS_LD_WRAPPER=y
 CT_BINUTILS_PLUGINS=y
 CT_CC_LANG_CXX=y
 CT_DEBUG_gdb=y
-CT_GDB_CROSS_EXTRA_CONFIG_ARRAY="--with-expat"

samples/x86_64-w64-mingw32,x86_64-pc-linux-gnu/crosstool.config

@@ -1,6 +1,4 @@
 CT_EXPERIMENTAL=y
-CT_DEBUG_CT=y
-CT_DEBUG_CT_SAVE_STEPS=y
 CT_LOCAL_TARBALLS_DIR="${HOME}/src"
 CT_SAVE_TARBALLS=y
 # CT_STRIP_HOST_TOOLCHAIN_EXECUTABLES is not set

scripts/build/debug/300-gdb.sh

@@ -69,7 +69,11 @@ do_debug_gdb_build() {
 
         cross_extra_config=("${extra_config[@]}")
         cross_extra_config+=("--with-expat")
-        cross_extra_config+=("--with-libexpat-prefix=${CT_HOST_COMPLIBS_DIR}")
+        # NOTE: DO NOT USE --with-libexpat-prefix (until GDB configure is smarter)!!!
+        # It conflicts with a static build: GDB's configure script will find the shared
+        # version of expat and will attempt to link that, despite the -static flag.
+        # The link will fail, and configure will abort with "expat missing or unusable"
+        # message.
         case "${CT_THREADS}" in
             none)   cross_extra_config+=("--disable-threads");;
             *)      cross_extra_config+=("--enable-threads");;
@@ -88,13 +92,20 @@ do_debug_gdb_build() {
             cross_extra_config+=("--disable-nls")
         fi
 
-        CC_for_gdb=
-        LD_for_gdb=
+        CC_for_gdb="${CT_HOST}-gcc ${CT_CFLAGS_FOR_HOST} ${CT_LDFLAGS_FOR_HOST}"
+        LD_for_gdb="${CT_HOST}-ld ${CT_LDFLAGS_FOR_HOST}"
         if [ "${CT_GDB_CROSS_STATIC}" = "y" ]; then
-            CC_for_gdb="${CT_HOST}-gcc -static"
-            LD_for_gdb="${CT_HOST}-ld -static"
+            CC_for_gdb+=" -static"
+            LD_for_gdb+=" -static"
         fi
 
+        # Fix up whitespace. Some older GDB releases (e.g. 6.8a) get confused if there
+        # are multiple consecutive spaces: sub-configure scripts replace them with a
+        # single space and then complain that $CC value changed from that in
+        # the master directory.
+        CC_for_gdb=`echo $CC_for_gdb`
+        LD_for_gdb=`echo $LD_for_gdb`
+
         # Disable binutils options when building from the binutils-gdb repo.
         cross_extra_config+=("--disable-binutils")
         cross_extra_config+=("--disable-ld")
@@ -162,6 +173,11 @@ do_debug_gdb_build() {
         fi
 
         native_extra_config+=("--with-expat")
+        # NOTE: DO NOT USE --with-libexpat-prefix (until GDB configure is smarter)!!!
+        # It conflicts with a static build: GDB's configure script will find the shared
+        # version of expat and will attempt to link that, despite the -static flag.
+        # The link will fail, and configure will abort with "expat missing or unusable"
+        # message.
 
         CT_DoLog EXTRA "Configuring native gdb"
 

scripts/build/libc/glibc.sh

@@ -73,6 +73,7 @@ do_libc_backend() {
     local multi_dir
     local multi_flags
     local extra_dir
+    local target
     local libc_headers libc_startfiles libc_full
     local hdr
     local arg
@@ -136,11 +137,24 @@ do_libc_backend() {
 
         CT_mkdir_pushd "${CT_BUILD_DIR}/build-libc-${libc_mode}${extra_dir//\//_}"
 
+        target=${CT_TARGET}
+        case "${target}" in
+            # SPARC quirk: glibc 2.23 and newer dropped support for SPARCv8 and
+            # earlier (corresponding pthread barrier code is missing). Until this
+            # support is reintroduced, configure as sparcv9.
+            sparc-*)
+                if [ "${CT_LIBC_GLIBC_2_23_or_later}" = y ]; then
+                    target=${target/#sparc-/sparcv9-}
+                fi
+                ;;
+        esac
+
         do_libc_backend_once extra_dir="${extra_dir}"               \
                              extra_flags="${extra_flags}"           \
                              libc_headers="${libc_headers}"         \
                              libc_startfiles="${libc_startfiles}"   \
-                             libc_full="${libc_full}"
+                             libc_full="${libc_full}"               \
+                             target="${target}"
 
         CT_Popd
 
@@ -192,6 +206,7 @@ do_libc_backend_once() {
     local glibc_cflags
     local float_extra
     local endian_extra
+    local target
     local arg
 
     for arg in "$@"; do
@@ -341,7 +356,7 @@ do_libc_backend_once() {
     "${src_dir}/configure"                                          \
         --prefix=/usr                                               \
         --build=${CT_BUILD}                                         \
-        --host=${CT_TARGET}                                         \
+        --host=${target}                                            \
         --cache-file="$(pwd)/config.cache"                          \
         --without-cvs                                               \
         --disable-profile                                           \

scripts/crosstool-NG.sh.in

@@ -509,6 +509,8 @@ if [ -z "${CT_RESTART}" ]; then
     CT_CFLAGS_FOR_HOST+=" ${CT_EXTRA_CFLAGS_FOR_HOST}"
     CT_LDFLAGS_FOR_HOST=
     CT_LDFLAGS_FOR_HOST+=" ${CT_EXTRA_LDFLAGS_FOR_HOST}"
+    CT_CFLAGS_FOR_HOST+=" -I${CT_HOST_COMPLIBS_DIR}/include"
+    CT_LDFLAGS_FOR_HOST+=" -L${CT_HOST_COMPLIBS_DIR}/lib"
     CT_DoLog DEBUG "CFLAGS for host compiler: '${CT_CFLAGS_FOR_HOST}'"
     CT_DoLog DEBUG "LDFLAGS for host compiler: '${CT_LDFLAGS_FOR_HOST}'"