set SEARCH_PATH for the linker script from output of ld --verbose -v

Signed-off-by: Juan Quintela <quintela@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>

Makefile

@@ -225,7 +225,7 @@ clean:
         done
 
 distclean: clean
-	rm -f config-host.mak config-host.h $(DOCS) qemu-options.texi qemu-img-cmds.texi
+	rm -f config-host.mak config-host.h config-host.ld $(DOCS) qemu-options.texi qemu-img-cmds.texi
 	rm -f qemu-{doc,tech}.{info,aux,cp,dvi,fn,info,ky,log,pg,toc,tp,vr}
 	for d in $(TARGET_DIRS) libhw32 libhw64; do \
 	rm -rf $$d || exit 1 ; \

alpha.ld

@@ -2,7 +2,6 @@ OUTPUT_FORMAT("elf64-alpha", "elf64-alpha",
 	      "elf64-alpha")
 OUTPUT_ARCH(alpha)
 ENTRY(__start)
-SEARCH_DIR(/lib); SEARCH_DIR(/usr/lib); SEARCH_DIR(/usr/local/lib); SEARCH_DIR(/usr/alpha-unknown-linux-gnu/lib);
 SECTIONS
 {
   /* Read-only sections, merged into text segment: */

arm.ld

@@ -2,7 +2,6 @@ OUTPUT_FORMAT("elf32-littlearm", "elf32-littlearm",
 	      "elf32-littlearm")
 OUTPUT_ARCH(arm)
 ENTRY(_start)
-SEARCH_DIR(/lib); SEARCH_DIR(/usr/lib); SEARCH_DIR(/usr/local/lib); SEARCH_DIR(/usr/alpha-unknown-linux-gnu/lib);
 SECTIONS
 {
   /* Read-only sections, merged into text segment: */

configure

@@ -1477,6 +1477,7 @@ fi
 
 config_host_mak="config-host.mak"
 config_host_h="config-host.h"
+config_host_ld="config-host.ld"
 
 #echo "Creating $config_host_mak and $config_host_h"
 
@@ -1784,6 +1785,18 @@ if test -f ${config_host_h}~ ; then
   fi
 fi
 
+# generate list of library paths for linker script
+
+$ld --verbose -v 2> /dev/null | grep SEARCH_DIR > ${config_host_ld}
+
+if test -f ${config_host_ld}~ ; then
+  if cmp -s $config_host_ld ${config_host_ld}~ ; then
+    mv ${config_host_ld}~ $config_host_ld
+  else
+    rm ${config_host_ld}~
+  fi
+fi
+
 for target in $target_list; do
 target_dir="$target"
 config_mak=$target_dir/config.mak
@@ -2049,7 +2062,7 @@ if test "$target_linux_user" = "yes" -o "$target_linux_user" = "yes" ; then
   case "$ARCH" in
   i386)
     if test "$gprof" = "yes" -o "$static" = "yes" ; then
-      ldflags='-Wl,-T,$(SRC_PATH)/$(ARCH).ld'
+      ldflags='-Wl,-T../config-host.ld -Wl,-T,$(SRC_PATH)/$(ARCH).ld'
     else
       # WARNING: this LDFLAGS is _very_ tricky : qemu is an ELF shared object
       # that the kernel ELF loader considers as an executable. I think this
@@ -2059,20 +2072,20 @@ if test "$target_linux_user" = "yes" -o "$target_linux_user" = "yes" ; then
     ;;
   sparc)
     # -static is used to avoid g1/g3 usage by the dynamic linker
-    ldflags='-Wl,-T,$(SRC_PATH)/$(ARCH).ld -static'
+    ldflags='-Wl,-T../config-host.ld -Wl,-T,$(SRC_PATH)/$(ARCH).ld -static'
     ;;
   ia64)
-    ldflags='-Wl,-G0 -Wl,-T,$(SRC_PATH)/$(ARCH).ld -static'
+    ldflags='-Wl,-G0 -Wl,-T../config-host.ld -Wl,-T,$(SRC_PATH)/$(ARCH).ld -static'
     ;;
   x86_64|ppc|ppc64|s390|sparc64|alpha|arm|m68k|mips|mips64)
-    ldflags='-Wl,-T,$(SRC_PATH)/$(ARCH).ld'
+    ldflags='-Wl,-T../config-host.ld -Wl,-T,$(SRC_PATH)/$(ARCH).ld'
     ;;
   esac
 fi
 if test "$target_softmmu" = "yes" ; then
   case "$ARCH" in
   ia64)
-    ldflags='-Wl,-G0 -Wl,-T,$(SRC_PATH)/$(ARCH).ld -static'
+    ldflags='-Wl,-G0 -Wl,-T../config-host.ld -Wl,-T,$(SRC_PATH)/$(ARCH).ld -static'
     ;;
   esac
 fi

hppa.ld

@@ -3,7 +3,6 @@ OUTPUT_FORMAT("elf32-hppa-linux", "elf32-hppa-linux",
 	      "elf32-hppa-linux")
 OUTPUT_ARCH(hppa:hppa1.1)
 ENTRY(_start)
-SEARCH_DIR("/usr/hppa-linux-gnu/lib"); SEARCH_DIR("/usr/local/lib"); SEARCH_DIR("/lib"); SEARCH_DIR("/usr/lib");
 SECTIONS
 {
   /* Read-only sections, merged into text segment: */

i386.ld

@@ -3,7 +3,6 @@
  */
 OUTPUT_FORMAT("elf32-i386", "elf32-i386", "elf32-i386")
 OUTPUT_ARCH(i386)
-SEARCH_DIR(/lib); SEARCH_DIR(/usr/lib); SEARCH_DIR(/usr/local/lib); SEARCH_DIR(/usr/alpha-unknown-linux-gnu/lib);
 ENTRY(_start)
 SECTIONS
 {

ia64.ld

@@ -3,9 +3,7 @@ OUTPUT_FORMAT("elf64-ia64-little", "elf64-ia64-little",
 	      "elf64-ia64-little")
 OUTPUT_ARCH(ia64)
 ENTRY(_start)
-SEARCH_DIR("/usr/ia64-linux/lib"); SEARCH_DIR("/usr/local/lib"); SEARCH_DIR("/lib"); SEARCH_DIR("/usr/lib");
-/* Do we need any of these for elf?
-   __DYNAMIC = 0;    */
+/* __DYNAMIC = 0;    */
 SECTIONS
 {
   /* Read-only sections, merged into text segment: */

m68k.ld

@@ -3,9 +3,7 @@ OUTPUT_FORMAT("elf32-m68k", "elf32-m68k",
 	      "elf32-m68k")
 OUTPUT_ARCH(m68k)
 ENTRY(_start)
-SEARCH_DIR("/usr/local/m68k-linux/lib");
-/* Do we need any of these for elf?
-   __DYNAMIC = 0;    */
+/* __DYNAMIC = 0;    */
 SECTIONS
 {
   /* Read-only sections, merged into text segment: */

mips.ld

@@ -3,7 +3,6 @@ OUTPUT_FORMAT("elf32-tradbigmips", "elf32-tradbigmips",
              "elf32-tradlittlemips")
 OUTPUT_ARCH(mips)
 ENTRY(__start)
-SEARCH_DIR("/usr/mips-linux-gnu/lib");
 SECTIONS
 {
   /* Read-only sections, merged into text segment: */

ppc.ld

@@ -3,7 +3,6 @@
  */
 OUTPUT_FORMAT("elf32-powerpc", "elf32-powerpc", "elf32-powerpc")
 OUTPUT_ARCH(powerpc:common)
-SEARCH_DIR(/usr/powerpc-linux-gnu/lib); SEARCH_DIR(/usr/local/lib); SEARCH_DIR(/lib); SEARCH_DIR(/usr/lib)
 ENTRY(_start)
 SECTIONS
 {

ppc64.ld

@@ -3,13 +3,7 @@ OUTPUT_FORMAT("elf64-powerpc", "elf64-powerpc",
 	      "elf64-powerpc")
 OUTPUT_ARCH(powerpc:common64)
 ENTRY(_start)
-SEARCH_DIR("/usr/powerpc64-unknown-linux-gnu/lib64");
-SEARCH_DIR("/usr/lib/binutils/powerpc64-unknown-linux-gnu/2.16.164");
-SEARCH_DIR("/usr/local/lib64"); SEARCH_DIR("/lib64"); SEARCH_DIR("/usr/lib64");
-SEARCH_DIR("/usr/powerpc64-unknown-linux-gnu/lib");
-SEARCH_DIR("/usr/lib/binutils/powerpc64-unknown-linux-gnu/2.16.1");
-SEARCH_DIR("/usr/local/lib"); SEARCH_DIR("/lib"); SEARCH_DIR("/usr/lib"); /* Do we
-need any of these for elf? +   __DYNAMIC = 0;    */
+/* __DYNAMIC = 0;    */
 SECTIONS
 {
   /* Read-only sections, merged into text segment: */

s390.ld

@@ -2,9 +2,7 @@ OUTPUT_FORMAT("elf32-s390", "elf32-s390",
 	      "elf32-s390")
 OUTPUT_ARCH(s390:31-bit)
 ENTRY(_start)
-SEARCH_DIR("/usr/s390-redhat-linux/lib"); SEARCH_DIR("/usr/lib"); SEARCH_DIR("/usr/local/lib"); SEARCH_DIR("/lib");
-/* Do we need any of these for elf?
-   __DYNAMIC = 0;    */
+/* __DYNAMIC = 0;    */
 SECTIONS
 {
   /* Read-only sections, merged into text segment: */

sparc.ld

@@ -1,7 +1,6 @@
 OUTPUT_FORMAT("elf32-sparc", "elf32-sparc",
               "elf32-sparc")
 OUTPUT_ARCH(sparc)
-SEARCH_DIR(/lib); SEARCH_DIR(/usr/lib); SEARCH_DIR(/usr/local/lib); SEARCH_DIR(/usr/alpha-unknown-linux-gnu/lib);
 ENTRY(_start)
 SECTIONS
 {

sparc64.ld

@@ -1,7 +1,6 @@
 OUTPUT_FORMAT("elf64-sparc", "elf64-sparc",
               "elf64-sparc")
 OUTPUT_ARCH(sparc:v9)
-SEARCH_DIR(/lib64); SEARCH_DIR(/lib); SEARCH_DIR(/usr/lib64); SEARCH_DIR(/usr/lib); SEARCH_DIR(/usr/local/lib64); SEARCH_DIR(/usr/local/lib); SEARCH_DIR(/usr/alpha-unknown-linux-gnu/lib);
 ENTRY(_start)
 SECTIONS
 {

x86_64.ld

@@ -2,7 +2,6 @@
 OUTPUT_FORMAT("elf64-x86-64", "elf64-x86-64", "elf64-x86-64")
 OUTPUT_ARCH(i386:x86-64)
 ENTRY(_start)
-SEARCH_DIR("/lib64"); SEARCH_DIR("/usr/lib64"); SEARCH_DIR("/usr/local/lib64");
 SECTIONS
 {
   /* Read-only sections, merged into text segment: */