Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/sam/kbuild-next

* 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/sam/kbuild-next: (53 commits)
  .gitignore: ignore *.lzma files
  kbuild: add generic --set-str option to scripts/config
  kbuild: simplify argument loop in scripts/config
  kbuild: handle non-existing options in scripts/config
  kallsyms: generalize text region handling
  kallsyms: support kernel symbols in Blackfin on-chip memory
  documentation: make version fix
  kbuild: fix a compile warning
  gitignore: Add GNU GLOBAL files to top .gitignore
  kbuild: fix delay in setlocalversion on readonly source
  README: fix misleading pointer to the defconf directory
  vmlinux.lds.h update
  kernel-doc: cleanup perl script
  Improve vmlinux.lds.h support for arch specific linker scripts
  kbuild: fix headers_exports with boolean expression
  kbuild/headers_check: refine extern check
  kbuild: fix "Argument list too long" error for "make headers_check",
  ignore *.patch files
  Remove bashisms from scripts
  menu: fix embedded menu presentation
  ...

23 files changed, 462 insertions, 281 deletions

diff --git a/scripts/Makefile.headersinst b/scripts/Makefile.headersinst
index 095cfc8b9dbf..0fcd83838771 100644
--- a/scripts/Makefile.headersinst
+++ b/scripts/Makefile.headersinst
@@ -54,8 +54,12 @@ quiet_cmd_remove = REMOVE  $(unwanted)
       cmd_remove = rm -f $(unwanted-file)
 
 quiet_cmd_check = CHECK   $(printdir) ($(words $(all-files)) files)
-      cmd_check = $(PERL) $< $(INSTALL_HDR_PATH)/include $(SRCARCH) \
-                  $(addprefix $(install)/, $(all-files));           \
+# Headers list can be pretty long, xargs helps to avoid
+# the "Argument list too long" error.
+      cmd_check = for f in $(all-files); do                          \
+                  echo "$(install)/$${f}"; done                      \
+                  | xargs                                            \
+                  $(PERL) $< $(INSTALL_HDR_PATH)/include $(SRCARCH); \
                   touch $@
 
 PHONY += __headersinst __headerscheck
diff --git a/scripts/basic/docproc.c b/scripts/basic/docproc.c
index 35bdc68b6e66..4c9523ef9c00 100644
--- a/scripts/basic/docproc.c
+++ b/scripts/basic/docproc.c
@@ -69,7 +69,7 @@ FILELINE * docsection;
 #define NOFUNCTION    "-nofunction"
 #define NODOCSECTIONS "-no-doc-sections"
 
-char *srctree;
+static char *srctree, *kernsrctree;
 
 void usage (void)
 {
@@ -77,7 +77,8 @@ void usage (void)
         fprintf(stderr, "Input is read from file.tmpl. Output is sent to stdout\n");
         fprintf(stderr, "doc: frontend when generating kernel documentation\n");
         fprintf(stderr, "depend: generate list of files referenced within file\n");
-        fprintf(stderr, "Environment variable SRCTREE: absolute path to kernel source tree.\n");
+        fprintf(stderr, "Environment variable SRCTREE: absolute path to sources.\n");
+        fprintf(stderr, "                     KBUILD_SRC: absolute path to kernel source tree.\n");
 }
 
 /*
@@ -96,8 +97,8 @@ void exec_kernel_doc(char **svec)
                         exit(1);
                 case  0:
                         memset(real_filename, 0, sizeof(real_filename));
-                        strncat(real_filename, srctree, PATH_MAX);
-                        strncat(real_filename, KERNELDOCPATH KERNELDOC,
+                        strncat(real_filename, kernsrctree, PATH_MAX);
+                        strncat(real_filename, "/" KERNELDOCPATH KERNELDOC,
                                         PATH_MAX - strlen(real_filename));
                         execvp(real_filename, svec);
                         fprintf(stderr, "exec ");
@@ -178,6 +179,7 @@ void find_export_symbols(char * filename)
                 char real_filename[PATH_MAX + 1];
                 memset(real_filename, 0, sizeof(real_filename));
                 strncat(real_filename, srctree, PATH_MAX);
+                strncat(real_filename, "/", PATH_MAX - strlen(real_filename));
                 strncat(real_filename, filename,
                                 PATH_MAX - strlen(real_filename));
                 sym = add_new_file(filename);
@@ -382,6 +384,9 @@ int main(int argc, char *argv[])
         srctree = getenv("SRCTREE");
         if (!srctree)
                 srctree = getcwd(NULL, 0);
+        kernsrctree = getenv("KBUILD_SRC");
+        if (!kernsrctree)
+                kernsrctree = srctree;
         if (argc != 3) {
                 usage();
                 exit(1);
diff --git a/scripts/basic/fixdep.c b/scripts/basic/fixdep.c
index 8912c0f5460b..72c15205bb2b 100644
--- a/scripts/basic/fixdep.c
+++ b/scripts/basic/fixdep.c
@@ -373,10 +373,11 @@ void print_deps(void)
 void traps(void)
 {
         static char test[] __attribute__((aligned(sizeof(int)))) = "CONF";
+        int *p = (int *)test;
 
-        if (*(int *)test != INT_CONF) {
+        if (*p != INT_CONF) {
                 fprintf(stderr, "fixdep: sizeof(int) != 4 or wrong endianess? %#x\n",
-                        *(int *)test);
+                        *p);
                 exit(2);
         }
 }
diff --git a/scripts/config b/scripts/config
index db6084b78a10..608d7fdb13e8 100755
--- a/scripts/config
+++ b/scripts/config
@@ -9,8 +9,10 @@ config options command ...
 commands:
         --enable|-e option   Enable option
         --disable|-d option  Disable option
-        --module|-m option      Turn option into a module
-        --state|-s option       Print state of option (n,y,m,undef)
+        --module|-m option   Turn option into a module
+        --set-str option value
+                             Set option to "value"
+        --state|-s option    Print state of option (n,y,m,undef)
 
         --enable-after|-E beforeopt option
                              Enable option directly after other option
@@ -26,8 +28,6 @@ options:
 
 config doesn't check the validity of the .config file. This is done at next
  make time.
-The options need to be already in the file before they can be changed,
-but sometimes you can cheat with the --*-after options.
 EOL
         exit 1
 }
@@ -45,8 +45,18 @@ checkarg() {
         ARG="`echo $ARG | tr a-z A-Z`"
 }
 
-replace() {
-        sed -i -e "$@" $FN
+set_var() {
+        local name=$1 new=$2 before=$3
+
+        name_re="^($name=|# $name is not set)"
+        before_re="^($before=|# $before is not set)"
+        if test -n "$before" && grep -Eq "$before_re" "$FN"; then
+                sed -ri "/$before_re/a $new" "$FN"
+        elif grep -Eq "$name_re" "$FN"; then
+                sed -ri "s:$name_re.*:$new:" "$FN"
+        else
+                echo "$new" >>"$FN"
+        fi
 }
 
 if [ "$1" = "--file" ]; then
@@ -54,8 +64,7 @@ if [ "$1" = "--file" ]; then
         if [ "$FN" = "" ] ; then
                 usage
         fi
-        shift
+        shift 2