elfutils: Add host build

Needed for glib2 host build:

gresource-tool.c:32:20: fatal error: libelf.h: No such file or directory
 #include <libelf.h>

Changed PKG_LICENSE to the SPDX version.

Switched build dependency for argp-standalone to !USE_GLIBC. argp is a
glibc extension. Treat it as such.

Adjusted patch to use strerror_l, which works properly with both glibc
and musl. The patch errors under glibc with:

dwfl_error.c:158:7: error: ignoring return value of 'strerror_r', declared
with attribute warn_unused_result [-Werror=unused-result]
       strerror_r (error & 0xffff, s, sizeof(s));

void casting does not fix the error.

Signed-off-by: Rosen Penev <rosenp@gmail.com>

1 files changed, 2 insertions, 11 deletions

diff --git a/package/libs/elfutils/patches/100-musl-compat.patch b/package/libs/elfutils/patches/100-musl-compat.patch
index 9631ce05d6..109b7ece08 100644
--- a/package/libs/elfutils/patches/100-musl-compat.patch
+++ b/package/libs/elfutils/patches/100-musl-compat.patch
@@ -44,21 +44,12 @@ https://sourceware.org/bugzilla/show_bug.cgi?id=21002
  }
 --- a/libdwfl/dwfl_error.c
 +++ b/libdwfl/dwfl_error.c
-@@ -140,6 +140,7 @@ __libdwfl_seterrno (Dwfl_Error error)
- const char *
- dwfl_errmsg (int error)
- {
-+  static __thread char s[64] = "";
-   if (error == 0 || error == -1)
-     {
-       int last_error = global_error;
-@@ -154,7 +155,8 @@ dwfl_errmsg (int error)
+@@ -154,7 +154,7 @@ dwfl_errmsg (int error)
    switch (error &~ 0xffff)
      {
      case OTHER_ERROR (ERRNO):
 -      return strerror_r (error & 0xffff, "bad", 0);
-+      strerror_r (error & 0xffff, s, sizeof(s));
-+      return s;
++      return strerror_l (error & 0xffff, LC_GLOBAL_LOCALE);
      case OTHER_ERROR (LIBELF):
        return elf_errmsg (error & 0xffff);
      case OTHER_ERROR (LIBDW):