check-deps: changed gelf function in __have_libelf.c

Even though 'libelf-devel' is installed,
'libelf' is displayed as [OFF] rather than [ON] when running ./configure.

Fixed : namhyung#1869
(issue : gcc -Wall -Werror: libelf: [ OFF ] even when libelf-devel is installed)

Signed-off-by: Sojin Jang <[email protected]>

Author: JangSoJin

check-deps/__have_libelf.c

@@ -3,8 +3,14 @@
 
 int main(void)
 {
-	GElf_Ehdr ehdr;
+      Elf *elf;
 
-	elf_version(EV_CURRENT);
-	return 0;
+      elf_version(EV_CURRENT);
+
+      /* check that the gelf function */
+      elf = elf_begin(0, ELF_C_READ, NULL);
+      gelf_checksum(elf);
+      elf_end(elf);
+
+      return 0;
 }