Commit f792adb61a27aa2a7d24573b956ce29ebdb82e03
2021-06-26T22:26:52
configure.ac: allow user to specify READELF (#646) Before the change with x86_64-pc-linux-gnu cross-compiler installed the configure was not able to find cross-readelf: ``` $ ./configure --host=x86_64-pc-linux-gnu ... checking whether .eh_frame section should be read-only... .././configure: line 19540: readelf: command not found yes ... ``` The change uses AC_CHECK_TOOL to automatically seatch for ${host}-readelf, readelf. And as a bonus it also allows user to override readelf with something like READELF=llvm-readelf. Signed-off-by: Sergei Trofimovich <slyfox@gentoo.org>
diff --git a/configure.ac b/configure.ac
index fea0242..21d4f85 100644
--- a/configure.ac
+++ b/configure.ac
@@ -41,6 +41,8 @@ AM_PROG_CC_C_O
AC_PROG_LIBTOOL
AC_CONFIG_MACRO_DIR([m4])
+AC_CHECK_TOOL(READELF, readelf)
+
# Test for 64-bit build.
AC_CHECK_SIZEOF([size_t])
@@ -271,7 +273,7 @@ if test "x$GCC" = "xyes"; then
libffi_cv_ro_eh_frame=yes
echo 'extern void foo (void); void bar (void) { foo (); foo (); }' > conftest.c
if $CC $CFLAGS -c -fpic -fexceptions $libffi_cv_no_lto -o conftest.o conftest.c > /dev/null 2>&1; then
- if readelf -WS conftest.o | grep -q -n 'eh_frame .* WA'; then
+ if $READELF -WS conftest.o | grep -q -n 'eh_frame .* WA'; then
libffi_cv_ro_eh_frame=no
fi
fi