[PATCH 3/5] configure: use TEST_CC to check for -Ttext-segment

[Adhemerval Zanella]

The ld.lld does not support this option; however, it does support a
similar option (--image-base=).  If the -Ttext-segment check fails, it
also checks for support for --image-base=.
---
 configure    | 41 +++++++++++++++++++++++++++++++++++++++++
 configure.ac | 15 +++++++++++----
 2 files changed, 52 insertions(+), 4 deletions(-)

diff --git a/configure b/configure
index 4cfc3daf83..7bf92aab37 100755
--- a/configure
+++ b/configure
@@ -9125,6 +9125,8 @@ libc_linker_feature=no
 cat > conftest.c <<EOF
 int _start (void) { return 42; }
 EOF
+saved_CC="$CC"
+CC="$TEST_CC"
 if { ac_try='${CC-cc} $CFLAGS $CPPFLAGS $LDFLAGS $no_ssp
 		  -Wl,-Ttext-segment=$libc_cv_pde_load_address -nostdlib -nostartfiles
 		  -fPIC -shared -o conftest.so conftest.c
@@ -9149,8 +9151,47 @@ if test $libc_linker_feature = yes; then
 else
   libc_cv_load_address_ldflag=
 fi
+CC="$saved_CC"
 { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $libc_linker_feature" >&5
 printf "%s\n" "$libc_linker_feature" >&6; }
+if test -z $libc_cv_load_address_ldflag; then
+  # ld.lld does not support -Ttext-segment, but supports a similar option
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for linker that supports --image-base=$libc_cv_pde_load_address" >&5
+printf %s "checking for linker that supports --image-base=$libc_cv_pde_load_address... " >&6; }
+libc_linker_feature=no
+cat > conftest.c <<EOF
+int _start (void) { return 42; }
+EOF
+saved_CC="$CC"
+CC="$TEST_CC"
+if { ac_try='${CC-cc} $CFLAGS $CPPFLAGS $LDFLAGS $no_ssp
+		  -Wl,--image-base=$libc_cv_pde_load_address -nostdlib -nostartfiles
+		  -fPIC -shared -o conftest.so conftest.c
+		  1>&5'
+  { { eval echo "\"\$as_me\":${as_lineno-$LINENO}: \"$ac_try\""; } >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  printf "%s\n" "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+  test $ac_status = 0; }; }
+then
+  if ${CC-cc} $CFLAGS $CPPFLAGS $LDFLAGS $no_ssp -Wl,--image-base=$libc_cv_pde_load_address -nostdlib \
+      -nostartfiles -fPIC -shared -o conftest.so conftest.c 2>&1 \
+      | grep "warning: --image-base=$libc_cv_pde_load_address ignored" > /dev/null 2>&1; then
+    true
+  else
+    libc_linker_feature=yes
+  fi
+fi
+rm -f conftest*
+if test $libc_linker_feature = yes; then
+  libc_cv_load_address_ldflag=-Wl,--image-base
+else
+  libc_cv_load_address_ldflag=
+fi
+CC="$saved_CC"
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $libc_linker_feature" >&5
+printf "%s\n" "$libc_linker_feature" >&6; }
+fi
 config_vars="$config_vars
 load-address-ldflag = $libc_cv_load_address_ldflag"
 
diff --git a/configure.ac b/configure.ac
index c7907f48f8..92ad33f37a 100644
--- a/configure.ac
+++ b/configure.ac
@@ -2043,10 +2043,17 @@ LIBC_CONFIG_VAR([pde-load-address], [$libc_cv_pde_load_address])
 # Get the linker command-line option to load executable at a non-zero
 # load address.  This is only used by glibc tests to verify that PIE and
 # static PIE with non-zero load address work correctly.
-LIBC_LINKER_FEATURE([-Ttext-segment=$libc_cv_pde_load_address],
-		    [-Wl,-Ttext-segment=$libc_cv_pde_load_address],
-		    [libc_cv_load_address_ldflag=-Wl,-Ttext-segment],
-		    [libc_cv_load_address_ldflag=])
+LIBC_TEST_LINKER_FEATURE([-Ttext-segment=$libc_cv_pde_load_address],
+			 [-Wl,-Ttext-segment=$libc_cv_pde_load_address],
+			 [libc_cv_load_address_ldflag=-Wl,-Ttext-segment],
+			 [libc_cv_load_address_ldflag=])
+if test -z $libc_cv_load_address_ldflag; then
+  # ld.lld does not support -Ttext-segment, but supports a similar option
+  LIBC_TEST_LINKER_FEATURE([--image-base=$libc_cv_pde_load_address],
+			   [-Wl,--image-base=$libc_cv_pde_load_address],
+			   [libc_cv_load_address_ldflag=-Wl,--image-base],
+			   [libc_cv_load_address_ldflag=])
+fi
 LIBC_CONFIG_VAR([load-address-ldflag], [$libc_cv_load_address_ldflag])
 
 # Check if compiler supports -fno-fp-int-builtin-inexact
-- 
2.43.0