libphobos: Fix link build errors when compiling with unsupported options
The first compilation test to get baseline warnings was getting more
messages due to a missing object.d file, compared to later configure
tests where libphobos is in the include paths.
Because there must always be an object module during compilation, let
the tests themselves be an empty object module instead.
libphobos/ChangeLog:
2019-04-24 Iain Buclaw <ibuclaw@gdcproject.org>
PR d/88431
* configure: Regenerate.
* m4/libtool.m4 (lt_simple_compile_test_code): Update to not have
dependencies on libphobos.
(lt_simple_link_test_code): Likewise.
(GDCFLAGS): Don't override for D compiler tests.
From-SVN: r270531
diff --git a/libphobos/configure b/libphobos/configure
index 8079a73..7c01989 100755
--- a/libphobos/configure
+++ b/libphobos/configure
@@ -11981,10 +11981,16 @@
objext_D=$objext
# Code to be used in simple compile tests
-lt_simple_compile_test_code="module mod; extern(C) int main() { return 0; }"
+lt_simple_compile_test_code="\
+ module object;
+ shared int some_variable = 0;
+"
# Code to be used in simple link tests
-lt_simple_link_test_code='module mod; extern(C) int main() { return 0; }'
+lt_simple_link_test_code="\
+ module object;
+ extern(C) int main() { return 0; }
+"
# ltmain only uses $CC for tagged configurations so make sure $CC is set.
@@ -12020,12 +12026,9 @@
# Allow CC to be a program name with arguments.
lt_save_CC=$CC
lt_save_CFLAGS=$CFLAGS
-lt_save_DFLAGS=$GDCFLAGS
lt_save_GCC=$GCC
GCC=yes
CC=${GDC-"gdc"}
-# Need to specify location for object.d
-GDCFLAGS="-nophoboslib $GDCFLAGS"
CFLAGS=$GDCFLAGS
compiler=$CC
compiler_D=$CC
@@ -13867,7 +13870,6 @@
GCC=$lt_save_GCC
CC=$lt_save_CC
CFLAGS=$lt_save_CFLAGS
-GDCFLAGS=$lt_save_DFLAGS
GDCFLAGS=$gdc_save_DFLAGS