re PR target/40125 (libgcc_s DLL installed in wrong directory in cross toolchain)

gcc/ChangeLog:

	PR target/40125
	* config.gcc (i[34567]86-*-pe | i[34567]86-*-cygwin*): Select suitable
	t-dlldir{,-x} fragment for build and add it to tmake_file.
	(i[34567]86-*-mingw* | x86_64-*-mingw*): Likewise.
	* Makefile.in (libgcc.mvars): Also export SHLIB_DLLDIR to libgcc.
	* config/i386/t-dlldir: New file.
	(SHLIB_DLLDIR): Define.
	* config/i386/t-dlldir-x: New file.
	(SHLIB_DLLDIR): Define.
	* config/i386/t-cygming: Error out if SHLIB_DLLDIR is not set.
	(SHLIB_INSTALL): Use it.

libgcc/ChangeLog:

	PR target/40125
	* configure.ac: Call ACX_NONCANONICAL_TARGET.
	(toolexecdir): Calculate and AC_SUBST.
	(toolexeclibdir): Likewise.
	* Makefile.in (target_noncanonical): Import.
	(toolexecdir): Likewise.
	(toolexeclibdir): Likewise.
	* configure: Regenerate.

From-SVN: r169274

6 files changed, 52 insertions, 4 deletions

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 0997cce..71ae981 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,17 @@
+2011-01-26  Dave Korn  <dave.korn.cygwin@gmail.com>
+
+	PR target/40125
+	* config.gcc (i[34567]86-*-pe | i[34567]86-*-cygwin*): Select suitable
+	t-dlldir{,-x} fragment for build and add it to tmake_file.
+	(i[34567]86-*-mingw* | x86_64-*-mingw*): Likewise.
+	* Makefile.in (libgcc.mvars): Also export SHLIB_DLLDIR to libgcc.
+	* config/i386/t-dlldir: New file.
+	(SHLIB_DLLDIR): Define.
+	* config/i386/t-dlldir-x: New file.
+	(SHLIB_DLLDIR): Define.
+	* config/i386/t-cygming: Error out if SHLIB_DLLDIR is not set.
+	(SHLIB_INSTALL): Use it.
+
 2011-01-26  Chung-Lin Tang  <cltang@codesourcery.com>
 
 	PR target/47246
diff --git a/gcc/Makefile.in b/gcc/Makefile.in
index 48b49e9..9a8262a 100644
--- a/gcc/Makefile.in
+++ b/gcc/Makefile.in
@@ -1909,6 +1909,7 @@ libgcc.mvars: config.status Makefile $(LIB2ADD) $(LIB2ADD_ST) specs \
 	echo GCC_EXTRA_PARTS = '$(GCC_EXTRA_PARTS)' >> tmp-libgcc.mvars
 	echo SHLIB_LINK = '$(subst $(GCC_FOR_TARGET),$$(GCC_FOR_TARGET),$(SHLIB_LINK))' >> tmp-libgcc.mvars
 	echo SHLIB_INSTALL = '$(SHLIB_INSTALL)' >> tmp-libgcc.mvars
+	echo SHLIB_DLLDIR = '$(SHLIB_DLLDIR)' >> tmp-libgcc.mvars
 	echo SHLIB_EXT = '$(SHLIB_EXT)' >> tmp-libgcc.mvars
 	echo SHLIB_MKMAP = '$(call srcdirify,$(SHLIB_MKMAP))' >> tmp-libgcc.mvars
 	echo SHLIB_MKMAP_OPTS = '$(SHLIB_MKMAP_OPTS)' >> tmp-libgcc.mvars
diff --git a/gcc/config.gcc b/gcc/config.gcc
index 0f6aae1..516c41f 100644
--- a/gcc/config.gcc
+++ b/gcc/config.gcc
@@ -1424,7 +1424,13 @@ i[34567]86-*-pe | i[34567]86-*-cygwin*)
 	else
 		tmake_eh_file="i386/t-sjlj-eh"
 	fi
-	tmake_file="${tmake_file} ${tmake_eh_file} i386/t-cygming i386/t-cygwin"
+	# Shared libgcc DLL install dir depends on cross/native build.
+	if test x${host} = x${target} ; then
+		tmake_dlldir_file="i386/t-dlldir"
+	else
+		tmake_dlldir_file="i386/t-dlldir-x"
+	fi
+	tmake_file="${tmake_file} ${tmake_eh_file} ${tmake_dlldir_file} i386/t-cygming i386/t-cygwin"
 	target_gtfiles="\$(srcdir)/config/i386/winnt.c"
 	extra_options="${extra_options} i386/cygming.opt"
 	extra_objs="winnt.o winnt-stubs.o"
@@ -1480,7 +1486,13 @@ i[34567]86-*-mingw* | x86_64-*-mingw*)
 	else
 		tmake_eh_file="i386/t-sjlj-eh"
 	fi
-	tmake_file="${tmake_file} ${tmake_eh_file} i386/t-cygming t-dfprules"
+	# Shared libgcc DLL install dir depends on cross/native build.
+	if test x${host} = x${target} ; then
+		tmake_dlldir_file="i386/t-dlldir"
+	else
+		tmake_dlldir_file="i386/t-dlldir-x"
+	fi
+	tmake_file="${tmake_file} ${tmake_eh_file} ${tmake_dlldir_file} i386/t-cygming t-dfprules"
         case ${target} in
                x86_64-w64-*)
                		tmake_file="${tmake_file} i386/t-mingw-w64"
diff --git a/gcc/config/i386/t-cygming b/gcc/config/i386/t-cygming
index 6d54e49..ccae237 100644
--- a/gcc/config/i386/t-cygming
+++ b/gcc/config/i386/t-cygming
@@ -72,6 +72,11 @@ SHLIB_MAP = @shlib_map_file@
 SHLIB_OBJS = @shlib_objs@
 SHLIB_DIR = @multilib_dir@/shlib
 SHLIB_SLIBDIR_QUAL = @shlib_slibdir_qual@
+# SHLIB_DLLDIR is defined by including one of either t-dlldir or t-dlldir-x
+# (native/cross build respectively) in the tmake_file list in gcc/config.gcc.
+ifndef SHLIB_DLLDIR
+$(error SHLIB_DLLDIR must be defined)
+endif
 
 SHLIB_LINK = $(LN_S) -f $(SHLIB_MAP) $(SHLIB_MAP).def && \
 	if [ ! -d $(SHLIB_DIR) ]; then \
@@ -91,9 +96,10 @@ SHLIB_LINK = $(LN_S) -f $(SHLIB_MAP) $(SHLIB_MAP).def && \
 # $(slibdir) double quoted to protect it from expansion while building
 # libgcc.mk.  We want this delayed until actual install time.
 SHLIB_INSTALL = \
-	$$(mkinstalldirs) $$(DESTDIR)$$(slibdir)$(SHLIB_SLIBDIR_QUAL); \
+	$$(mkinstalldirs) $$(DESTDIR)$$(SHLIB_DLLDIR) \
+	  $$(DESTDIR)$$(slibdir)$(SHLIB_SLIBDIR_QUAL); \
 	$(INSTALL) $(SHLIB_DIR)/$(SHLIB_SONAME) \
-	  $$(DESTDIR)$$(bindir)/$(SHLIB_SONAME); \
+	  $$(DESTDIR)$$(SHLIB_DLLDIR)/$(SHLIB_SONAME); \
 	$(INSTALL_DATA) $(SHLIB_DIR)/$(SHLIB_IMPLIB) \
 	  $$(DESTDIR)$$(slibdir)$(SHLIB_SLIBDIR_QUAL)/$(SHLIB_IMPLIB)
 SHLIB_MKMAP = $(srcdir)/mkmap-flat.awk
diff --git a/gcc/config/i386/t-dlldir b/gcc/config/i386/t-dlldir
new file mode 100644
index 0000000..a3e0331
--- /dev/null
+++ b/gcc/config/i386/t-dlldir
@@ -0,0 +1,6 @@
+
+# In a native build, target DLLs go in bindir, where they can be executed.
+# Note double quoting to prevent variables from being evaluated until install
+# time; we don't want to expand them during libgcc.mvars generation.
+
+SHLIB_DLLDIR = $$(bindir)
diff --git a/gcc/config/i386/t-dlldir-x b/gcc/config/i386/t-dlldir-x
new file mode 100644
index 0000000..07dd845
--- /dev/null
+++ b/gcc/config/i386/t-dlldir-x
@@ -0,0 +1,9 @@
+
+# In a cross build, bindir contains host not target binaries, so target DLLs
+# instead go in toolexeclibdir, alongside other target binaries and static libs.
+# Note double quoting to prevent variables from being evaluated until install
+# time; we don't want to expand them during libgcc.mvars generation, and in
+# any case, $toolexeclibdir is not defined in the gcc/ subdirectory, only in
+# target lib directories.
+
+SHLIB_DLLDIR = $$(toolexeclibdir)