[gcc] can't build current trunk: ar: .libs/libgomp.lib: File format not recognized

[Joern Rennecke]

Quoting Christian Joensson <christian.joensson@gmail.com>:
>> -Xlinker .libs/libgomp-1.dll
>> xgcc: unrecognized option '-pthread'

Oops, we can't actually always bootstrap libgomp - we shouldn't try if it's
not in target_configdirs.

Does the cygwin build work with the attached patch?
-------------- next part --------------
2010-01-23  Joern Rennecke  <amylaar@spamcop.net>

	PR libstdc++/36101, PR libstdc++/42813
	* configure.ac (bootstrap_target_libs): Make inclusion of
	target-libgomp conditional on libgomb being in target_configdirs.
	* configure: Regenerate.

Index: configure.ac
===================================================================
--- configure.ac	(revision 156191)
+++ configure.ac	(working copy)
@@ -1744,7 +1744,7 @@ fi
 stage1_languages=,c,
 
 # Target libraries that we bootstrap.
-bootstrap_target_libs=,target-libgcc,target-libgomp,
+bootstrap_target_libs=,target-libgcc,
 
 # Figure out what language subdirectories are present.
 # Look if the user specified --enable-languages="..."; if not, use
@@ -2540,6 +2540,11 @@ fi
 target_configdirs=`echo "${target_configdirs}" | sed -e 's/target-//g'`
 build_configdirs=`echo "${build_configdirs}" | sed -e 's/build-//g'`
 
+# If we are building libgomp, bootstrap it.
+if echo " ${target_configdirs} " | grep " libgomp " > /dev/null 2>&1 ; then
+  bootstrap_target_libs=${bootstrap_target_libs}target-libgomp,
+fi
+
 # Determine whether gdb needs tk/tcl or not.
 # Use 'maybe' since enable_gdbtk might be true even if tk isn't available
 # and in that case we want gdb to be built without tk.  Ugh!
Index: configure
===================================================================
--- configure	(revision 156191)
+++ configure	(working copy)
@@ -6545,7 +6545,7 @@ fi
 stage1_languages=,c,
 
 # Target libraries that we bootstrap.
-bootstrap_target_libs=,target-libgcc,target-libgomp,
+bootstrap_target_libs=,target-libgcc,
 
 # Figure out what language subdirectories are present.
 # Look if the user specified --enable-languages="..."; if not, use
@@ -7394,6 +7394,11 @@ fi
 target_configdirs=`echo "${target_configdirs}" | sed -e 's/target-//g'`
 build_configdirs=`echo "${build_configdirs}" | sed -e 's/build-//g'`
 
+# If we are building libgomp, bootstrap it.
+if echo " ${target_configdirs} " | grep " libgomp " > /dev/null 2>&1 ; then
+  bootstrap_target_libs=${bootstrap_target_libs}target-libgomp,
+fi
+
 # Determine whether gdb needs tk/tcl or not.
 # Use 'maybe' since enable_gdbtk might be true even if tk isn't available
 # and in that case we want gdb to be built without tk.  Ugh!