Fixing win32 gmake builds lack of debugging information problem by working around a combination MSVC & cygwin make deficiencies:

* We must use the full path to the source file when calling MSVC so that debugging information shows up in the object files.
* Because of cygwin's use of /cygdrive when using full paths, we must use a cygwin-wrapper script in some cases to allow native win32 programs to use a fully qualified cygwin path.
* We have to call configure using the full path so that $(srcdir) contains the
full path in the Makefiles. The rules have been changed for win32 so that it
always use $(srcdir)/$*.{c,cpp} as the sourcefile name even when the file is in
the cwd.  This works around both the /cygdrive issue and the msvc's path info
optimization.
* We still use the wrapper when calling rc.exe & nsinstall.  nsinstall
frequently takes multiple args and is called all over the tree so changing each
calling site is going to be expensive.	(I'll have to check  the logs again but
I think the rc wrapping can go.)
* nspr & ldap still use the wrappers for all native win32 progs.  Neither nspr
nor ldap uses the acoutput-fast.pl script to speed up the substitution of
@srcdir@ into their Makefiles so, makefile substitution will break if we use
dos-paths.
* In the handful of directories where we copy srcfiles from another directory
in lieu of using VPATHs, we have to now copy those files to $(srcdir) so that
the default rules can find them.
Bug #141834 r=leaf,wtc,dmose,mcs

1 files changed, 17 insertions, 0 deletions

diff --git a/build/cygwin-wrapper b/build/cygwin-wrapper
new file mode 100755
index 00000000..c510a7d7
--- /dev/null
+++ b/build/cygwin-wrapper
@@ -0,0 +1,17 @@
+#!/bin/sh
+#
+# Stupid wrapper to avoid win32 dospath/cygdrive issues
+#
+prog=$1
+shift
+if test -z "$prog"; then
+    exit 0
+fi
+if test "$prog" = "-up"; then
+   prog=$1
+   shift
+   args=`echo $* | sed -e 's|-I\(.\):|-I/cygdrive/\1|g;'`
+else
+   args=`echo $* | sed -e 's|/cygdrive/\(.\)/|\1:/|g;'`
+fi
+exec $prog $args