rewrite i386 tests Makefile

1) compute path to i386 compiler from configure.  If it is found, run
the i386 tests.  I use macros so that this approach could be applied
for other arches as well.

2) provide an easily extensible way to add tests

Most tests fail, but at least "make test" does something meaningful.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Blue Swirl <blauwirbel@gmail.com>

1 files changed, 9 insertions, 0 deletions

diff --git a/rules.mak b/rules.mak
index c843a131e8..6dac7773d5 100644
--- a/rules.mak
+++ b/rules.mak
@@ -42,6 +42,15 @@ cc-option = $(if $(shell $(CC) $1 $2 -S -o /dev/null -xc /dev/null \
 VPATH_SUFFIXES = %.c %.h %.S %.m %.mak %.texi
 set-vpath = $(if $1,$(foreach PATTERN,$(VPATH_SUFFIXES),$(eval vpath $(PATTERN) $1)))
 
+# find-in-path
+# Usage: $(call find-in-path, prog)
+# Looks in the PATH if the argument contains no slash, else only considers one
+# specific directory.  Returns an # empty string if the program doesn't exist
+# there.
+find-in-path = $(if $(find-string /, $1), \
+        $(wildcard $1), \
+        $(wildcard $(patsubst %, %/$1, $(subst :, ,$(PATH)))))
+
 # Generate timestamp files for .h include files
 
 %.h: %.h-timestamp