tests/tcg: move compiler tests to Makefiles

Further decoupling of tests/tcg from the main QEMU Makefile, and making
the build more similar between the cross compiler case and the vetted
container images.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Message-Id: <20220929114231.583801-25-alex.bennee@linaro.org>

configure

@@ -2490,73 +2490,11 @@ for target in $target_list; do
 
   probe_target_compiler $target
   if test $got_cross_cc = yes; then
-      # Test for compiler features for optional tests. We only do this
-      # for cross compilers because ensuring the docker containers based
-      # compilers is a requirememt for adding a new test that needs a
-      # compiler feature.
-
-      echo "BUILD_STATIC=$build_static" >> "$config_target_mak"
       write_target_makefile >> "$config_target_mak"
-      case $target in
-          aarch64-*)
-              if do_compiler "$target_cc" $target_cflags \
-                             -march=armv8.1-a+sve -o $TMPE $TMPC; then
-                  echo "CROSS_CC_HAS_SVE=y" >> "$config_target_mak"
-              fi
-              if do_compiler "$target_cc" $target_cflags \
-                             -march=armv8.1-a+sve2 -o $TMPE $TMPC; then
-                  echo "CROSS_CC_HAS_SVE2=y" >> "$config_target_mak"
-              fi
-              if do_compiler "$target_cc" $target_cflags \
-                             -march=armv8.3-a -o $TMPE $TMPC; then
-                  echo "CROSS_CC_HAS_ARMV8_3=y" >> "$config_target_mak"
-              fi
-              if do_compiler "$target_cc" $target_cflags \
-                             -mbranch-protection=standard -o $TMPE $TMPC; then
-                  echo "CROSS_CC_HAS_ARMV8_BTI=y" >> "$config_target_mak"
-              fi
-              if do_compiler "$target_cc" $target_cflags \
-                             -march=armv8.5-a+memtag -o $TMPE $TMPC; then
-                  echo "CROSS_CC_HAS_ARMV8_MTE=y" >> "$config_target_mak"
-              fi
-              ;;
-          ppc*)
-              if do_compiler "$target_cc" $target_cflags \
-                             -mpower8-vector -o $TMPE $TMPC; then
-                  echo "CROSS_CC_HAS_POWER8_VECTOR=y" >> "$config_target_mak"
-              fi
-              if do_compiler "$target_cc" $target_cflags \
-                             -mpower10 -o $TMPE $TMPC; then
-                  echo "CROSS_CC_HAS_POWER10=y" >> "$config_target_mak"
-              fi
-              ;;
-          i386-linux-user)
-              if do_compiler "$target_cc" $target_cflags \
-                             -Werror -fno-pie -o $TMPE $TMPC; then
-                  echo "CROSS_CC_HAS_I386_NOPIE=y" >> "$config_target_mak"
-              fi
-              ;;
-      esac
   elif test -n "$container_image"; then
+      build_static=y
       echo "build-tcg-tests-$target: docker-image-$container_image" >> $makefile
-      echo "BUILD_STATIC=y" >> "$config_target_mak"
       write_container_target_makefile >> "$config_target_mak"
-      case $target in
-          aarch64-*)
-              echo "CROSS_CC_HAS_SVE=y" >> "$config_target_mak"
-              echo "CROSS_CC_HAS_SVE2=y" >> "$config_target_mak"
-              echo "CROSS_CC_HAS_ARMV8_3=y" >> "$config_target_mak"
-              echo "CROSS_CC_HAS_ARMV8_BTI=y" >> "$config_target_mak"
-              echo "CROSS_CC_HAS_ARMV8_MTE=y" >> "$config_target_mak"
-              ;;
-          ppc*)
-              echo "CROSS_CC_HAS_POWER8_VECTOR=y" >> "$config_target_mak"
-              echo "CROSS_CC_HAS_POWER10=y" >> "$config_target_mak"
-              ;;
-          i386-linux-user)
-              echo "CROSS_CC_HAS_I386_NOPIE=y" >> "$config_target_mak"
-              ;;
-      esac
       got_cross_cc=yes
   fi
   if test $got_cross_cc = yes; then
@@ -2565,6 +2503,7 @@ for target in $target_list; do
       ln -sf "../config-$target.mak" "tests/tcg/$target/config-target.mak"
       echo "TARGET=$target" >> "$config_target_mak"
       echo "QEMU=$PWD/$qemu" >> "$config_target_mak"
+      echo "BUILD_STATIC=$build_static" >> "$config_target_mak"
       echo "run-tcg-tests-$target: $qemu\$(EXESUF)" >> $makefile
       tcg_tests_targets="$tcg_tests_targets $target"
   fi

tests/tcg/Makefile.target

@@ -40,10 +40,18 @@ endif
 
 # for including , in command strings
 COMMA := ,
+NULL :=
+SPACE := $(NULL) #
+TARGET_PREFIX=tests/tcg/$(TARGET):$(SPACE)
 
 quiet-@ = $(if $(V),,@$(if $1,printf "  %-7s %s\n" "$(strip $1)" "$(strip $2)" && ))
 quiet-command = $(call quiet-@,$2,$3)$1
 
+cc-test = $(CC) -Werror $1 -c -o /dev/null -xc /dev/null >/dev/null 2>&1
+cc-option = if $(call cc-test, $1); then \
+    echo "$(TARGET_PREFIX)$1 detected" && echo "$(strip $2)=y" >&3; else \
+    echo "$(TARGET_PREFIX)$1 not detected"; fi
+
 # $1 = test name, $2 = cmd, $3 = desc
 ifeq ($(filter %-softmmu, $(TARGET)),)
 run-test = $(call quiet-command, timeout --foreground $(TIMEOUT) $2 > $1.out, \
@@ -190,4 +198,4 @@ clean:
 	rm -f $(TESTS) *.o $(CLEANFILES)
 
 distclean:
-	rm -f config-target.mak ../config-$(TARGET).mak
+	rm -f config-cc.mak config-target.mak ../config-$(TARGET).mak

tests/tcg/aarch64/Makefile.softmmu-target

@@ -19,6 +19,11 @@ EXTRA_RUNS+=$(MULTIARCH_RUNS)
 CFLAGS+=-nostdlib -ggdb -O0 $(MINILIB_INC)
 LDFLAGS+=-static -nostdlib $(CRT_OBJS) $(MINILIB_OBJS) -lgcc
 
+config-cc.mak: Makefile
+	$(quiet-@)( \
+	    $(call cc-option,-march=armv8.3-a, CROSS_CC_HAS_ARMV8_3)) 3> config-cc.mak
+-include config-cc.mak
+
 # building head blobs
 .PRECIOUS: $(CRT_OBJS)
 

tests/tcg/aarch64/Makefile.target

@@ -17,6 +17,15 @@ run-fcvt: fcvt
 	$(call run-test,$<,$(QEMU) $<, "$< on $(TARGET_NAME)")
 	$(call diff-out,$<,$(AARCH64_SRC)/fcvt.ref)
 
+config-cc.mak: Makefile
+	$(quiet-@)( \
+	    $(call cc-option,-march=armv8.1-a+sve,          CROSS_CC_HAS_SVE); \
+	    $(call cc-option,-march=armv8.1-a+sve2,         CROSS_CC_HAS_SVE2); \
+	    $(call cc-option,-march=armv8.3-a,              CROSS_CC_HAS_ARMV8_3); \
+	    $(call cc-option,-mbranch-protection=standard,  CROSS_CC_HAS_ARMV8_BTI); \
+	    $(call cc-option,-march=armv8.5-a+memtag,       CROSS_CC_HAS_ARMV8_MTE)) 3> config-cc.mak
+-include config-cc.mak
+
 # Pauth Tests
 ifneq ($(CROSS_CC_HAS_ARMV8_3),)
 AARCH64_TESTS += pauth-1 pauth-2 pauth-4 pauth-5

tests/tcg/i386/Makefile.target

@@ -5,6 +5,12 @@ I386_SRC=$(SRC_PATH)/tests/tcg/i386
 # Set search path for all sources
 VPATH 		+= $(I386_SRC)
 
+config-cc.mak: Makefile
+	$(quiet-@)( \
+          $(call cc-option,-fno-pie, CROSS_CC_HAS_I386_NOPIE)) 3> config-cc.mak
+
+-include config-cc.mak
+
 I386_SRCS=$(notdir $(wildcard $(I386_SRC)/*.c))
 ALL_X86_TESTS=$(I386_SRCS:.c=)
 SKIP_I386_TESTS=test-i386-ssse3 test-avx test-3dnow test-mmx

tests/tcg/ppc64/Makefile.target

@@ -4,6 +4,13 @@
 
 VPATH += $(SRC_PATH)/tests/tcg/ppc64
 
+config-cc.mak: Makefile
+	$(quiet-@)( \
+	    $(call cc-option,-mpower8-vector,   CROSS_CC_HAS_POWER8_VECTOR); \
+	    $(call cc-option,-mpower10,         CROSS_CC_HAS_POWER10)) 3> config-cc.mak
+
+-include config-cc.mak
+
 ifneq ($(CROSS_CC_HAS_POWER8_VECTOR),)
 PPC64_TESTS=bcdsub non_signalling_xscv
 endif