build: try both native and cross compilers
Configure is trying to fall back on cross compilers for targets that can have bi-arch or bi-endian toolchains, but there are many corner cases where just checking the name can go wrong. For example, the RHEL ppc64le compiler is bi-arch and bi-endian, but multilibs are disabled. Therefore it cannot be used to build 32-bit hosted binaries like the linux-user TCG tests. Trying the cross compiler first also does not work, and an example for this is also ppc64le. The powerpc64-linux-gnu-gcc binary from the cross-gcc package is theoretically multilib-friendly, but it cannot find the CRT files on a ppc64le host, because they are not in the .../le multilib subdirectory. This can be fixed by testing both the native compiler and the cross compiler, and proceeding with the first one that works. To do this, move the compiler usability check from the tests/tcg snippet to inside probe_target_compiler and, while at it, restrict the softmmu emulation target to basically a test for the presence of libgcc. Tested-by: Matheus Kowalczuk Ferst <matheus.ferst@eldorado.org.br> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Paolo Bonzini
parent
52f08deaf8
commit
92e288fcfb
159
configure
vendored
159
configure
vendored
@ -1868,6 +1868,7 @@ fi
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: ${cross_cc_cflags_x86_64="-m64"}
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compute_target_variable() {
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eval "$2="
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if eval test -n "\"\${cross_prefix_$1}\""; then
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if eval has "\"\${cross_prefix_$1}\$3\""; then
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eval "$2=\"\${cross_prefix_$1}\$3\""
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@ -1888,6 +1889,7 @@ compute_target_variable() {
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#
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probe_target_compiler() {
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# reset all output variables
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got_cross_cc=no
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container_image=
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container_hosts=
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container_cross_cc=
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@ -1898,14 +1900,6 @@ probe_target_compiler() {
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container_cross_objcopy=
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container_cross_ranlib=
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container_cross_strip=
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target_cc=
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target_ar=
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target_as=
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target_ld=
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target_nm=
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target_objcopy=
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target_ranlib=
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target_strip=
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target_arch=${1%%-*}
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case $target_arch in
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@ -2053,22 +2047,8 @@ probe_target_compiler() {
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: ${container_cross_strip:=${container_cross_prefix}strip}
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done
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eval "target_cflags=\${cross_cc_cflags_$target_arch}"
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if eval test -n "\"\${cross_cc_$target_arch}\""; then
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if eval has "\"\${cross_cc_$target_arch}\""; then
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eval "target_cc=\"\${cross_cc_$target_arch}\""
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fi
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else
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compute_target_variable $target_arch target_cc gcc
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fi
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target_ccas=$target_cc
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compute_target_variable $target_arch target_ar ar
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compute_target_variable $target_arch target_as as
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compute_target_variable $target_arch target_ld ld
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compute_target_variable $target_arch target_nm nm
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compute_target_variable $target_arch target_objcopy objcopy
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compute_target_variable $target_arch target_ranlib ranlib
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compute_target_variable $target_arch target_strip strip
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local t try
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try=cross
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case "$target_arch:$cpu" in
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aarch64_be:aarch64 | \
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armeb:arm | \
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@ -2077,27 +2057,101 @@ probe_target_compiler() {
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ppc*:ppc64 | \
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sparc:sparc64 | \
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"$cpu:$cpu")
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: ${target_cc:=$cc}
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: ${target_ccas:=$ccas}
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: ${target_as:=$as}
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: ${target_ld:=$ld}
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: ${target_ar:=$ar}
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: ${target_as:=$as}
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: ${target_ld:=$ld}
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: ${target_nm:=$nm}
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: ${target_objcopy:=$objcopy}
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: ${target_ranlib:=$ranlib}
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: ${target_strip:=$strip}
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;;
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try='native cross' ;;
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esac
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if test -n "$target_cc"; then
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case $target_arch in
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i386|x86_64)
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if $target_cc --version | grep -qi "clang"; then
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unset target_cc
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eval "target_cflags=\${cross_cc_cflags_$target_arch}"
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for t in $try; do
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case $t in
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native)
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target_cc=$cc
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target_ccas=$ccas
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target_ar=$ar
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target_as=$as
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target_ld=$ld
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target_nm=$nm
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target_objcopy=$objcopy
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target_ranlib=$ranlib
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target_strip=$strip
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;;
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cross)
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target_cc=
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if eval test -n "\"\${cross_cc_$target_arch}\""; then
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if eval has "\"\${cross_cc_$target_arch}\""; then
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eval "target_cc=\"\${cross_cc_$target_arch}\""
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fi
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else
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compute_target_variable $target_arch target_cc gcc
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fi
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target_ccas=$target_cc
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compute_target_variable $target_arch target_ar ar
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compute_target_variable $target_arch target_as as
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compute_target_variable $target_arch target_ld ld
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compute_target_variable $target_arch target_nm nm
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compute_target_variable $target_arch target_objcopy objcopy
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compute_target_variable $target_arch target_ranlib ranlib
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compute_target_variable $target_arch target_strip strip
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;;
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esac
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if test -n "$target_cc"; then
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case $target_arch in
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i386|x86_64)
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if $target_cc --version | grep -qi "clang"; then
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continue
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fi
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;;
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esac
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elif test -n "$target_as" && test -n "$target_ld"; then
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# Special handling for assembler only targets
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case $target in
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tricore-softmmu)
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build_static=
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got_cross_cc=yes
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break
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;;
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*)
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continue
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;;
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esac
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else
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continue
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fi
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write_c_skeleton
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case $1 in
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*-softmmu)
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if do_compiler "$target_cc" $target_cflags -o $TMPO -c $TMPC &&
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do_compiler "$target_cc" $target_cflags -r -nostdlib -o "${TMPDIR1}/${TMPB}2.o" "$TMPO" -lgcc; then
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got_cross_cc=yes
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break
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fi
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;;
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*)
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if do_compiler "$target_cc" $target_cflags -o $TMPE $TMPC -static ; then
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build_static=y
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got_cross_cc=yes
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break
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fi
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if do_compiler "$target_cc" $target_cflags -o $TMPE $TMPC ; then
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build_static=
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got_cross_cc=yes
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break
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fi
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;;
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esac
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done
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if test $got_cross_cc != yes; then
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build_static=
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target_cc=
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target_ccas=
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target_cflags=
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target_ar=
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target_as=
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target_ld=
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target_nm=
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target_objcopy=
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target_ranlib=
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target_strip=
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fi
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}
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@ -2519,29 +2573,6 @@ for target in $target_list; do
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esac
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probe_target_compiler $target
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got_cross_cc=no
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unset build_static
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if test -n "$target_cc"; then
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write_c_skeleton
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if ! do_compiler "$target_cc" $target_cflags \
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-o $TMPE $TMPC -static ; then
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# For host systems we might get away with building without -static
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if do_compiler "$target_cc" $target_cflags \
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-o $TMPE $TMPC ; then
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got_cross_cc=yes
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fi
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else
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got_cross_cc=yes
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build_static=y
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fi
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elif test -n "$target_as" && test -n "$target_ld"; then
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# Special handling for assembler only tests
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case $target in
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tricore-softmmu) got_cross_cc=yes ;;
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esac
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fi
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if test $got_cross_cc = yes; then
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# Test for compiler features for optional tests. We only do this
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# for cross compilers because ensuring the docker containers based
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