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-rw-r--r--util/xcompile/xcompile249
1 files changed, 169 insertions, 80 deletions
diff --git a/util/xcompile/xcompile b/util/xcompile/xcompile
index 3930460f02..558f3f8b6b 100644
--- a/util/xcompile/xcompile
+++ b/util/xcompile/xcompile
@@ -3,6 +3,7 @@
# This file is part of the coreboot project.
#
# Copyright (C) 2007-2010 coresystems GmbH
+# Copyright (C) 2012 Google Inc
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
@@ -18,104 +19,192 @@
# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
#
-testcc()
-{
- echo "_start(void) {}" > .$$$$.c
- $1 -nostdlib -Werror $2 .$$$$.c -o .$$$$.tmp 2>/dev/null >/dev/null
- ret=$?
- rm -f .$$$$.c .$$$$.tmp
- return $ret
+TMPFILE=""
+
+die() {
+ echo "ERROR: $*" >&2
+ exit 1
}
-for make in make gmake gnumake; do
- if [ "`$make --version 2>/dev/null | grep -c GNU`" -gt 0 ]; then
- MAKE=$make
- break
+clean_up() {
+ if [ -n "$TMPFILE" ]; then
+ rm -f "$TMPFILE" "$TMPFILE.c" "$TMPFILE.o"
fi
-done
+}
-GCCPREFIX=invalid
-XGCCPATH=${1:-"`pwd`/util/crossgcc/xgcc/bin/"}
-echo '# XGCCPATH='${XGCCPATH}
-TMPFILE=`mktemp /tmp/temp.XXXX 2>/dev/null || echo /tmp/temp.78gOIUGz`
-touch $TMPFILE
-
-# This loops over all supported architectures in TARCH
-TARCH=('i386' 'x86_64')
-TWIDTH=32
-for search_for in "${TARCH[@]}"; do
- TARCH_SEARCH=("${TARCH_SEARCH[@]}" ${XGCCPATH}${search_for}-elf- ${search_for}-elf-)
-done
-echo '# TARCH_SEARCH='${TARCH_SEARCH[@]}
+program_exists() {
+ type "$1" >/dev/null 2>&1
+}
+
+testcc() {
+ local tmp_c="$TMPFILE.c"
+ local tmp_o="$TMPFILE.o"
+ rm -f "$tmp_c" "$tmp_o"
+ echo "_start(void) {}" >"$tmp_c"
+ "$1" -nostdlib -Werror $2 "$tmp_c" -o "$tmp_o" >/dev/null 2>&1
+}
+
+testas() {
+ local gccprefixes="$1"
+ local twidth="$2"
+ local arch="$3"
+ local use_dash_twidth="$4"
+ local obj_file="$TMPFILE.o"
+ local full_arch="elf$twidth-$arch"
+
+ rm -f "$obj_file"
+ [ -n "$use_dash_twidth" ] && use_dash_twidth="--$twidth"
+ ${gccprefixes}as $use_dash_twidth -o "$obj_file" $TMPFILE 2>/dev/null ||
+ return 1
+
+ # Check output content type.
+ local obj_type="$(${gccprefixes}objdump -p $obj_file)"
+ local obj_arch="$(expr "$obj_type" : '.*format \(.[a-z0-9-]*\)')"
+ [ "$obj_arch" = "$full_arch" ] || return 1
+
+ # Architecture matched.
+ GCCPREFIX="$gccprefixes"
+
+ if [ -z "$use_dash_twidth" ]; then
+ ASFLAGS=""
+ CFLAGS=""
+ LDFLAGS=""
+ else
+ ASFLAGS="--$twidth"
+ CFLAGS="-m$twidth"
+ LDFLAGS="-b $full_arch"
-for gccprefixes in "${TARCH_SEARCH[@]}" ""; do
- if ! which ${gccprefixes}as 2>/dev/null >/dev/null; then
- continue
- fi
- rm -f ${TMPFILE}.o
- if ${gccprefixes}as -o ${TMPFILE}.o ${TMPFILE}; then
- TYPE=`${gccprefixes}objdump -p ${TMPFILE}.o`
- if [ ${TYPE##* } == "elf${TWIDTH}-${TARCH}" ]; then
- GCCPREFIX=$gccprefixes
- ASFLAGS=
- CFLAGS=
- LDFLAGS=
- break
- fi
- fi
- if ${gccprefixes}as --32 -o ${TMPFILE}.o ${TMPFILE}; then
- TYPE=`${gccprefixes}objdump -p ${TMPFILE}.o`
- if [ ${TYPE##* } == "elf${TWIDTH}-${TARCH}" ]; then
- GCCPREFIX=$gccprefixes
- ASFLAGS=--32
- CFLAGS="-m32 -Wl,-b,elf32-i386 -Wl,-melf_i386 "
- LDFLAGS="-b elf32-i386 -melf_i386"
- break
- fi
fi
-done
-rm -f $TMPFILE ${TMPFILE}.o
-if [ "$GCCPREFIX" = "invalid" ]; then
- echo '$(error no suitable gcc found)'
- exit 1
-fi
+ # Special parameters only available in dash_twidth mode.
+ [ -n "$use_dash_twidth" ] && case "$full_arch" in
+ "elf32-i386" )
+ LDFLAGS="$LDFLAGS -melf_i386"
+ CFLAGS="$CFLAGS -Wl,-b,elf32-i386 -Wl,-melf_i386"
+ ;;
+ esac
-CC="${GCCPREFIX}gcc"
-testcc "$CC" "$CFLAGS-Wa,--divide " && CFLAGS="$CFLAGS-Wa,--divide "
-testcc "$CC" "$CFLAGS-fno-stack-protector " && CFLAGS="$CFLAGS-fno-stack-protector "
-testcc "$CC" "$CFLAGS-Wl,--build-id=none " && CFLAGS="$CFLAGS-Wl,--build-id=none "
-# GCC 4.6 is much more picky about unused variables. Turn off it's warnings for
-# now:
-testcc "$CC" "$CFLAGS-Wno-unused-but-set-variable " && \
- CFLAGS="$CFLAGS-Wno-unused-but-set-variable "
+ return 0
+}
-if which gcc 2>/dev/null >/dev/null; then
- HOSTCC=gcc
-else
- HOSTCC=cc
-fi
+detect_special_flags() {
+ local architecture="$1"
+ # GCC 4.6 is much more picky about unused variables.
+ # Turn off it's warnings for now:
+ testcc "$CC" "$CFLAGS -Wno-unused-but-set-variable " &&
+ CFLAGS="$CFLAGS -Wno-unused-but-set-variable "
+
+ # Use bfd linker instead of gold if available:
+ testcc "$CC" "$CFLAGS -fuse-ld=bfd" &&
+ CFLAGS="$CFLAGS -fuse-ld=bfd" && LINKER_SUFFIX='.bfd'
-if [ "`${XGCCPATH}/iasl 2>/dev/null | grep -c ACPI`" -gt 0 ]; then
+ testcc "$CC" "$CFLAGS -Wa,--divide" &&
+ CFLAGS="$CFLAGS -Wa,--divide"
+ testcc "$CC" "$CFLAGS -fno-stack-protector"&&
+ CFLAGS="$CFLAGS -fno-stack-protector"
+ testcc "$CC" "$CFLAGS -Wl,--build-id=none" &&
+ CFLAGS="$CFLAGS -Wl,--build-id=none"
+
+ case "$architecture" in
+ arm )
+ # testcc "$CC" "$CFLAGS -mcpu=cortex-a9" &&
+ # CFLAGS="$CFLAGS -mcpu=cortex-a9"
+ testcc "$CC" "\
+$CFLAGS -ffixed-r8 -msoft-float -marm -mabi=aapcs-linux \
+-mno-thumb-interwork -march=armv7 -mno-thumb-interwork" && CFLAGS="\
+$CFLAGS -ffixed-r8 -msoft-float -marm -mabi=aapcs-linux \
+-mno-thumb-interwork -march=armv7 -mno-thumb-interwork"
+ ;;
+ esac
+}
+
+report_arch_toolchain() {
+ cat <<EOF
+# elf${TWIDTH}-${TARCH} toolchain (${GCCPREFIX}gcc)
+CC_${TARCH}:=${GCCPREFIX}gcc ${CFLAGS}
+AS_${TARCH}:=${GCCPREFIX}as ${ASFLAGS}
+LD_${TARCH}:=${GCCPREFIX}ld ${LDFLAGS}
+NM_${TARCH}:=${GCCPREFIX}nm
+OBJCOPY_${TARCH}:=${GCCPREFIX}objcopy
+OBJDUMP_${TARCH}:=${GCCPREFIX}objdump
+READELF_${TARCH}:=${GCCPREFIX}readelf
+STRIP_${TARCH}:=${GCCPREFIX}strip
+AR_${TARCH}:=${GCCPREFIX}ar
+
+EOF
+}
+
+# Create temporary file(s).
+TMPFILE="$(mktemp /tmp/temp.XXXX 2>/dev/null || echo /tmp/temp.78gOIUGz)"
+touch "$TMPFILE"
+trap clean_up EXIT
+
+# Architecture definition
+SUPPORTED_ARCHITECTURE="x86 arm"
+
+# ARM Architecture
+TARCH_arm="littlearm"
+TCLIST_arm="littlearm"
+TWIDTH_arm="32"
+
+# X86 Architecture
+TARCH_x86="i386"
+TCLIST_x86="i386 x86_64"
+TWIDTH_x86="32"
+
+# This loops over all supported architectures.
+for architecture in $SUPPORTED_ARCHITECTURE; do
+ GCCPREFIX="invalid"
+ TARCH="$(eval echo \$TARCH_$architecture)"
+ TCLIST="$(eval echo \$TCLIST_$architecture)"
+ TWIDTH="$(eval echo \$TWIDTH_$architecture)"
+ [ -z "$TARCH" -o -z "$TCLIST" -o -z "$TWIDTH" ] &&
+ die "Missing architecture definition for $architecture."
+
+ # To override toolchain, define CROSS_COMPILE_$arch or CROSS_COMPILE as
+ # environment variable.
+ # Ex: CROSS_COMPILE_arm="armv7a-cros-linux-gnueabi-"
+ # CROSS_COMPILE_x86="i686-pc-linux-gnu-"
+ search="$(eval echo \$CROSS_COMPILE_$architecture 2>/dev/null)"
+ search="$search $CROSS_COMPILE"
+ for toolchain in $TCLIST; do
+ search="$search $XGCCPATH$toolchain-elf-"
+ search="$search $toolchain-elf-"
+ done
+ echo "# $architecture TARCH_SEARCH=$search"
+
+ # Search toolchain by checking assembler capability.
+ for gccprefixes in $search ""; do
+ program_exists "${gccprefixes}as" || continue
+ testas "$gccprefixes" "$TWIDTH" "$TARCH" "" && break
+ testas "$gccprefixes" "$TWIDTH" "$TARCH" "TRUE" && break
+ done
+
+ if [ "$GCCPREFIX" = "invalid" ]; then
+ echo "Warning: no suitable GCC for $architecture." >&2
+ continue
+ fi
+ CC="${GCCPREFIX}"gcc
+
+ detect_special_flags "$architecture"
+ report_arch_toolchain
+done
+
+if [ "$(${XGCCPATH}/iasl 2>/dev/null | grep -c ACPI)" -gt 0 ]; then
IASL=${XGCCPATH}iasl
else
IASL=iasl
fi
-cat << EOF
-# elf${TWIDTH}-${TARCH} toolchain
-AS:=${GCCPREFIX}as ${ASFLAGS}
-CC:=${GCCPREFIX}gcc ${CFLAGS}
-AR:=${GCCPREFIX}ar
-LD:=${GCCPREFIX}ld ${LDFLAGS}
-STRIP:=${GCCPREFIX}strip
-NM:=${GCCPREFIX}nm
-OBJCOPY:=${GCCPREFIX}objcopy
-OBJDUMP:=${GCCPREFIX}objdump
+if program_exists gcc; then
+ HOSTCC=gcc
+else
+ HOSTCC=cc
+fi
+cat <<EOF
IASL:=${IASL}
# native toolchain
HOSTCC:=${HOSTCC}
EOF
-