1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/build/autoconf/arch.m4 Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,261 @@
1.4 +dnl This Source Code Form is subject to the terms of the Mozilla Public
1.5 +dnl License, v. 2.0. If a copy of the MPL was not distributed with this
1.6 +dnl file, You can obtain one at http://mozilla.org/MPL/2.0/.
1.7 +
1.8 +AC_DEFUN([MOZ_ARCH_OPTS],
1.9 +[
1.10 +
1.11 +dnl ========================================================
1.12 +dnl = ARM toolchain tweaks
1.13 +dnl ========================================================
1.14 +
1.15 +MOZ_THUMB=toolchain-default
1.16 +MOZ_THUMB_INTERWORK=toolchain-default
1.17 +MOZ_FPU=toolchain-default
1.18 +MOZ_FLOAT_ABI=toolchain-default
1.19 +MOZ_SOFT_FLOAT=toolchain-default
1.20 +MOZ_ALIGN=toolchain-default
1.21 +
1.22 +MOZ_ARG_WITH_STRING(arch,
1.23 +[ --with-arch=[[type|toolchain-default]]
1.24 + Use specific CPU features (-march=type). Resets
1.25 + thumb, fpu, float-abi, etc. defaults when set],
1.26 + if test -z "$GNU_CC"; then
1.27 + AC_MSG_ERROR([--with-arch is not supported on non-GNU toolchains])
1.28 + fi
1.29 + MOZ_ARCH=$withval)
1.30 +
1.31 +if test -z "$MOZ_ARCH"; then
1.32 + dnl Defaults
1.33 + case "${CPU_ARCH}-${OS_TARGET}" in
1.34 + arm-Android)
1.35 + MOZ_THUMB=yes
1.36 + MOZ_ARCH=armv7-a
1.37 + MOZ_FPU=vfp
1.38 + MOZ_FLOAT_ABI=softfp
1.39 + MOZ_ALIGN=no
1.40 + ;;
1.41 + arm-Darwin)
1.42 + MOZ_ARCH=toolchain-default
1.43 + MOZ_THUMB=yes
1.44 + ;;
1.45 + esac
1.46 +fi
1.47 +
1.48 +if test "$MOZ_ARCH" = "armv6" -a "$OS_TARGET" = "Android"; then
1.49 + MOZ_FPU=vfp
1.50 +fi
1.51 +
1.52 +MOZ_ARG_WITH_STRING(thumb,
1.53 +[ --with-thumb[[=yes|no|toolchain-default]]]
1.54 +[ Use Thumb instruction set (-mthumb)],
1.55 + if test -z "$GNU_CC"; then
1.56 + AC_MSG_ERROR([--with-thumb is not supported on non-GNU toolchains])
1.57 + fi
1.58 + MOZ_THUMB=$withval)
1.59 +
1.60 +MOZ_ARG_WITH_STRING(thumb-interwork,
1.61 +[ --with-thumb-interwork[[=yes|no|toolchain-default]]
1.62 + Use Thumb/ARM instuctions interwork (-mthumb-interwork)],
1.63 + if test -z "$GNU_CC"; then
1.64 + AC_MSG_ERROR([--with-thumb-interwork is not supported on non-GNU toolchains])
1.65 + fi
1.66 + MOZ_THUMB_INTERWORK=$withval)
1.67 +
1.68 +MOZ_ARG_WITH_STRING(fpu,
1.69 +[ --with-fpu=[[type|toolchain-default]]
1.70 + Use specific FPU type (-mfpu=type)],
1.71 + if test -z "$GNU_CC"; then
1.72 + AC_MSG_ERROR([--with-fpu is not supported on non-GNU toolchains])
1.73 + fi
1.74 + MOZ_FPU=$withval)
1.75 +
1.76 +MOZ_ARG_WITH_STRING(float-abi,
1.77 +[ --with-float-abi=[[type|toolchain-default]]
1.78 + Use specific arm float ABI (-mfloat-abi=type)],
1.79 + if test -z "$GNU_CC"; then
1.80 + AC_MSG_ERROR([--with-float-abi is not supported on non-GNU toolchains])
1.81 + fi
1.82 + MOZ_FLOAT_ABI=$withval)
1.83 +
1.84 +MOZ_ARG_WITH_STRING(soft-float,
1.85 +[ --with-soft-float[[=yes|no|toolchain-default]]
1.86 + Use soft float library (-msoft-float)],
1.87 + if test -z "$GNU_CC"; then
1.88 + AC_MSG_ERROR([--with-soft-float is not supported on non-GNU toolchains])
1.89 + fi
1.90 + MOZ_SOFT_FLOAT=$withval)
1.91 +
1.92 +case "$MOZ_ARCH" in
1.93 +toolchain-default|"")
1.94 + arch_flag=""
1.95 + ;;
1.96 +*)
1.97 + arch_flag="-march=$MOZ_ARCH"
1.98 + ;;
1.99 +esac
1.100 +
1.101 +case "$MOZ_THUMB" in
1.102 +yes)
1.103 + MOZ_THUMB2=1
1.104 + thumb_flag="-mthumb"
1.105 + ;;
1.106 +no)
1.107 + MOZ_THUMB2=
1.108 + thumb_flag="-marm"
1.109 + ;;
1.110 +*)
1.111 + _SAVE_CFLAGS="$CFLAGS"
1.112 + CFLAGS="$arch_flag"
1.113 + AC_TRY_COMPILE([],[return sizeof(__thumb2__);],
1.114 + MOZ_THUMB2=1,
1.115 + MOZ_THUMB2=)
1.116 + CFLAGS="$_SAVE_CFLAGS"
1.117 + thumb_flag=""
1.118 + ;;
1.119 +esac
1.120 +
1.121 +if test "$MOZ_THUMB2" = 1; then
1.122 + AC_DEFINE(MOZ_THUMB2)
1.123 +fi
1.124 +
1.125 +case "$MOZ_THUMB_INTERWORK" in
1.126 +yes)
1.127 + thumb_interwork_flag="-mthumb-interwork"
1.128 + ;;
1.129 +no)
1.130 + thumb_interwork_flag="-mno-thumb-interwork"
1.131 + ;;
1.132 +*) # toolchain-default
1.133 + thumb_interwork_flag=""
1.134 + ;;
1.135 +esac
1.136 +
1.137 +case "$MOZ_FPU" in
1.138 +toolchain-default|"")
1.139 + fpu_flag=""
1.140 + ;;
1.141 +*)
1.142 + fpu_flag="-mfpu=$MOZ_FPU"
1.143 + ;;
1.144 +esac
1.145 +
1.146 +case "$MOZ_FLOAT_ABI" in
1.147 +toolchain-default|"")
1.148 + float_abi_flag=""
1.149 + ;;
1.150 +*)
1.151 + float_abi_flag="-mfloat-abi=$MOZ_FLOAT_ABI"
1.152 + ;;
1.153 +esac
1.154 +
1.155 +case "$MOZ_SOFT_FLOAT" in
1.156 +yes)
1.157 + soft_float_flag="-msoft-float"
1.158 + ;;
1.159 +no)
1.160 + soft_float_flag="-mno-soft-float"
1.161 + ;;
1.162 +*) # toolchain-default
1.163 + soft_float_flag=""
1.164 + ;;
1.165 +esac
1.166 +
1.167 +case "$MOZ_ALIGN" in
1.168 +no)
1.169 + align_flag="-mno-unaligned-access"
1.170 + ;;
1.171 +yes)
1.172 + align_flag="-munaligned-access"
1.173 + ;;
1.174 +*)
1.175 + align_flag=""
1.176 + ;;
1.177 +esac
1.178 +
1.179 +if test -n "$align_flag"; then
1.180 + _SAVE_CFLAGS="$CFLAGS"
1.181 + CFLAGS="$CFLAGS $align_flag"
1.182 + AC_MSG_CHECKING(whether alignment flag ($align_flag) is supported)
1.183 + AC_TRY_COMPILE([],[],,align_flag="")
1.184 + CFLAGS="$_SAVE_CFLAGS"
1.185 +fi
1.186 +
1.187 +dnl Use echo to avoid accumulating space characters
1.188 +all_flags=`echo $arch_flag $thumb_flag $thumb_interwork_flag $fpu_flag $float_abi_flag $soft_float_flag $align_flag`
1.189 +if test -n "$all_flags"; then
1.190 + _SAVE_CFLAGS="$CFLAGS"
1.191 + CFLAGS="$all_flags"
1.192 + AC_MSG_CHECKING(whether the chosen combination of compiler flags ($all_flags) works)
1.193 + AC_TRY_COMPILE([],[return 0;],
1.194 + AC_MSG_RESULT([yes]),
1.195 + AC_MSG_ERROR([no]))
1.196 +
1.197 + CFLAGS="$_SAVE_CFLAGS $all_flags"
1.198 + CXXFLAGS="$CXXFLAGS $all_flags"
1.199 + ASFLAGS="$ASFLAGS $all_flags"
1.200 + if test -n "$thumb_flag"; then
1.201 + LDFLAGS="$LDFLAGS $thumb_flag"
1.202 + fi
1.203 +fi
1.204 +
1.205 +AC_SUBST(MOZ_THUMB2)
1.206 +
1.207 +if test "$CPU_ARCH" = "arm"; then
1.208 + AC_MSG_CHECKING(for ARM SIMD support in compiler)
1.209 + # We try to link so that this also fails when
1.210 + # building with LTO.
1.211 + AC_TRY_LINK([],
1.212 + [asm("uqadd8 r1, r1, r2");],
1.213 + result="yes", result="no")
1.214 + AC_MSG_RESULT("$result")
1.215 + if test "$result" = "yes"; then
1.216 + AC_DEFINE(HAVE_ARM_SIMD)
1.217 + HAVE_ARM_SIMD=1
1.218 + fi
1.219 +
1.220 + AC_MSG_CHECKING(ARM version support in compiler)
1.221 + dnl Determine the target ARM architecture (5 for ARMv5, v5T, v5E, etc.; 6 for ARMv6, v6K, etc.)
1.222 + ARM_ARCH=`${CC-cc} ${CFLAGS} -dM -E - < /dev/null | sed -n 's/.*__ARM_ARCH_\([[0-9]][[0-9]]*\).*/\1/p'`
1.223 + AC_MSG_RESULT("$ARM_ARCH")
1.224 +
1.225 + AC_MSG_CHECKING(for ARM NEON support in compiler)
1.226 + # We try to link so that this also fails when
1.227 + # building with LTO.
1.228 + AC_TRY_LINK([],
1.229 + [asm(".fpu neon\n vadd.i8 d0, d0, d0");],
1.230 + result="yes", result="no")
1.231 + AC_MSG_RESULT("$result")
1.232 + if test "$result" = "yes"; then
1.233 + AC_DEFINE(HAVE_ARM_NEON)
1.234 + HAVE_ARM_NEON=1
1.235 +
1.236 + dnl We don't need to build NEON support if we're targetting a non-NEON device.
1.237 + dnl This matches media/webrtc/trunk/webrtc/build/common.gypi.
1.238 + if test -n "$ARM_ARCH"; then
1.239 + if test "$ARM_ARCH" -lt 7; then
1.240 + BUILD_ARM_NEON=
1.241 + else
1.242 + AC_DEFINE(BUILD_ARM_NEON)
1.243 + BUILD_ARM_NEON=1
1.244 + fi
1.245 + fi
1.246 + fi
1.247 +
1.248 +fi # CPU_ARCH = arm
1.249 +
1.250 +AC_SUBST(HAVE_ARM_SIMD)
1.251 +AC_SUBST(HAVE_ARM_NEON)
1.252 +AC_SUBST(BUILD_ARM_NEON)
1.253 +AC_SUBST(ARM_ARCH)
1.254 +
1.255 +if test -n "$MOZ_ARCH"; then
1.256 + NSPR_CONFIGURE_ARGS="$NSPR_CONFIGURE_ARGS --with-arch=$MOZ_ARCH"
1.257 + NSPR_CONFIGURE_ARGS="$NSPR_CONFIGURE_ARGS --with-thumb=$MOZ_THUMB"
1.258 + NSPR_CONFIGURE_ARGS="$NSPR_CONFIGURE_ARGS --with-thumb-interwork=$MOZ_THUMB_INTERWORK"
1.259 + NSPR_CONFIGURE_ARGS="$NSPR_CONFIGURE_ARGS --with-fpu=$MOZ_FPU"
1.260 + NSPR_CONFIGURE_ARGS="$NSPR_CONFIGURE_ARGS --with-float-abi=$MOZ_FLOAT_ABI"
1.261 + NSPR_CONFIGURE_ARGS="$NSPR_CONFIGURE_ARGS --with-soft-float=$MOZ_SOFT_FLOAT"
1.262 +fi
1.263 +
1.264 +])
