зеркало из https://github.com/mozilla/gecko-dev.git
261 строка
6.8 KiB
Plaintext
261 строка
6.8 KiB
Plaintext
dnl This Source Code Form is subject to the terms of the Mozilla Public
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dnl License, v. 2.0. If a copy of the MPL was not distributed with this
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dnl file, You can obtain one at http://mozilla.org/MPL/2.0/.
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AC_DEFUN([MOZ_ARCH_OPTS],
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[
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dnl ========================================================
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dnl = ARM toolchain tweaks
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dnl ========================================================
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MOZ_THUMB=toolchain-default
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MOZ_THUMB_INTERWORK=toolchain-default
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MOZ_FPU=toolchain-default
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MOZ_FLOAT_ABI=toolchain-default
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MOZ_SOFT_FLOAT=toolchain-default
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MOZ_ALIGN=toolchain-default
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MOZ_ARG_WITH_STRING(arch,
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[ --with-arch=[[type|toolchain-default]]
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Use specific CPU features (-march=type). Resets
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thumb, fpu, float-abi, etc. defaults when set],
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if test -z "$GNU_CC"; then
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AC_MSG_ERROR([--with-arch is not supported on non-GNU toolchains])
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fi
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MOZ_ARCH=$withval)
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if test -z "$MOZ_ARCH"; then
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dnl Defaults
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case "${CPU_ARCH}-${OS_TARGET}" in
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arm-Android)
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MOZ_THUMB=yes
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MOZ_ARCH=armv7-a
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MOZ_FPU=vfp
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MOZ_FLOAT_ABI=softfp
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MOZ_ALIGN=no
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;;
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arm-Darwin)
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MOZ_ARCH=toolchain-default
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;;
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esac
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fi
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if test "$MOZ_ARCH" = "armv6" -a "$OS_TARGET" = "Android"; then
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MOZ_FPU=vfp
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fi
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MOZ_ARG_WITH_STRING(thumb,
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[ --with-thumb[[=yes|no|toolchain-default]]]
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[ Use Thumb instruction set (-mthumb)],
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if test -z "$GNU_CC"; then
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AC_MSG_ERROR([--with-thumb is not supported on non-GNU toolchains])
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fi
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MOZ_THUMB=$withval)
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MOZ_ARG_WITH_STRING(thumb-interwork,
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[ --with-thumb-interwork[[=yes|no|toolchain-default]]
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Use Thumb/ARM instuctions interwork (-mthumb-interwork)],
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if test -z "$GNU_CC"; then
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AC_MSG_ERROR([--with-thumb-interwork is not supported on non-GNU toolchains])
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fi
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MOZ_THUMB_INTERWORK=$withval)
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MOZ_ARG_WITH_STRING(fpu,
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[ --with-fpu=[[type|toolchain-default]]
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Use specific FPU type (-mfpu=type)],
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if test -z "$GNU_CC"; then
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AC_MSG_ERROR([--with-fpu is not supported on non-GNU toolchains])
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fi
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MOZ_FPU=$withval)
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MOZ_ARG_WITH_STRING(float-abi,
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[ --with-float-abi=[[type|toolchain-default]]
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Use specific arm float ABI (-mfloat-abi=type)],
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if test -z "$GNU_CC"; then
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AC_MSG_ERROR([--with-float-abi is not supported on non-GNU toolchains])
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fi
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MOZ_FLOAT_ABI=$withval)
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MOZ_ARG_WITH_STRING(soft-float,
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[ --with-soft-float[[=yes|no|toolchain-default]]
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Use soft float library (-msoft-float)],
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if test -z "$GNU_CC"; then
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AC_MSG_ERROR([--with-soft-float is not supported on non-GNU toolchains])
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fi
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MOZ_SOFT_FLOAT=$withval)
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case "$MOZ_ARCH" in
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toolchain-default|"")
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arch_flag=""
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;;
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*)
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arch_flag="-march=$MOZ_ARCH"
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;;
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esac
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case "$MOZ_THUMB" in
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yes)
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MOZ_THUMB2=1
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thumb_flag="-mthumb"
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;;
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no)
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MOZ_THUMB2=
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thumb_flag="-marm"
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;;
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*)
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_SAVE_CFLAGS="$CFLAGS"
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CFLAGS="$arch_flag"
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AC_TRY_COMPILE([],[return sizeof(__thumb2__);],
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MOZ_THUMB2=1,
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MOZ_THUMB2=)
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CFLAGS="$_SAVE_CFLAGS"
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thumb_flag=""
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;;
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esac
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if test "$MOZ_THUMB2" = 1; then
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AC_DEFINE(MOZ_THUMB2)
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fi
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case "$MOZ_THUMB_INTERWORK" in
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yes)
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thumb_interwork_flag="-mthumb-interwork"
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;;
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no)
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thumb_interwork_flag="-mno-thumb-interwork"
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;;
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*) # toolchain-default
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thumb_interwork_flag=""
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;;
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esac
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case "$MOZ_FPU" in
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toolchain-default|"")
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fpu_flag=""
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;;
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*)
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fpu_flag="-mfpu=$MOZ_FPU"
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;;
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esac
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case "$MOZ_FLOAT_ABI" in
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toolchain-default|"")
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float_abi_flag=""
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;;
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*)
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float_abi_flag="-mfloat-abi=$MOZ_FLOAT_ABI"
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;;
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esac
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case "$MOZ_SOFT_FLOAT" in
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yes)
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soft_float_flag="-msoft-float"
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;;
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no)
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soft_float_flag="-mno-soft-float"
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;;
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*) # toolchain-default
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soft_float_flag=""
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;;
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esac
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case "$MOZ_ALIGN" in
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no)
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align_flag="-mno-unaligned-access"
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;;
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yes)
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align_flag="-munaligned-access"
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;;
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*)
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align_flag=""
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;;
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esac
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if test -n "$align_flag"; then
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_SAVE_CFLAGS="$CFLAGS"
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CFLAGS="$CFLAGS $align_flag"
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AC_MSG_CHECKING(whether alignment flag ($align_flag) is supported)
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AC_TRY_COMPILE([],[],,align_flag="")
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CFLAGS="$_SAVE_CFLAGS"
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fi
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dnl Use echo to avoid accumulating space characters
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all_flags=`echo $arch_flag $thumb_flag $thumb_interwork_flag $fpu_flag $float_abi_flag $soft_float_flag $align_flag`
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if test -n "$all_flags"; then
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_SAVE_CFLAGS="$CFLAGS"
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CFLAGS="$all_flags"
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AC_MSG_CHECKING(whether the chosen combination of compiler flags ($all_flags) works)
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AC_TRY_COMPILE([],[return 0;],
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AC_MSG_RESULT([yes]),
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AC_MSG_ERROR([no]))
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CFLAGS="$_SAVE_CFLAGS $all_flags"
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CXXFLAGS="$CXXFLAGS $all_flags"
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ASFLAGS="$ASFLAGS $all_flags"
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if test -n "$thumb_flag"; then
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LDFLAGS="$LDFLAGS $thumb_flag"
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fi
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fi
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AC_SUBST(MOZ_THUMB2)
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if test "$CPU_ARCH" = "arm"; then
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AC_MSG_CHECKING(for ARM SIMD support in compiler)
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# We try to link so that this also fails when
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# building with LTO.
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AC_TRY_LINK([],
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[asm("uqadd8 r1, r1, r2");],
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result="yes", result="no")
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AC_MSG_RESULT("$result")
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if test "$result" = "yes"; then
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AC_DEFINE(HAVE_ARM_SIMD)
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HAVE_ARM_SIMD=1
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fi
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AC_MSG_CHECKING(ARM version support in compiler)
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dnl Determine the target ARM architecture (5 for ARMv5, v5T, v5E, etc.; 6 for ARMv6, v6K, etc.)
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ARM_ARCH=`${CC-cc} ${CFLAGS} -dM -E - < /dev/null | sed -n 's/.*__ARM_ARCH_\([[0-9]][[0-9]]*\).*/\1/p'`
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AC_MSG_RESULT("$ARM_ARCH")
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AC_MSG_CHECKING(for ARM NEON support in compiler)
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# We try to link so that this also fails when
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# building with LTO.
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AC_TRY_LINK([],
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[asm(".fpu neon\n vadd.i8 d0, d0, d0");],
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result="yes", result="no")
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AC_MSG_RESULT("$result")
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if test "$result" = "yes"; then
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AC_DEFINE(HAVE_ARM_NEON)
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HAVE_ARM_NEON=1
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dnl We don't need to build NEON support if we're targetting a non-NEON device.
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dnl This matches media/webrtc/trunk/webrtc/build/common.gypi.
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if test -n "$ARM_ARCH"; then
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if test "$ARM_ARCH" -lt 7; then
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BUILD_ARM_NEON=
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else
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AC_DEFINE(BUILD_ARM_NEON)
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BUILD_ARM_NEON=1
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fi
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fi
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fi
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fi # CPU_ARCH = arm
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AC_SUBST(HAVE_ARM_SIMD)
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AC_SUBST(HAVE_ARM_NEON)
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AC_SUBST(BUILD_ARM_NEON)
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AC_SUBST(ARM_ARCH)
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if test -n "$MOZ_ARCH"; then
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NSPR_CONFIGURE_ARGS="$NSPR_CONFIGURE_ARGS --with-arch=$MOZ_ARCH"
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NSPR_CONFIGURE_ARGS="$NSPR_CONFIGURE_ARGS --with-thumb=$MOZ_THUMB"
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NSPR_CONFIGURE_ARGS="$NSPR_CONFIGURE_ARGS --with-thumb-interwork=$MOZ_THUMB_INTERWORK"
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NSPR_CONFIGURE_ARGS="$NSPR_CONFIGURE_ARGS --with-fpu=$MOZ_FPU"
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NSPR_CONFIGURE_ARGS="$NSPR_CONFIGURE_ARGS --with-float-abi=$MOZ_FLOAT_ABI"
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NSPR_CONFIGURE_ARGS="$NSPR_CONFIGURE_ARGS --with-soft-float=$MOZ_SOFT_FLOAT"
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fi
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])
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