зеркало из https://github.com/mozilla/mozjpeg.git
183 строки
4.2 KiB
Plaintext
183 строки
4.2 KiB
Plaintext
# AC_PROG_NASM
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# --------------------------
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# Check that NASM exists and determine flags
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AC_DEFUN([AC_PROG_NASM],[
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AC_CHECK_PROGS(NASM, [nasm nasmw yasm])
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test -z "$NASM" && AC_MSG_ERROR([no nasm (Netwide Assembler) found])
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AC_MSG_CHECKING([for object file format of host system])
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case "$host_os" in
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cygwin* | mingw* | pw32* | interix*)
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case "$host_cpu" in
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x86_64)
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objfmt='Win64-COFF'
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;;
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*)
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objfmt='Win32-COFF'
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;;
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esac
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;;
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msdosdjgpp* | go32*)
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objfmt='COFF'
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;;
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os2-emx*) # not tested
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objfmt='MSOMF' # obj
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;;
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linux*coff* | linux*oldld*)
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objfmt='COFF' # ???
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;;
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linux*aout*)
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objfmt='a.out'
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;;
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linux*)
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case "$host_cpu" in
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x86_64)
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objfmt='ELF64'
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;;
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*)
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objfmt='ELF'
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;;
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esac
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;;
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freebsd* | netbsd* | openbsd*)
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if echo __ELF__ | $CC -E - | grep __ELF__ > /dev/null; then
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objfmt='BSD-a.out'
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else
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case "$host_cpu" in
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x86_64 | amd64)
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objfmt='ELF64'
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;;
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*)
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objfmt='ELF'
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;;
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esac
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fi
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;;
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solaris* | sunos* | sysv* | sco*)
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case "$host_cpu" in
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x86_64)
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objfmt='ELF64'
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;;
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*)
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objfmt='ELF'
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;;
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esac
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;;
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darwin* | rhapsody* | nextstep* | openstep* | macos*)
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case "$host_cpu" in
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x86_64)
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objfmt='Mach-O64'
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;;
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*)
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objfmt='Mach-O'
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;;
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esac
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;;
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*)
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objfmt='ELF ?'
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;;
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esac
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AC_MSG_RESULT([$objfmt])
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if test "$objfmt" = 'ELF ?'; then
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objfmt='ELF'
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AC_MSG_WARN([unexpected host system. assumed that the format is $objfmt.])
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fi
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AC_MSG_CHECKING([for object file format specifier (NAFLAGS) ])
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case "$objfmt" in
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MSOMF) NAFLAGS='-fobj -DOBJ32';;
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Win32-COFF) NAFLAGS='-fwin32 -DWIN32';;
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Win64-COFF) NAFLAGS='-fwin64 -DWIN64 -D__x86_64__';;
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COFF) NAFLAGS='-fcoff -DCOFF';;
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a.out) NAFLAGS='-faout -DAOUT';;
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BSD-a.out) NAFLAGS='-faoutb -DAOUT';;
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ELF) NAFLAGS='-felf -DELF';;
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ELF64) NAFLAGS='-felf64 -DELF -D__x86_64__';;
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RDF) NAFLAGS='-frdf -DRDF';;
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Mach-O) NAFLAGS='-fmacho -DMACHO';;
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Mach-O64) NAFLAGS='-fmacho64 -DMACHO -D__x86_64__';;
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esac
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AC_MSG_RESULT([$NAFLAGS])
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AC_SUBST([NAFLAGS])
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AC_MSG_CHECKING([whether the assembler ($NASM $NAFLAGS) works])
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cat > conftest.asm <<EOF
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[%line __oline__ "configure"
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section .text
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global _main,main
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_main:
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main: xor eax,eax
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ret
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]EOF
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try_nasm='$NASM $NAFLAGS -o conftest.o conftest.asm'
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if AC_TRY_EVAL(try_nasm) && test -s conftest.o; then
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AC_MSG_RESULT(yes)
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else
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echo "configure: failed program was:" >&AC_FD_CC
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cat conftest.asm >&AC_FD_CC
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rm -rf conftest*
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AC_MSG_RESULT(no)
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AC_MSG_ERROR([installation or configuration problem: assembler cannot create object files.])
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fi
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AC_MSG_CHECKING([whether the linker accepts assembler output])
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try_nasm='${CC-cc} -o conftest${ac_exeext} $LDFLAGS conftest.o $LIBS 1>&AC_FD_CC'
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if AC_TRY_EVAL(try_nasm) && test -s conftest${ac_exeext}; then
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rm -rf conftest*
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AC_MSG_RESULT(yes)
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else
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rm -rf conftest*
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AC_MSG_RESULT(no)
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AC_MSG_ERROR([configuration problem: maybe object file format mismatch.])
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fi
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])
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# AC_CHECK_COMPATIBLE_ARM_ASSEMBLER_IFELSE
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# --------------------------
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# Test whether the assembler is suitable and supports NEON instructions
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AC_DEFUN([AC_CHECK_COMPATIBLE_ARM_ASSEMBLER_IFELSE],[
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ac_good_gnu_arm_assembler=no
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ac_save_CC="$CC"
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ac_save_CFLAGS="$CFLAGS"
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CFLAGS="$CCASFLAGS -x assembler-with-cpp"
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CC="$CCAS"
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AC_COMPILE_IFELSE([[
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.text
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.fpu neon
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.arch armv7a
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.object_arch armv4
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.arm
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pld [r0]
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vmovn.u16 d0, q0]], ac_good_gnu_arm_assembler=yes)
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ac_use_gas_preprocessor=no
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if test "x$ac_good_gnu_arm_assembler" = "xno" ; then
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CC="gas-preprocessor.pl $CCAS"
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AC_COMPILE_IFELSE([[
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.text
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.fpu neon
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.arch armv7a
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.object_arch armv4
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.arm
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pld [r0]
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vmovn.u16 d0, q0]], ac_use_gas_preprocessor=yes)
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fi
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CFLAGS="$ac_save_CFLAGS"
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CC="$ac_save_CC"
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if test "x$ac_use_gas_preprocessor" = "xyes" ; then
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CCAS="gas-preprocessor.pl $CCAS"
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AC_SUBST([CCAS])
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ac_good_gnu_arm_assembler=yes
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fi
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if test "x$ac_good_gnu_arm_assembler" = "xyes" ; then
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$1
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else
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$2
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fi
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])
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