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Diffstat (limited to 'tags/1.2.1/acinclude.m4')
-rw-r--r-- | tags/1.2.1/acinclude.m4 | 182 |
1 files changed, 182 insertions, 0 deletions
diff --git a/tags/1.2.1/acinclude.m4 b/tags/1.2.1/acinclude.m4 new file mode 100644 index 0000000..70e2555 --- /dev/null +++ b/tags/1.2.1/acinclude.m4 @@ -0,0 +1,182 @@ +# AC_PROG_NASM +# -------------------------- +# Check that NASM exists and determine flags +AC_DEFUN([AC_PROG_NASM],[ + +AC_CHECK_PROGS(NASM, [nasm nasmw yasm]) +test -z "$NASM" && AC_MSG_ERROR([no nasm (Netwide Assembler) found]) + +AC_MSG_CHECKING([for object file format of host system]) +case "$host_os" in + cygwin* | mingw* | pw32* | interix*) + case "$host_cpu" in + x86_64) + objfmt='Win64-COFF' + ;; + *) + objfmt='Win32-COFF' + ;; + esac + ;; + msdosdjgpp* | go32*) + objfmt='COFF' + ;; + os2-emx*) # not tested + objfmt='MSOMF' # obj + ;; + linux*coff* | linux*oldld*) + objfmt='COFF' # ??? + ;; + linux*aout*) + objfmt='a.out' + ;; + linux*) + case "$host_cpu" in + x86_64) + objfmt='ELF64' + ;; + *) + objfmt='ELF' + ;; + esac + ;; + freebsd* | netbsd* | openbsd*) + if echo __ELF__ | $CC -E - | grep __ELF__ > /dev/null; then + objfmt='BSD-a.out' + else + case "$host_cpu" in + x86_64 | amd64) + objfmt='ELF64' + ;; + *) + objfmt='ELF' + ;; + esac + fi + ;; + solaris* | sunos* | sysv* | sco*) + case "$host_cpu" in + x86_64) + objfmt='ELF64' + ;; + *) + objfmt='ELF' + ;; + esac + ;; + darwin* | rhapsody* | nextstep* | openstep* | macos*) + case "$host_cpu" in + x86_64) + objfmt='Mach-O64' + ;; + *) + objfmt='Mach-O' + ;; + esac + ;; + *) + objfmt='ELF ?' + ;; +esac + +AC_MSG_RESULT([$objfmt]) +if test "$objfmt" = 'ELF ?'; then + objfmt='ELF' + AC_MSG_WARN([unexpected host system. assumed that the format is $objfmt.]) +fi + +AC_MSG_CHECKING([for object file format specifier (NAFLAGS) ]) +case "$objfmt" in + MSOMF) NAFLAGS='-fobj -DOBJ32';; + Win32-COFF) NAFLAGS='-fwin32 -DWIN32';; + Win64-COFF) NAFLAGS='-fwin64 -DWIN64 -D__x86_64__';; + COFF) NAFLAGS='-fcoff -DCOFF';; + a.out) NAFLAGS='-faout -DAOUT';; + BSD-a.out) NAFLAGS='-faoutb -DAOUT';; + ELF) NAFLAGS='-felf -DELF';; + ELF64) NAFLAGS='-felf64 -DELF -D__x86_64__';; + RDF) NAFLAGS='-frdf -DRDF';; + Mach-O) NAFLAGS='-fmacho -DMACHO';; + Mach-O64) NAFLAGS='-fmacho64 -DMACHO -D__x86_64__';; +esac +AC_MSG_RESULT([$NAFLAGS]) +AC_SUBST([NAFLAGS]) + +AC_MSG_CHECKING([whether the assembler ($NASM $NAFLAGS) works]) +cat > conftest.asm <<EOF +[%line __oline__ "configure" + section .text + global _main,main +_main: +main: xor eax,eax + ret +]EOF +try_nasm='$NASM $NAFLAGS -o conftest.o conftest.asm' +if AC_TRY_EVAL(try_nasm) && test -s conftest.o; then + AC_MSG_RESULT(yes) +else + echo "configure: failed program was:" >&AC_FD_CC + cat conftest.asm >&AC_FD_CC + rm -rf conftest* + AC_MSG_RESULT(no) + AC_MSG_ERROR([installation or configuration problem: assembler cannot create object files.]) +fi + +AC_MSG_CHECKING([whether the linker accepts assembler output]) +try_nasm='${CC-cc} -o conftest${ac_exeext} $LDFLAGS conftest.o $LIBS 1>&AC_FD_CC' +if AC_TRY_EVAL(try_nasm) && test -s conftest${ac_exeext}; then + rm -rf conftest* + AC_MSG_RESULT(yes) +else + rm -rf conftest* + AC_MSG_RESULT(no) + AC_MSG_ERROR([configuration problem: maybe object file format mismatch.]) +fi + +]) + +# AC_CHECK_COMPATIBLE_ARM_ASSEMBLER_IFELSE +# -------------------------- +# Test whether the assembler is suitable and supports NEON instructions +AC_DEFUN([AC_CHECK_COMPATIBLE_ARM_ASSEMBLER_IFELSE],[ + ac_good_gnu_arm_assembler=no + ac_save_CC="$CC" + ac_save_CFLAGS="$CFLAGS" + CFLAGS="$CCASFLAGS -x assembler-with-cpp" + CC="$CCAS" + AC_COMPILE_IFELSE([[ + .text + .fpu neon + .arch armv7a + .object_arch armv4 + .arm + pld [r0] + vmovn.u16 d0, q0]], ac_good_gnu_arm_assembler=yes) + + ac_use_gas_preprocessor=no + if test "x$ac_good_gnu_arm_assembler" = "xno" ; then + CC="gas-preprocessor.pl $CCAS" + AC_COMPILE_IFELSE([[ + .text + .fpu neon + .arch armv7a + .object_arch armv4 + .arm + pld [r0] + vmovn.u16 d0, q0]], ac_use_gas_preprocessor=yes) + fi + CFLAGS="$ac_save_CFLAGS" + CC="$ac_save_CC" + + if test "x$ac_use_gas_preprocessor" = "xyes" ; then + CCAS="gas-preprocessor.pl $CCAS" + AC_SUBST([CCAS]) + ac_good_gnu_arm_assembler=yes + fi + + if test "x$ac_good_gnu_arm_assembler" = "xyes" ; then + $1 + else + $2 + fi +]) |