+# 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
+ ;;
+ kfreebsd* | 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([AC_LANG_SOURCE([[
+ .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 $CCAS"
+ AC_COMPILE_IFELSE([AC_LANG_SOURCE([[
+ .text
+ .fpu neon
+ .arch armv7a
+ .object_arch armv4
+ .arm
+ pld [r0]
+ vmovn.u16 d0, q0]])], ac_use_gas_preprocessor=yes)
+ fi
+ CFLAGS="$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
+ $2
+ fi
+])
+
+# AC_CHECK_COMPATIBLE_MIPSEL_ASSEMBLER_IFELSE
+# --------------------------
+# Test whether the assembler is suitable and supports MIPS instructions
+AC_DEFUN([AC_CHECK_COMPATIBLE_MIPSEL_ASSEMBLER_IFELSE],[
+ have_mips_dspr2=no
+ ac_save_CFLAGS="$CFLAGS"
+ CFLAGS="$CCASFLAGS -mdspr2"
+
+ AC_COMPILE_IFELSE([AC_LANG_SOURCE([[
+
+ int main ()
+ {
+ int c = 0, a = 0, b = 0;
+ __asm__ __volatile__ (
+ "precr.qb.ph %[c], %[a], %[b] \n\t"
+ : [c] "=r" (c)
+ : [a] "r" (a), [b] "r" (b)
+ );
+ return c;
+ }
+ ]])], have_mips_dspr2=yes)
+ CFLAGS=$ac_save_CFLAGS
+
+ if test "x$have_mips_dspr2" = "xyes" ; then
+ $1
+ else
+ $2
+ fi
+])
git://wimlib.net / wimlib / blobdiff