1 # AC_PROG_NASM 2 # -------------------------- 3 # Check that NASM exists and determine flags 4 AC_DEFUN([AC_PROG_NASM],[ 5 6 AC_ARG_VAR(NASM, [NASM command (used to build the x86/x86-64 SIMD code)]) 7 if test "x$NASM" = "x"; then 8 AC_CHECK_PROGS(NASM, [nasm nasmw yasm]) 9 test -z "$NASM" && AC_MSG_ERROR([no nasm (Netwide Assembler) found]) 10 fi 11 12 AC_MSG_CHECKING([for object file format of host system]) 13 case "$host_os" in 14 cygwin* | mingw* | pw32* | interix*) 15 case "$host_cpu" in 16 x86_64) 17 objfmt='Win64-COFF' 18 ;; 19 *) 20 objfmt='Win32-COFF' 21 ;; 22 esac 23 ;; 24 msdosdjgpp* | go32*) 25 objfmt='COFF' 26 ;; 27 os2-emx*) # not tested 28 objfmt='MSOMF' # obj 29 ;; 30 linux*coff* | linux*oldld*) 31 objfmt='COFF' # ??? 32 ;; 33 linux*aout*) 34 objfmt='a.out' 35 ;; 36 linux*) 37 case "$host_cpu" in 38 x86_64) 39 objfmt='ELF64' 40 ;; 41 *) 42 objfmt='ELF' 43 ;; 44 esac 45 ;; 46 kfreebsd* | freebsd* | netbsd* | openbsd*) 47 if echo __ELF__ | $CC -E - | grep __ELF__ > /dev/null; then 48 objfmt='BSD-a.out' 49 else 50 case "$host_cpu" in 51 x86_64 | amd64) 52 objfmt='ELF64' 53 ;; 54 *) 55 objfmt='ELF' 56 ;; 57 esac 58 fi 59 ;; 60 solaris* | sunos* | sysv* | sco*) 61 case "$host_cpu" in 62 x86_64) 63 objfmt='ELF64' 64 ;; 65 *) 66 objfmt='ELF' 67 ;; 68 esac 69 ;; 70 darwin* | rhapsody* | nextstep* | openstep* | macos*) 71 case "$host_cpu" in 72 x86_64) 73 objfmt='Mach-O64' 74 ;; 75 *) 76 objfmt='Mach-O' 77 ;; 78 esac 79 ;; 80 *) 81 objfmt='ELF ?' 82 ;; 83 esac 84 85 AC_MSG_RESULT([$objfmt]) 86 if test "$objfmt" = 'ELF ?'; then 87 objfmt='ELF' 88 AC_MSG_WARN([unexpected host system. assumed that the format is $objfmt.]) 89 fi 90 91 AC_MSG_CHECKING([for object file format specifier (NAFLAGS) ]) 92 case "$objfmt" in 93 MSOMF) NAFLAGS='-fobj -DOBJ32';; 94 Win32-COFF) NAFLAGS='-fwin32 -DWIN32';; 95 Win64-COFF) NAFLAGS='-fwin64 -DWIN64 -D__x86_64__';; 96 COFF) NAFLAGS='-fcoff -DCOFF';; 97 a.out) NAFLAGS='-faout -DAOUT';; 98 BSD-a.out) NAFLAGS='-faoutb -DAOUT';; 99 ELF) NAFLAGS='-felf -DELF';; 100 ELF64) NAFLAGS='-felf64 -DELF -D__x86_64__';; 101 RDF) NAFLAGS='-frdf -DRDF';; 102 Mach-O) NAFLAGS='-fmacho -DMACHO';; 103 Mach-O64) NAFLAGS='-fmacho64 -DMACHO -D__x86_64__';; 104 esac 105 AC_MSG_RESULT([$NAFLAGS]) 106 AC_SUBST([NAFLAGS]) 107 108 AC_MSG_CHECKING([whether the assembler ($NASM $NAFLAGS) works]) 109 cat > conftest.asm <<EOF 110 [%line __oline__ "configure" 111 section .text 112 global _main,main 113 _main: 114 main: xor eax,eax 115 ret 116 ]EOF 117 try_nasm='$NASM $NAFLAGS -o conftest.o conftest.asm' 118 if AC_TRY_EVAL(try_nasm) && test -s conftest.o; then 119 AC_MSG_RESULT(yes) 120 else 121 echo "configure: failed program was:" >&AC_FD_CC 122 cat conftest.asm >&AC_FD_CC 123 rm -rf conftest* 124 AC_MSG_RESULT(no) 125 AC_MSG_ERROR([installation or configuration problem: assembler cannot create object files.]) 126 fi 127 128 AC_MSG_CHECKING([whether the linker accepts assembler output]) 129 try_nasm='${CC-cc} -o conftest${ac_exeext} $LDFLAGS conftest.o $LIBS 1>&AC_FD_CC' 130 if AC_TRY_EVAL(try_nasm) && test -s conftest${ac_exeext}; then 131 rm -rf conftest* 132 AC_MSG_RESULT(yes) 133 else 134 rm -rf conftest* 135 AC_MSG_RESULT(no) 136 AC_MSG_ERROR([configuration problem: maybe object file format mismatch.]) 137 fi 138 139 ]) 140 141 # AC_CHECK_COMPATIBLE_ARM_ASSEMBLER_IFELSE 142 # -------------------------- 143 # Test whether the assembler is suitable and supports NEON instructions 144 AC_DEFUN([AC_CHECK_COMPATIBLE_ARM_ASSEMBLER_IFELSE],[ 145 ac_good_gnu_arm_assembler=no 146 ac_save_CC="$CC" 147 ac_save_CFLAGS="$CFLAGS" 148 CFLAGS="$CCASFLAGS -x assembler-with-cpp" 149 CC="$CCAS" 150 AC_COMPILE_IFELSE([AC_LANG_SOURCE([[ 151 .text 152 .fpu neon 153 .arch armv7a 154 .object_arch armv4 155 .arm 156 pld [r0] 157 vmovn.u16 d0, q0]])], ac_good_gnu_arm_assembler=yes) 158 159 ac_use_gas_preprocessor=no 160 if test "x$ac_good_gnu_arm_assembler" = "xno" ; then 161 CC="gas-preprocessor.pl $CCAS" 162 AC_COMPILE_IFELSE([AC_LANG_SOURCE([[ 163 .text 164 .fpu neon 165 .arch armv7a 166 .object_arch armv4 167 .arm 168 pld [r0] 169 vmovn.u16 d0, q0]])], ac_use_gas_preprocessor=yes) 170 fi 171 CFLAGS="$ac_save_CFLAGS" 172 CC="$ac_save_CC" 173 174 if test "x$ac_use_gas_preprocessor" = "xyes" ; then 175 CCAS="gas-preprocessor.pl $CCAS" 176 AC_SUBST([CCAS]) 177 ac_good_gnu_arm_assembler=yes 178 fi 179 180 if test "x$ac_good_gnu_arm_assembler" = "xyes" ; then 181 $1 182 else 183 $2 184 fi 185 ]) 186 187 # AC_CHECK_COMPATIBLE_MIPSEL_ASSEMBLER_IFELSE 188 # -------------------------- 189 # Test whether the assembler is suitable and supports MIPS instructions 190 AC_DEFUN([AC_CHECK_COMPATIBLE_MIPS_ASSEMBLER_IFELSE],[ 191 have_mips_dspr2=no 192 ac_save_CFLAGS="$CFLAGS" 193 CFLAGS="$CCASFLAGS -mdspr2" 194 195 AC_COMPILE_IFELSE([AC_LANG_SOURCE([[ 196 197 int main () 198 { 199 int c = 0, a = 0, b = 0; 200 __asm__ __volatile__ ( 201 "precr.qb.ph %[c], %[a], %[b] \n\t" 202 : [c] "=r" (c) 203 : [a] "r" (a), [b] "r" (b) 204 ); 205 return c; 206 } 207 ]])], have_mips_dspr2=yes) 208 CFLAGS=$ac_save_CFLAGS 209 210 if test "x$have_mips_dspr2" = "xyes" ; then 211 $1 212 else 213 $2 214 fi 215 ]) 216 217 AC_DEFUN([AC_CHECK_COMPATIBLE_ARM64_ASSEMBLER_IFELSE],[ 218 ac_good_gnu_arm_assembler=no 219 ac_save_CC="$CC" 220 ac_save_CFLAGS="$CFLAGS" 221 CFLAGS="$CCASFLAGS -x assembler-with-cpp" 222 CC="$CCAS" 223 AC_COMPILE_IFELSE([AC_LANG_SOURCE([[ 224 .text 225 MYVAR .req x0 226 movi v0.16b, #100 227 mov MYVAR, #100 228 .unreq MYVAR]])], ac_good_gnu_arm_assembler=yes) 229 230 ac_use_gas_preprocessor=no 231 if test "x$ac_good_gnu_arm_assembler" = "xno" ; then 232 CC="gas-preprocessor.pl $CCAS" 233 AC_COMPILE_IFELSE([AC_LANG_SOURCE([[ 234 .text 235 MYVAR .req x0 236 movi v0.16b, #100 237 mov MYVAR, #100 238 .unreq MYVAR]])], ac_use_gas_preprocessor=yes) 239 fi 240 CFLAGS="$ac_save_CFLAGS" 241 CC="$ac_save_CC" 242 243 if test "x$ac_use_gas_preprocessor" = "xyes" ; then 244 CCAS="gas-preprocessor.pl $CCAS" 245 AC_SUBST([CCAS]) 246 ac_good_gnu_arm_assembler=yes 247 fi 248 249 if test "x$ac_good_gnu_arm_assembler" = "xyes" ; then 250 $1 251 else 252 $2 253 fi 254 ]) 255
