kc3-lang/libjpeg-turbo/acinclude.m4
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Hash : 4ded4dfa
Author :
Date : 2017-09-01T09:01:00
Build: Fix AltiVec detection on OS X Leopard The ability to directly access elements of an AltiVec vector is apparently a more recent thing.
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acinclude.m4
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# AC_PROG_NASM # -------------------------- # Check that NASM exists and determine flags AC_DEFUN([AC_PROG_NASM],[ AC_ARG_VAR(NASM, [NASM command (used to build the x86/x86-64 SIMD code)]) if test "x$NASM" = "x"; then AC_CHECK_PROGS(NASM, [nasm nasmw yasm]) test -z "$NASM" && AC_MSG_ERROR([no nasm (Netwide Assembler) found]) fi 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 $2 fi ]) # AC_CHECK_COMPATIBLE_MIPSEL_ASSEMBLER_IFELSE # -------------------------- # Test whether the assembler is suitable and supports MIPS instructions AC_DEFUN([AC_CHECK_COMPATIBLE_MIPS_ASSEMBLER_IFELSE],[ have_mips_dspr2=no ac_save_CFLAGS="$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 $2 fi ]) AC_DEFUN([AC_CHECK_COMPATIBLE_ARM64_ASSEMBLER_IFELSE],[ ac_good_gnu_arm_assembler=no ac_save_CC="$CC" ac_save_CFLAGS="$CFLAGS" CFLAGS="$CCASFLAGS -x assembler-with-cpp" CC="$CCAS" AC_COMPILE_IFELSE([AC_LANG_SOURCE([[ .text MYVAR .req x0 movi v0.16b, #100 mov MYVAR, #100 .unreq MYVAR]])], ac_good_gnu_arm_assembler=yes) ac_use_gas_preprocessor=no if test "x$ac_good_gnu_arm_assembler" = "xno" ; then CC="gas-preprocessor.pl $CCAS" AC_COMPILE_IFELSE([AC_LANG_SOURCE([[ .text MYVAR .req x0 movi v0.16b, #100 mov MYVAR, #100 .unreq MYVAR]])], ac_use_gas_preprocessor=yes) fi CFLAGS="$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 $2 fi ]) # AC_CHECK_ALTIVEC # ---------------- # Test whether AltiVec intrinsics are supported AC_DEFUN([AC_CHECK_ALTIVEC],[ ac_save_CFLAGS="$CFLAGS" CFLAGS="$CFLAGS -maltivec" AC_COMPILE_IFELSE([AC_LANG_SOURCE([[ #include <altivec.h> int main(void) { __vector int vi = { 0, 0, 0, 0 }; int i[4]; vec_st(vi, 0, i); return i[0]; }]])], ac_has_altivec=yes) CFLAGS="$ac_save_CFLAGS" if test "x$ac_has_altivec" = "xyes" ; then $1 else $2 fi ]) AC_DEFUN([AC_NO_SIMD],[ AC_MSG_RESULT([no ("$1")]) with_simd=no; if test "x${require_simd}" = "xyes"; then AC_MSG_ERROR([SIMD support not available for this CPU.]) else AC_MSG_WARN([SIMD support not available for this CPU. Performance will\ suffer.]) fi ])