Imported Upstream version 1.5.3

[platform/upstream/libjpeg-turbo.git] / acinclude.m4

diff --git a/acinclude.m4 b/acinclude.m4
index 70e2555..113169f 100644 (file)
--- a/acinclude.m4
+++ b/acinclude.m4
@@ -3,8 +3,11 @@
 # Check that NASM exists and determine flags
 AC_DEFUN([AC_PROG_NASM],[
 
-AC_CHECK_PROGS(NASM, [nasm nasmw yasm])
-test -z "$NASM" && AC_MSG_ERROR([no nasm (Netwide Assembler) found])
+AC_ARG_VAR(NASM, [NASM command (used to build the x86/x86-64 SIMD code)])
+if test "x$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 "$host_os" in
@@ -40,7 +43,7 @@ case "$host_os" in
         ;;
     esac
   ;;
-  freebsd* | netbsd* | openbsd*)
+  kfreebsd* | freebsd* | netbsd* | openbsd*)
     if echo __ELF__ | $CC -E - | grep __ELF__ > /dev/null; then
       objfmt='BSD-a.out'
     else
@@ -144,26 +147,95 @@ AC_DEFUN([AC_CHECK_COMPATIBLE_ARM_ASSEMBLER_IFELSE],[
   ac_save_CFLAGS="$CFLAGS"
   CFLAGS="$CCASFLAGS -x assembler-with-cpp"
   CC="$CCAS"
-  AC_COMPILE_IFELSE([[
+  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)
+    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 $CCAS"
-    AC_COMPILE_IFELSE([[
+    AC_COMPILE_IFELSE([AC_LANG_SOURCE([[
       .text
       .fpu neon
       .arch armv7a
       .object_arch armv4
       .arm
       pld [r0]
-      vmovn.u16 d0, q0]], ac_use_gas_preprocessor=yes)
+      vmovn.u16 d0, q0]])], ac_use_gas_preprocessor=yes)
+  fi
+  CFLAGS="$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"
@@ -180,3 +252,36 @@ AC_DEFUN([AC_CHECK_COMPATIBLE_ARM_ASSEMBLER_IFELSE],[
     $2
   fi
 ])
+
+# AC_CHECK_ALTIVEC
+# ----------------
+# Test whether AltiVec intrinsics are supported
+AC_DEFUN([AC_CHECK_ALTIVEC],[
+  ac_save_CFLAGS="$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
+])