Formatting tweaks


git-svn-id: svn+ssh://svn.code.sf.net/p/libjpeg-turbo/code/trunk@943 632fc199-4ca6-4c93-a231-07263d6284db
diff --git a/configure.ac b/configure.ac
index 5fbf136..9404cac 100644
--- a/configure.ac
+++ b/configure.ac
@@ -24,9 +24,10 @@
 # Check whether compiler supports pointers to undefined structures
 AC_MSG_CHECKING(whether compiler supports pointers to undefined structures)
 AC_TRY_COMPILE([ typedef struct undefined_structure * undef_struct_ptr; ], ,
-AC_MSG_RESULT(yes),
-[AC_MSG_RESULT(no)
-AC_DEFINE([INCOMPLETE_TYPES_BROKEN],[1],[Compiler does not support pointers to undefined structures.])])
+  AC_MSG_RESULT(yes),
+  [AC_MSG_RESULT(no)
+   AC_DEFINE([INCOMPLETE_TYPES_BROKEN], [1],
+     [Compiler does not support pointers to undefined structures.])])
 
 if test "x${GCC}" = "xyes"; then
   if test "x${SAVED_CFLAGS}" = "x"; then
@@ -49,7 +50,8 @@
 # Checks for header files.
 AC_HEADER_STDC
 AC_CHECK_HEADERS([stddef.h stdlib.h string.h])
-AC_CHECK_HEADER([sys/types.h], AC_DEFINE([NEED_SYS_TYPES_H], 1, [Define if you have sys/types.h]))
+AC_CHECK_HEADER([sys/types.h],
+  AC_DEFINE([NEED_SYS_TYPES_H], 1, [Define if you have sys/types.h]))
 
 # Checks for typedefs, structures, and compiler characteristics.
 AC_C_CONST
@@ -60,80 +62,86 @@
 
 AC_MSG_CHECKING([if right shift is signed])
 AC_TRY_RUN(
-	[#include <stdio.h>
-	 int is_shifting_signed (long arg) {
-	 long res = arg >> 4;
+  [#include <stdio.h>
+   int is_shifting_signed (long arg) {
+     long res = arg >> 4;
 
-	 if (res == -0x7F7E80CL)
-		return 1; /* right shift is signed */
+     if (res == -0x7F7E80CL)
+       return 1; /* right shift is signed */
 
-	 /* see if unsigned-shift hack will fix it. */
-	 /* we can't just test exact value since it depends on width of long... */
-	 res |= (~0L) << (32-4);
-	 if (res == -0x7F7E80CL)
-		return 0; /* right shift is unsigned */
+     /* see if unsigned-shift hack will fix it. */
+     /* we can't just test exact value since it depends on width of long... */
+     res |= (~0L) << (32-4);
+     if (res == -0x7F7E80CL)
+       return 0; /* right shift is unsigned */
 
-	 printf("Right shift isn't acting as I expect it to.\n");
-	 printf("I fear the JPEG software will not work at all.\n\n");
-	 return 0; /* try it with unsigned anyway */
-	 }
-	 int main (void) {
-		exit(is_shifting_signed(-0x7F7E80B1L));
-	 }],
-	[AC_MSG_RESULT(no)
-	 AC_DEFINE([RIGHT_SHIFT_IS_UNSIGNED], 1, [Define if shift is unsigned])],
-	[AC_MSG_RESULT(yes)],
-	[AC_MSG_RESULT(Assuming that right shift is signed on target machine.)])
+     printf("Right shift isn't acting as I expect it to.\n");
+     printf("I fear the JPEG software will not work at all.\n\n");
+     return 0; /* try it with unsigned anyway */
+   }
+   int main (void) {
+     exit(is_shifting_signed(-0x7F7E80B1L));
+   }],
+  [AC_MSG_RESULT(no)
+   AC_DEFINE([RIGHT_SHIFT_IS_UNSIGNED], 1, [Define if shift is unsigned])],
+  [AC_MSG_RESULT(yes)],
+  [AC_MSG_RESULT(Assuming that right shift is signed on target machine.)])
 
 # test whether global names are unique to at least 15 chars
 AC_MSG_CHECKING([for short external names])
 AC_TRY_LINK(
-	[int possibly_duplicate_function () { return 0; }
-	 int possibly_dupli_function () { return 1; }], [ ],
-	[AC_MSG_RESULT(ok)],
-	[AC_MSG_RESULT(short)
-	 AC_DEFINE([NEED_SHORT_EXTERNAL_NAMES], 1, [Define if you need short function names])])
+  [int possibly_duplicate_function () { return 0; }
+   int possibly_dupli_function () { return 1; }], [ ],
+  [AC_MSG_RESULT(ok)],
+  [AC_MSG_RESULT(short)
+   AC_DEFINE([NEED_SHORT_EXTERNAL_NAMES], 1,
+     [Define if you need short function names])])
 
 # Checks for library functions.
 AC_CHECK_FUNCS([memset memcpy], [],
-	[AC_DEFINE([NEED_BSD_STRINGS], 1,
-		   [Define if you have BSD-like bzero and bcopy])])
+  [AC_DEFINE([NEED_BSD_STRINGS], 1,
+     [Define if you have BSD-like bzero and bcopy])])
 
 AC_MSG_CHECKING([libjpeg API version])
 AC_ARG_VAR(JPEG_LIB_VERSION, [libjpeg API version (62, 70, or 80)])
 if test "x$JPEG_LIB_VERSION" = "x"; then
-    AC_ARG_WITH([jpeg7],
-        AC_HELP_STRING([--with-jpeg7], [Emulate libjpeg v7 API/ABI (this makes libjpeg-turbo backward incompatible with libjpeg v6b.)]))
-    AC_ARG_WITH([jpeg8],
-        AC_HELP_STRING([--with-jpeg8], [Emulate libjpeg v8 API/ABI (this makes libjpeg-turbo backward incompatible with libjpeg v6b.)]))
-    if test "x${with_jpeg8}" = "xyes"; then
-        JPEG_LIB_VERSION=80
+  AC_ARG_WITH([jpeg7],
+    AC_HELP_STRING([--with-jpeg7],
+      [Emulate libjpeg v7 API/ABI (this makes libjpeg-turbo backward incompatible with libjpeg v6b.)]))
+  AC_ARG_WITH([jpeg8],
+    AC_HELP_STRING([--with-jpeg8],
+      [Emulate libjpeg v8 API/ABI (this makes libjpeg-turbo backward incompatible with libjpeg v6b.)]))
+  if test "x${with_jpeg8}" = "xyes"; then
+    JPEG_LIB_VERSION=80
+  else
+    if test "x${with_jpeg7}" = "xyes"; then
+      JPEG_LIB_VERSION=70
     else
-        if test "x${with_jpeg7}" = "xyes"; then
-            JPEG_LIB_VERSION=70
-        else
-            JPEG_LIB_VERSION=62
-        fi
+      JPEG_LIB_VERSION=62
     fi
+  fi
 fi
 JPEG_LIB_VERSION_DECIMAL=`expr $JPEG_LIB_VERSION / 10`.`expr $JPEG_LIB_VERSION % 10`
 AC_SUBST(JPEG_LIB_VERSION_DECIMAL)
 AC_MSG_RESULT([$JPEG_LIB_VERSION_DECIMAL])
-AC_DEFINE_UNQUOTED(JPEG_LIB_VERSION, [$JPEG_LIB_VERSION], [libjpeg API version])
+AC_DEFINE_UNQUOTED(JPEG_LIB_VERSION, [$JPEG_LIB_VERSION],
+  [libjpeg API version])
 
-AC_ARG_VAR(SO_MAJOR_VERSION, [Major version of the libjpeg-turbo shared library (default is determined by the API version)])
-AC_ARG_VAR(SO_MINOR_VERSION, [Minor version of the libjpeg-turbo shared library (default is determined by the API version)])
+AC_ARG_VAR(SO_MAJOR_VERSION,
+  [Major version of the libjpeg-turbo shared library (default is determined by the API version)])
+AC_ARG_VAR(SO_MINOR_VERSION,
+  [Minor version of the libjpeg-turbo shared library (default is determined by the API version)])
 if test "x$SO_MAJOR_VERSION" = "x"; then
-    case "$JPEG_LIB_VERSION" in
-        62)  SO_MAJOR_VERSION=$JPEG_LIB_VERSION ;;
-        *)   SO_MAJOR_VERSION=`expr $JPEG_LIB_VERSION / 10` ;;
-    esac
+  case "$JPEG_LIB_VERSION" in
+    62)  SO_MAJOR_VERSION=$JPEG_LIB_VERSION ;;
+    *)   SO_MAJOR_VERSION=`expr $JPEG_LIB_VERSION / 10` ;;
+  esac
 fi
 if test "x$SO_MINOR_VERSION" = "x"; then
-    case "$JPEG_LIB_VERSION" in
-        80)  SO_MINOR_VERSION=2 ;;
-        *)   SO_MINOR_VERSION=0 ;;
-    esac
+  case "$JPEG_LIB_VERSION" in
+    80)  SO_MINOR_VERSION=2 ;;
+    *)   SO_MINOR_VERSION=0 ;;
+  esac
 fi
 
 RPM_CONFIG_ARGS=
@@ -144,15 +152,17 @@
 if test "x${with_jpeg8}" != "xyes"; then
   AC_MSG_CHECKING([whether to include in-memory source/destination managers])
   AC_ARG_WITH([mem-srcdst],
-      AC_HELP_STRING([--without-mem-srcdst], [Do not include in-memory source/destination manager functions when emulating the libjpeg v6b or v7 API/ABI]))
+    AC_HELP_STRING([--without-mem-srcdst],
+      [Do not include in-memory source/destination manager functions when emulating the libjpeg v6b or v7 API/ABI]))
   if test "x$with_mem_srcdst" != "xno"; then
-      AC_MSG_RESULT(yes)
-      AC_DEFINE([MEM_SRCDST_SUPPORTED], [1], [Support in-memory source/destination managers])
-      SO_AGE=1
-      MEM_SRCDST_FUNCTIONS="global:  jpeg_mem_dest;  jpeg_mem_src;";
+    AC_MSG_RESULT(yes)
+    AC_DEFINE([MEM_SRCDST_SUPPORTED], [1],
+      [Support in-memory source/destination managers])
+    SO_AGE=1
+    MEM_SRCDST_FUNCTIONS="global:  jpeg_mem_dest;  jpeg_mem_src;";
   else
-      AC_MSG_RESULT(no)
-      RPM_CONFIG_ARGS="$RPM_CONFIG_ARGS --without-mem-srcdst"
+    AC_MSG_RESULT(no)
+    RPM_CONFIG_ARGS="$RPM_CONFIG_ARGS --without-mem-srcdst"
   fi
 fi
 
@@ -171,7 +181,7 @@
 AC_ARG_ENABLE([ld-version-script],
   AS_HELP_STRING([--disable-ld-version-script],
     [Disable linker version script for libjpeg-turbo (default is to use linker version script if the linker supports it)]),
-    [VERSION_SCRIPT=$enableval], [])
+  [VERSION_SCRIPT=$enableval], [])
 
 AC_MSG_CHECKING([whether the linker supports version scripts])
 SAVED_LDFLAGS="$LDFLAGS"
@@ -182,11 +192,15 @@
 };
 EOF
 AC_LINK_IFELSE(AC_LANG_PROGRAM([], []),
-  [VERSION_SCRIPT_FLAG=-Wl,--version-script,; AC_MSG_RESULT([yes (GNU style)])], [])
+  [VERSION_SCRIPT_FLAG=-Wl,--version-script,;
+   AC_MSG_RESULT([yes (GNU style)])],
+  [])
 if test "x$VERSION_SCRIPT_FLAG" = "x"; then
   LDFLAGS="$SAVED_LDFLAGS -Wl,-M,conftest.map"
   AC_LINK_IFELSE(AC_LANG_PROGRAM([], []),
-    [VERSION_SCRIPT_FLAG=-Wl,-M,; AC_MSG_RESULT([yes (Sun style)])], [])
+    [VERSION_SCRIPT_FLAG=-Wl,-M,;
+     AC_MSG_RESULT([yes (Sun style)])],
+    [])
 fi
 if test "x$VERSION_SCRIPT_FLAG" = "x"; then
   VERSION_SCRIPT=no
@@ -217,39 +231,43 @@
 # Arithmetic coding support
 AC_MSG_CHECKING([whether to include arithmetic encoding support])
 AC_ARG_WITH([arith-enc],
-    AC_HELP_STRING([--without-arith-enc], [Do not include arithmetic encoding support]))
+  AC_HELP_STRING([--without-arith-enc],
+    [Do not include arithmetic encoding support]))
 if test "x$with_arith_enc" = "xno"; then
-    AC_MSG_RESULT(no)
-    RPM_CONFIG_ARGS="$RPM_CONFIG_ARGS --without-arith-enc"
+  AC_MSG_RESULT(no)
+  RPM_CONFIG_ARGS="$RPM_CONFIG_ARGS --without-arith-enc"
 else
-    AC_DEFINE([C_ARITH_CODING_SUPPORTED], [1], [Support arithmetic encoding])
-    AC_MSG_RESULT(yes)
+  AC_DEFINE([C_ARITH_CODING_SUPPORTED], [1], [Support arithmetic encoding])
+  AC_MSG_RESULT(yes)
 fi
 AM_CONDITIONAL([WITH_ARITH_ENC], [test "x$with_arith_enc" != "xno"])
 
 AC_MSG_CHECKING([whether to include arithmetic decoding support])
 AC_ARG_WITH([arith-dec],
-    AC_HELP_STRING([--without-arith-dec], [Do not include arithmetic decoding support]))
+  AC_HELP_STRING([--without-arith-dec],
+    [Do not include arithmetic decoding support]))
 if test "x$with_arith_dec" = "xno"; then
-    AC_MSG_RESULT(no)
-    RPM_CONFIG_ARGS="$RPM_CONFIG_ARGS --without-arith-dec"
+  AC_MSG_RESULT(no)
+  RPM_CONFIG_ARGS="$RPM_CONFIG_ARGS --without-arith-dec"
 else
-    AC_DEFINE([D_ARITH_CODING_SUPPORTED], [1], [Support arithmetic decoding])
-    AC_MSG_RESULT(yes)
+  AC_DEFINE([D_ARITH_CODING_SUPPORTED], [1], [Support arithmetic decoding])
+  AC_MSG_RESULT(yes)
 fi
 AM_CONDITIONAL([WITH_ARITH_DEC], [test "x$with_arith_dec" != "xno"])
 
-AM_CONDITIONAL([WITH_ARITH], [test "x$with_arith_dec" != "xno" -o "x$with_arith_enc" != "xno"])
+AM_CONDITIONAL([WITH_ARITH],
+  [test "x$with_arith_dec" != "xno" -o "x$with_arith_enc" != "xno"])
 
 # TurboJPEG support
 AC_MSG_CHECKING([whether to build TurboJPEG C wrapper])
 AC_ARG_WITH([turbojpeg],
-    AC_HELP_STRING([--without-turbojpeg],[Do not include the TurboJPEG wrapper library and associated test programs]))
+  AC_HELP_STRING([--without-turbojpeg],
+    [Do not include the TurboJPEG wrapper library and associated test programs]))
 if test "x$with_turbojpeg" = "xno"; then
-    AC_MSG_RESULT(no)
-    RPM_CONFIG_ARGS="$RPM_CONFIG_ARGS --without-turbojpeg"
+  AC_MSG_RESULT(no)
+  RPM_CONFIG_ARGS="$RPM_CONFIG_ARGS --without-turbojpeg"
 else
-    AC_MSG_RESULT(yes)
+  AC_MSG_RESULT(yes)
 fi
 
 # Java support
@@ -270,47 +288,48 @@
   JAVA=java
 fi
 AC_SUBST(JAVA)
-AC_ARG_VAR(JNI_CFLAGS, [C compiler flags needed to include jni.h (default: -I/System/Library/Frameworks/JavaVM.framework/Headers on OS X, '-I/usr/java/include -I/usr/java/include/solaris' on Solaris, and '-I/usr/java/default/include -I/usr/java/default/include/linux' on Linux)])
+AC_ARG_VAR(JNI_CFLAGS,
+  [C compiler flags needed to include jni.h (default: -I/System/Library/Frameworks/JavaVM.framework/Headers on OS X, '-I/usr/java/include -I/usr/java/include/solaris' on Solaris, and '-I/usr/java/default/include -I/usr/java/default/include/linux' on Linux)])
 
 AC_MSG_CHECKING([whether to build TurboJPEG Java wrapper])
 AC_ARG_WITH([java],
-    AC_HELP_STRING([--with-java],[Build Java wrapper for the TurboJPEG library]))
+  AC_HELP_STRING([--with-java], [Build Java wrapper for the TurboJPEG library]))
 if test "x$with_turbojpeg" = "xno"; then
-    with_java=no
+  with_java=no
 fi
 
 WITH_JAVA=0
 if test "x$with_java" = "xyes"; then
-    AC_MSG_RESULT(yes)
+  AC_MSG_RESULT(yes)
 
-    case $host_os in
-      darwin*)
-        DEFAULT_JNI_CFLAGS=-I/System/Library/Frameworks/JavaVM.framework/Headers
-        ;;
-      solaris*)
-        DEFAULT_JNI_CFLAGS='-I/usr/java/include -I/usr/java/include/solaris'
-        ;;
-      linux*)
-        DEFAULT_JNI_CFLAGS='-I/usr/java/default/include -I/usr/java/default/include/linux'
-        ;;
-    esac
-    if test "x$JNI_CFLAGS" = "x"; then
-        JNI_CFLAGS=$DEFAULT_JNI_CFLAGS
-    fi
+  case $host_os in
+    darwin*)
+      DEFAULT_JNI_CFLAGS=-I/System/Library/Frameworks/JavaVM.framework/Headers
+      ;;
+    solaris*)
+      DEFAULT_JNI_CFLAGS='-I/usr/java/include -I/usr/java/include/solaris'
+      ;;
+    linux*)
+      DEFAULT_JNI_CFLAGS='-I/usr/java/default/include -I/usr/java/default/include/linux'
+      ;;
+  esac
+  if test "x$JNI_CFLAGS" = "x"; then
+    JNI_CFLAGS=$DEFAULT_JNI_CFLAGS
+  fi
 
-    SAVE_CPPFLAGS=${CPPFLAGS}
-    CPPFLAGS="${CPPFLAGS} ${JNI_CFLAGS}"
-    AC_CHECK_HEADERS([jni.h], [DUMMY=1],
-        [AC_MSG_ERROR([Could not find JNI header file])])
-    CPPFLAGS=${SAVE_CPPFLAGS}
-    AC_SUBST(JNI_CFLAGS)
+  SAVE_CPPFLAGS=${CPPFLAGS}
+  CPPFLAGS="${CPPFLAGS} ${JNI_CFLAGS}"
+  AC_CHECK_HEADERS([jni.h], [DUMMY=1],
+    [AC_MSG_ERROR([Could not find JNI header file])])
+  CPPFLAGS=${SAVE_CPPFLAGS}
+  AC_SUBST(JNI_CFLAGS)
 
-    RPM_CONFIG_ARGS="$RPM_CONFIG_ARGS --with-java"
-    JAVA_RPM_CONTENTS_1='%dir /opt/%{name}/classes'
-    JAVA_RPM_CONTENTS_2=/opt/%{name}/classes/turbojpeg.jar
-    WITH_JAVA=1
+  RPM_CONFIG_ARGS="$RPM_CONFIG_ARGS --with-java"
+  JAVA_RPM_CONTENTS_1='%dir /opt/%{name}/classes'
+  JAVA_RPM_CONTENTS_2=/opt/%{name}/classes/turbojpeg.jar
+  WITH_JAVA=1
 else
-    AC_MSG_RESULT(no)
+  AC_MSG_RESULT(no)
 fi
 AM_CONDITIONAL([WITH_JAVA], [test "x$with_java" = "xyes"])
 AC_SUBST(WITH_JAVA)
@@ -319,7 +338,8 @@
 
 # optionally force using gas-preprocessor.pl for compatibility testing
 AC_ARG_WITH([gas-preprocessor],
-    AC_HELP_STRING([--with-gas-preprocessor],[Force using gas-preprocessor.pl on ARM.]))
+  AC_HELP_STRING([--with-gas-preprocessor],
+    [Force using gas-preprocessor.pl on ARM.]))
 if test "x${with_gas_preprocessor}" = "xyes"; then
   case $host_os in
     darwin*)
@@ -334,7 +354,7 @@
 
 # SIMD is optional
 AC_ARG_WITH([simd],
-    AC_HELP_STRING([--without-simd],[Do not include SIMD extensions]))
+  AC_HELP_STRING([--without-simd], [Do not include SIMD extensions]))
 if test "x${with_simd}" != "xno"; then
   # Check if we're on a supported CPU
   AC_MSG_CHECKING([if we have SIMD optimisations for cpu type])
@@ -343,12 +363,12 @@
       AC_MSG_RESULT([yes (x86_64)])
       AC_PROG_NASM
       simd_arch=x86_64
-    ;;
+      ;;
     i*86 | x86 | ia32)
       AC_MSG_RESULT([yes (i386)])
       AC_PROG_NASM
       simd_arch=i386
-    ;;
+      ;;
     arm*)
       AC_MSG_RESULT([yes (arm)])
       AC_MSG_CHECKING([if the assembler is GNU-compatible and can be used])
@@ -358,12 +378,12 @@
         [AC_MSG_RESULT([no])
          with_simd=no
          AC_MSG_WARN([SIMD support can't be enabled.  Performance will suffer.])])
-    ;;
+      ;;
     *)
       AC_MSG_RESULT([no ("$host_cpu")])
       AC_MSG_WARN([SIMD support not available for this CPU.  Performance will suffer.])
       with_simd=no;
-    ;;
+      ;;
   esac
 
   if test "x${with_simd}" != "xno"; then
@@ -412,11 +432,11 @@
 AC_CONFIG_FILES([pkgscripts/Info.plist:release/Info.plist.in])
 AC_CONFIG_FILES([pkgscripts/uninstall:release/uninstall.in])
 if test "x$with_turbojpeg" != "xno"; then
-AC_CONFIG_FILES([tjbenchtest])
+  AC_CONFIG_FILES([tjbenchtest])
 fi
 if test "x$with_java" = "xyes"; then
-AC_CONFIG_FILES([tjbenchtest.java])
-AC_CONFIG_FILES([tjexampletest])
+  AC_CONFIG_FILES([tjbenchtest.java])
+  AC_CONFIG_FILES([tjexampletest])
 fi
 AC_CONFIG_FILES([libjpeg.map])
 AC_CONFIG_FILES([Makefile simd/Makefile])