124 lines
2.9 KiB
Plaintext
124 lines
2.9 KiB
Plaintext
dnl From FIND_MOTIF and ACX_PTHREAD, without much understanding
|
|
dnl
|
|
dnl FIND_JPEG[ACTION-IF-FOUND[, ACTION-IF-NOT-FOUND]]
|
|
dnl ------------------------------------------------
|
|
dnl
|
|
dnl Find JPEG libraries and headers
|
|
dnl
|
|
dnl Put compile stuff in JPEG_INCLUDES
|
|
dnl Put link stuff in JPEG_LIBS
|
|
dnl Define HAVE_JPEG if found
|
|
dnl
|
|
AC_DEFUN([FIND_JPEG], [
|
|
AC_REQUIRE([AC_PATH_XTRA])
|
|
|
|
JPEG_INCLUDES=""
|
|
JPEG_LIBS=""
|
|
|
|
AC_ARG_WITH(jpeg,
|
|
AS_HELP_STRING([--without-jpeg], [build without libjpeg (default: test)]))
|
|
# Treat --without-jpeg like --without-jpeg-includes --without-jpeg-libraries.
|
|
if test "$with_jpeg" = "no"; then
|
|
JPEG_INCLUDES=no
|
|
JPEG_LIBS=no
|
|
fi
|
|
|
|
AC_ARG_WITH(jpeg-includes,
|
|
AS_HELP_STRING([--with-jpeg-includes=DIR], [libjpeg includes are in DIR]),
|
|
JPEG_INCLUDES="-I$withval")
|
|
AC_ARG_WITH(jpeg-libraries,
|
|
AS_HELP_STRING([--with-jpeg-libraries=DIR], [libjpeg libraries are in DIR]),
|
|
JPEG_LIBS="-L$withval -ljpeg")
|
|
|
|
AC_MSG_CHECKING(for JPEG)
|
|
|
|
# Look for jpeglib.h
|
|
if test "$JPEG_INCLUDES" = ""; then
|
|
# Check the standard search path
|
|
AC_TRY_COMPILE([#include <stdio.h>
|
|
#include <jpeglib.h>],[int a;],[
|
|
JPEG_INCLUDES=""
|
|
], [
|
|
# jpeglib.h is not in the standard search path, try
|
|
# $prefix
|
|
jpeg_save_INCLUDES="$INCLUDES"
|
|
|
|
INCLUDES="-I${prefix}/include $INCLUDES"
|
|
|
|
AC_TRY_COMPILE([#include <stdio.h>
|
|
#include <jpeglib.h>],[int a;],[
|
|
JPEG_INCLUDES="-I${prefix}/include"
|
|
], [
|
|
JPEG_INCLUDES="no"
|
|
])
|
|
|
|
INCLUDES=$jpeg_save_INCLUDES
|
|
])
|
|
fi
|
|
|
|
# Now for the libraries
|
|
if test "$JPEG_LIBS" = ""; then
|
|
jpeg_save_LIBS="$LIBS"
|
|
jpeg_save_INCLUDES="$INCLUDES"
|
|
|
|
LIBS="-ljpeg $LIBS"
|
|
INCLUDES="$JPEG_INCLUDES $INCLUDES"
|
|
|
|
# Try the standard search path first
|
|
AC_TRY_LINK([#include <stdio.h>
|
|
#include <jpeglib.h>
|
|
],[jpeg_abort((void*)0)], [
|
|
JPEG_LIBS="-ljpeg"
|
|
], [
|
|
# libjpeg is not in the standard search path, try $prefix
|
|
|
|
LIBS="-L${prefix}/lib $LIBS"
|
|
|
|
AC_TRY_LINK([#include <stdio.h>
|
|
#include <jpeg.h>
|
|
],[jpeg_abort((void*)0)], [
|
|
JPEG_LIBS="-L${prefix}/lib -ljpeg"
|
|
], [
|
|
JPEG_LIBS=no
|
|
])
|
|
])
|
|
|
|
LIBS="$jpeg_save_LIBS"
|
|
INCLUDES="$jpeg_save_INCLUDES"
|
|
fi
|
|
|
|
AC_SUBST(JPEG_LIBS)
|
|
AC_SUBST(JPEG_INCLUDES)
|
|
|
|
# Print a helpful message
|
|
jpeg_libraries_result="$JPEG_LIBS"
|
|
jpeg_includes_result="$JPEG_INCLUDES"
|
|
|
|
if test x"$jpeg_libraries_result" = x""; then
|
|
jpeg_libraries_result="in default path"
|
|
fi
|
|
if test x"$jpeg_includes_result" = x""; then
|
|
jpeg_includes_result="in default path"
|
|
fi
|
|
|
|
if test "$jpeg_libraries_result" = "no"; then
|
|
jpeg_libraries_result="(none)"
|
|
fi
|
|
if test "$jpeg_includes_result" = "no"; then
|
|
jpeg_includes_result="(none)"
|
|
fi
|
|
|
|
AC_MSG_RESULT([libraries $jpeg_libraries_result, headers $jpeg_includes_result])
|
|
|
|
# Finally, execute ACTION-IF-FOUND/ACTION-IF-NOT-FOUND:
|
|
if test "$JPEG_INCLUDES" != "no" && test "$JPEG_LIBS" != "no"; then
|
|
AC_DEFINE(HAVE_JPEG,1,[Define if you have jpeg libraries and header files.])
|
|
$1
|
|
else
|
|
JPEG_INCLUDES=""
|
|
JPEG_LIBS=""
|
|
$2
|
|
fi
|
|
|
|
])dnl
|