ref: a065bcb4b13998d875073212087b2a84aa132cc7
dir: /configure.ac/
# Process this file with autoconf to produce a configure script. AC_INIT([jbig2dec], [0.8pre], [[email protected]]) AC_PREREQ(2.53) AC_CONFIG_SRCDIR([jbig2dec.c]) AM_INIT_AUTOMAKE([-Wall]) AM_CONFIG_HEADER(config.h) dnl AC_REVISION([$Rev$]) # Checks for programs. AC_PROG_CC AC_PROG_RANLIB # Checks for libraries. dnl by default we want png support if possible AC_ARG_WITH([libpng], AC_HELP_STRING([--with-libpng[=prefix]], [include support for png output (if libpng is available)]), [ac_cv_want_libpng="$withval"], [ac_cv_want_libpng="yes"]) save_cflags="$CFLAGS" save_ldflags="$LDFLAGS" have_libpng="no" if test "x$ac_cv_want_libpng" != "xno"; then if test "x$ac_cv_want_libpng" != "xyes"; then dnl if it's not yes or no, treat as a prefix CFLAGS="$CFLAGS -I$ac_cv_want_libpng/include" LDFLAGS="$LDFLAGS -L$ac_cv_want_libpng/lib" fi dnl libpng requires pow() which may be in libm AC_SEARCH_LIBS([pow], [m]) AC_CHECK_LIB([png], [png_check_sig], [ AC_CHECK_LIB([z], [deflate], [ AC_DEFINE(HAVE_LIBPNG, 1, [Define if libpng is available (-lpng)]) LIBS="-lpng -lz $LIBS" AC_LIBOBJ([jbig2_image_png]) have_libpng="yes" ]) ]) fi dnl restore (possibly changed) flags if we didn't find working libpng if test "x$have_libpng" != "xyes"; then CFLAGS="$save_cflags" LDFLAGS="$save_ldflags" fi # Checks for header files. AC_HEADER_STDC AC_CHECK_HEADERS([libintl.h stddef.h unistd.h strings.h]) dnl We assume the fixed-size types from stdint.h. If that header is dnl not available, look for the same types in a few other headers. dnl We also attempt to define them ourselves, but only use those if dnl the native versions aren't available. The substitutions happen dnl in a file config_types.h, whose template is created by autogen.sh stdint_types_in="no_replacement_found" stdint_types_discovered="yes" AC_CHECK_SIZEOF(char) AC_CHECK_SIZEOF(short) AC_CHECK_SIZEOF(int) AC_CHECK_SIZEOF(long) case 1 in $ac_cv_sizeof_char) int8_type="char";; *) stdint_types_discovered="no" esac case 2 in $ac_cv_sizeof_short) int16_type="short";; $ac_cv_sizeof_char) int16_type="char";; $ac_cv_sizeof_int) int16_type="char";; *) stdint_types_discovered="no";; esac case 4 in $ac_cv_sizeof_int) int32_type="int";; $ac_cv_sizeof_long) int32_type="long";; $ac_cv_sizeof_short) int32_type="short";; *) stdint_types_discovered="no";; esac AC_CHECK_HEADER([stdint.h]) if test "x$ac_cv_header_stdint_h" != "xyes"; then for include in sys/types.h inttypes.h sys/inttypes.h sys/int_types.h ; do AC_MSG_CHECKING([for uint32_t in $include]) AC_TRY_COMPILE([#include <$include>], [uint32_t canary;], [ AC_MSG_RESULT([yes]) stdint_types_in="$include" break; ], AC_MSG_RESULT([no]) ) done if test "x$stdint_types_in" != "xno_replacement_found"; then AC_MSG_RESULT([Adding $stdint_types_in to config header for stdint types]) AC_DEFINE([JBIG2_REPLACE_STDINT_H],, [set by configure if an alternate header with the stdint.h types is found]) elif test "x$stdint_types_discovered" = "xno"; then AC_MSG_ERROR([ Unable to find suitable definitions of the stdint.h types (uint32_t and friends) You will have to define these yourself in a separate header. See config_win32.h for an example. ]) fi fi AC_SUBST(JBIG2_INT32_T, [$int32_type]) AC_SUBST(JBIG2_INT16_T, [$int16_type]) AC_SUBST(JBIG2_INT8_T, [$int8_type]) AC_SUBST(JBIG2_STDINT_H, [$stdint_types_in]) # Checks for typedefs, structures, and compiler characteristics. AC_C_CONST AC_TYPE_SIZE_T AC_C_BIGENDIAN # Checks for library functions. AC_FUNC_MEMCMP dnl we use realloc() but don't depend on the zero-length behavior dnl tested by AC_FUNC_REALLOC AC_REPLACE_FUNCS([snprintf]) AC_CHECK_FUNCS([memset strdup]) dnl use our included getopt if the system doesn't have getopt_long() AC_CHECK_FUNC(getopt_long, AC_DEFINE(HAVE_GETOPT_LONG,, [Define if the local libc includes getopt_long()] ),[ AC_LIBOBJ([getopt]) AC_LIBOBJ([getopt1]) ]) # generate output AC_CONFIG_FILES([Makefile config_types.h]) AC_OUTPUT