mirror of
https://github.com/tesseract-ocr/tesseract.git
synced 2024-12-05 10:49:01 +08:00
d6c1fa766c
AX_CHECK_COMPILE_FLAG fails if it is used with -Werror and the compiler
raises error -Wextra-semi-stmt:
configure:4224: checking whether C++ compiler accepts -mavx
configure:4243: clang++-8 -c -g -O2 -Wall -Wextra -Wpedantic -Weverything -Wno-c++98-compat -Wno-c++98-compat-pedantic -march=native -Werror -Wno-unused-macros -mavx conftest.cpp >&5
conftest.cpp:20:3: error: empty expression statement has no effect; remove unnecessary ';' to silence this warning [-Werror,-Wextra-semi-stmt]
;
^
1 error generated.
Add -Wno-extra-semi-stmt to disable those errors if possible.
Signed-off-by: Stefan Weil <sw@weilnetz.de>
562 lines
17 KiB
Plaintext
562 lines
17 KiB
Plaintext
# -*-Shell-script-*-
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#
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# Copyright (c) Luc Vincent
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# ----------------------------------------
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# Initialization
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# ----------------------------------------
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AC_PREREQ([2.63])
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AC_INIT([tesseract],
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[m4_esyscmd_s([test -d .git && git describe --abbrev=4 || cat VERSION])],
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[https://github.com/tesseract-ocr/tesseract/issues],,
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[https://github.com/tesseract-ocr/tesseract/])
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AC_PROG_CXX([g++ clang++])
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AC_LANG([C++])
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AC_LANG_COMPILER_REQUIRE
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CXXFLAGS=${CXXFLAGS:-""}
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AC_CONFIG_MACRO_DIR([m4])
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AC_CONFIG_AUX_DIR([config])
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AC_CONFIG_SRCDIR([src/api/tesseractmain.cpp])
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AC_PREFIX_DEFAULT([/usr/local])
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# Automake configuration. Do not require README file (we use README.md).
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AM_INIT_AUTOMAKE([foreign subdir-objects])
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# Define date of package, etc. Could be useful in auto-generated
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# documentation.
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PACKAGE_YEAR=2018
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PACKAGE_DATE="10/29"
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abs_top_srcdir=`AS_DIRNAME([$0])`
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AC_DEFINE_UNQUOTED([PACKAGE_NAME], ["${PACKAGE_NAME}"], [Name of package])
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AC_DEFINE_UNQUOTED([PACKAGE_VERSION], ["${PACKAGE_VERSION}"], [Version number])
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AC_DEFINE_UNQUOTED([PACKAGE_YEAR], ["$PACKAGE_YEAR"], [Official year for this release])
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AC_DEFINE_UNQUOTED([PACKAGE_DATE], ["$PACKAGE_DATE"], [Official date of release])
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AC_SUBST([PACKAGE_NAME])
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AC_SUBST([PACKAGE_VERSION])
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AC_SUBST([PACKAGE_YEAR])
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AC_SUBST([PACKAGE_DATE])
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GENERIC_LIBRARY_NAME=tesseract
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# Release versioning. Get versions from PACKAGE_VERSION.
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AX_SPLIT_VERSION
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GENERIC_MAJOR_VERSION=$(echo "$AX_MAJOR_VERSION" | $SED 's/^[[^0-9]]*//')
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GENERIC_MINOR_VERSION=$AX_MINOR_VERSION
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GENERIC_MICRO_VERSION=`echo "$AX_POINT_VERSION" | $SED 's/^\([[0-9]][[0-9]]*\).*/\1/'`
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# API version (often = GENERIC_MAJOR_VERSION.GENERIC_MINOR_VERSION)
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GENERIC_API_VERSION=$GENERIC_MAJOR_VERSION.$GENERIC_MINOR_VERSION
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GENERIC_LIBRARY_VERSION=$GENERIC_MAJOR_VERSION:$GENERIC_MINOR_VERSION
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AC_SUBST([GENERIC_API_VERSION])
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AC_SUBST([GENERIC_MAJOR_VERSION])
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AC_SUBST([GENERIC_MINOR_VERSION])
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AC_SUBST([GENERIC_MICRO_VERSION])
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AC_SUBST([GENERIC_LIBRARY_VERSION])
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PACKAGE=$GENERIC_LIBRARY_NAME
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AC_SUBST([GENERIC_LIBRARY_NAME])
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GENERIC_VERSION=$GENERIC_MAJOR_VERSION.$GENERIC_MINOR_VERSION.$GENERIC_MICRO_VERSION
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GENERIC_RELEASE=$GENERIC_MAJOR_VERSION.$GENERIC_MINOR_VERSION
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AC_SUBST([GENERIC_RELEASE])
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AC_SUBST([GENERIC_VERSION])
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AC_CONFIG_HEADERS([config_auto.h:config/config.h.in])
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# default conditional
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AM_CONDITIONAL([T_WIN], false)
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AM_CONDITIONAL([OSX], false)
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AM_CONDITIONAL([GRAPHICS_DISABLED], false)
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AC_SUBST([AM_CPPFLAGS])
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OPENCL_INC="/opt/AMDAPP/include"
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OPENCL_LIBS="-lOpenCL"
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#############################
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#
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# Platform specific setup
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#
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#############################
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AC_CANONICAL_HOST
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case "${host_os}" in
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mingw*)
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AM_CONDITIONAL([T_WIN], true)
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AM_CONDITIONAL([ADD_RT], false)
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AC_SUBST([AM_LDFLAGS], ['-Wl,-no-undefined -Wl,--as-needed'])
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;;
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cygwin*)
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AM_CONDITIONAL([ADD_RT], false)
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AC_SUBST([NOUNDEFINED], ['-no-undefined'])
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;;
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solaris*)
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LIBS="$LIBS -lsocket -lnsl -lrt -lxnet"
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AM_CONDITIONAL([ADD_RT], true)
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;;
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*darwin*)
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OPENCL_LIBS=""
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OPENCL_INC=""
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AM_CONDITIONAL([ADD_RT], false)
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;;
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*android*)
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AM_CONDITIONAL([ADD_RT], false)
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;;
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powerpc-*-darwin*)
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OPENCL_LIBS=""
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;;
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*)
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# default
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AM_CONDITIONAL([ADD_RT], true)
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;;
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esac
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WERROR=-Werror
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# The test code used by AX_CHECK_COMPILE_FLAG uses an empty statement.
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# clang++-8 can emit a warning for that which must be disabled.
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AX_CHECK_COMPILE_FLAG([-Wno-extra-semi-stmt], [WERROR="$WERROR -Wno-extra-semi-stmt"])
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# The test code used by AX_CHECK_COMPILE_FLAG uses macros which are unused.
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# That must not break the check, so disable a related warning if necessary.
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AX_CHECK_COMPILE_FLAG([-Wno-unused-macros], [WERROR="$WERROR -Wno-unused-macros"])
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## Checks for supported compiler options.
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AX_CHECK_COMPILE_FLAG([-mavx], [avx=true], [avx=false], [$WERROR])
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AM_CONDITIONAL([AVX_OPT], ${avx})
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AX_CHECK_COMPILE_FLAG([-mavx2], [avx2=true], [avx2=false], [$WERROR])
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AM_CONDITIONAL([AVX2_OPT], $avx2)
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AX_CHECK_COMPILE_FLAG([-msse4.1], [sse41=true], [sse41=false], [$WERROR])
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AM_CONDITIONAL([SSE41_OPT], $sse41)
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AX_CHECK_COMPILE_FLAG([-march=native], [arch_native=true], [arch_native=false], [$WERROR])
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AM_CONDITIONAL([MARCH_NATIVE_OPT], $arch_native)
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AC_ARG_WITH([extra-includes],
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[AS_HELP_STRING([--with-extra-includes=DIR],
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[Define an additional directory for include files])],
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[if test -d "$withval" ; then
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CFLAGS="$CFLAGS -I$withval"
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else
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AC_MSG_ERROR([Cannot stat directory $withval])
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fi])
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AC_ARG_WITH([extra-libraries],
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[AS_HELP_STRING([--with-extra-libraries=DIR],
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[Define an additional directory for library files])],
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[if test -d "$withval" ; then
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LDFLAGS="$LDFLAGS -L$withval"
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else
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AC_MSG_ERROR([Cannot stat directory $withval])
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fi])
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AC_MSG_CHECKING([--enable-graphics argument])
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AC_ARG_ENABLE([graphics],
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AS_HELP_STRING([--disable-graphics], [disable graphics (ScrollView)]))
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AC_MSG_RESULT([$enable_graphics])
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if test "$enable_graphics" = "no"; then
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AC_DEFINE([GRAPHICS_DISABLED], [], [Disable graphics])
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AM_CONDITIONAL([GRAPHICS_DISABLED], true)
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fi
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AC_MSG_CHECKING([--enable-legacy argument])
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AC_ARG_ENABLE([legacy],
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AS_HELP_STRING([--disable-legacy], [disable the legacy OCR engine]))
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AC_MSG_RESULT([$enable_legacy])
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AM_CONDITIONAL([DISABLED_LEGACY_ENGINE], test "$enable_legacy" = "no")
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# check whether to build embedded version
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AC_MSG_CHECKING([--enable-embedded argument])
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AC_ARG_ENABLE([embedded],
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AS_HELP_STRING([--enable-embedded], [enable embedded build [default=no]]))
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AC_MSG_RESULT([$enable_embedded])
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AM_CONDITIONAL([EMBEDDED], [test "$enable_embedded" = "yes"])
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if test "$enable_embedded" = "yes"; then
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AM_CPPFLAGS="-DEMBEDDED $AM_CPPFLAGS"
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fi
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# check whether to build OpenMP support
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AC_OPENMP
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have_tiff=false
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# Note that the first usage of AC_CHECK_HEADERS must be unconditional.
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AC_CHECK_HEADERS([tiffio.h], [have_tiff=true], [have_tiff=false])
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# check whether to build opencl version
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AC_MSG_CHECKING([--enable-opencl argument])
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AC_ARG_ENABLE([opencl],
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AS_HELP_STRING([--enable-opencl], [enable opencl build [default=no]]))
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AC_MSG_RESULT([$enable_opencl])
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# check for opencl header
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have_opencl=false
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if test "$enable_opencl" = "yes"; then
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AC_CHECK_HEADERS([CL/cl.h], [have_opencl=true], [
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AC_CHECK_HEADERS(OpenCL/cl.h, [have_opencl=true], [have_opencl=false])
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])
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fi
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# https://lists.apple.com/archives/unix-porting/2009/Jan/msg00026.html
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m4_define([MY_CHECK_FRAMEWORK],
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[AC_CACHE_CHECK([if -framework $1 works],[my_cv_framework_$1],
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[save_LIBS="$LIBS"
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LIBS="$LIBS -framework $1"
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AC_LINK_IFELSE([AC_LANG_PROGRAM([],[])],
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[my_cv_framework_$1=yes],
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[my_cv_framework_$1=no])
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LIBS="$save_LIBS"
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])
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if test "$my_cv_framework_$1"="yes"; then
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AC_DEFINE(AS_TR_CPP([HAVE_FRAMEWORK_$1]), 1,
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[Define if you have the $1 framework])
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AS_TR_CPP([FRAMEWORK_$1])="-framework $1"
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AC_SUBST(AS_TR_CPP([FRAMEWORK_$1]))
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fi]
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)
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have_opencl_lib=false
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OPENCL_CPPFLAGS=''
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OPENCL_LDFLAGS=''
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case "${host_os}" in
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*darwin* | *-macos10*)
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echo "checking for OpenCL framework"
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MY_CHECK_FRAMEWORK([OpenCL])
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if test $my_cv_framework_OpenCL = yes; then
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have_opencl_lib=true
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fi
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if test "$enable_opencl" = "yes"; then
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if !($have_opencl_lib); then
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AC_MSG_ERROR([Required OpenCL library not found!])
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fi
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AM_CPPFLAGS="-DUSE_OPENCL $AM_CPPFLAGS"
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OPENCL_CPPFLAGS=""
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OPENCL_LDFLAGS="-framework OpenCL"
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fi
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;;
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*)
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# default
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if test "$enable_opencl" = "yes"; then
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AC_CHECK_LIB([OpenCL], [clGetPlatformIDs],
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[have_opencl_lib=true], [have_opencl_lib=false])
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if !($have_opencl); then
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AC_MSG_ERROR([Required OpenCL headers not found!])
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fi
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if !($have_opencl_lib); then
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AC_MSG_ERROR([Required OpenCL library not found!])
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fi
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AM_CPPFLAGS="-DUSE_OPENCL $AM_CPPFLAGS"
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OPENCL_CPPFLAGS="-I${OPENCL_INC}"
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OPENCL_LDFLAGS="${OPENCL_LIBS}"
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fi
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;;
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esac
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AM_CONDITIONAL([USE_OPENCL], [test "$enable_opencl" = "yes"])
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AC_SUBST([OPENCL_CPPFLAGS])
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AC_SUBST([OPENCL_LDFLAGS])
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# check whether to build tesseract with -fvisibility=hidden -fvisibility-inlines-hidden
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# http://gcc.gnu.org/wiki/Visibility
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# http://groups.google.com/group/tesseract-dev/browse_thread/thread/976645ae98189127
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AC_MSG_CHECKING([--enable-visibility argument])
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AC_ARG_ENABLE([visibility],
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AS_HELP_STRING([--enable-visibility],
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[enable experimental build with -fvisibility [default=no]]))
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AC_MSG_RESULT([$enable_visibility])
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AM_CONDITIONAL([VISIBILITY], [test "$enable_visibility" = "yes"])
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# Check if tessdata-prefix is disabled
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AC_MSG_CHECKING([whether to use tessdata-prefix])
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AC_ARG_ENABLE([tessdata-prefix],
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[AS_HELP_STRING([--disable-tessdata-prefix],
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[don't set TESSDATA-PREFIX during compile])],
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[tessdata_prefix="no"], [tessdata_prefix="yes"])
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AC_MSG_RESULT([$tessdata_prefix])
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AM_CONDITIONAL([NO_TESSDATA_PREFIX], [test "$tessdata_prefix" = "no"])
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# Check whether to enable debugging
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AC_MSG_CHECKING([whether to enable debugging])
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AC_ARG_ENABLE([debug],
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AS_HELP_STRING([--enable-debug], [turn on debugging [default=no]]))
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AC_MSG_RESULT([$enable_debug])
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if test x"$enable_debug" = x"yes"; then
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AM_CXXFLAGS="$AM_CXXFLAGS -g -Wall -O0 -DDEBUG"
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AM_CPPFLAGS="$AM_CPPFLAGS -g -Wall -DDEBUG"
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else
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AM_CXXFLAGS="$AM_CXXFLAGS -O2 -DNDEBUG"
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AM_CPPFLAGS="$AM_CPPFLAGS -DNDEBUG"
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fi
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#localedir='${prefix}/share/locale'
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# Always look into a "gnu" directory.
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curwd=`pwd`
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if test -d $curwd/gnu/include ; then
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CPPFLAGS="$CPPFLAGS -I$curwd/gnu/include"
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fi
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if test -d $curwd/gnu/lib ; then
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LDFLAGS="$LDFLAGS -L$curwd/gnu/lib"
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fi
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# ----------------------------------------
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# Additional checking of compiler characteristics
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# ----------------------------------------
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# Check Endianness. If Big Endian, this will define WORDS_BIGENDIAN
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AC_C_BIGENDIAN
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# ----------------------------------------
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# Init libtool
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# ----------------------------------------
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LT_INIT
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# ----------------------------------------
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# C++ related options
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# ----------------------------------------
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AC_MSG_CHECKING([if compiling with clang])
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AC_COMPILE_IFELSE(
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[AC_LANG_PROGRAM([], [[
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#ifndef __clang__
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not clang
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#endif
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]])],
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[CLANG=yes], [CLANG=no])
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AC_MSG_RESULT([$CLANG])
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dnl **********************
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dnl Turn on C++11 or newer
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dnl **********************
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CPLUSPLUS=
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AX_CHECK_COMPILE_FLAG([-std=c++11], [cplusplus11=true], [cplusplus11=false], [$WERROR])
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if $cplusplus11; then
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CPLUSPLUS=11
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fi
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AX_CHECK_COMPILE_FLAG([-std=c++14], [cplusplus14=true], [cplusplus14=false], [$WERROR])
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if $cplusplus14; then
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CPLUSPLUS=14
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fi
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if test -z "$CPLUSPLUS"; then
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AC_MSG_ERROR([Your compiler does not have the necessary C++11 support! Cannot proceed.])
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fi
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# Set C++11 or C++14 support based on platform/compiler
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case "${host_os}" in
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cygwin*)
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CXXFLAGS="$CXXFLAGS -std=gnu++$CPLUSPLUS"
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;;
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*-darwin* | *-macos10*)
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if test "x$CLANG" = "xyes"; then
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CXXFLAGS="$CXXFLAGS -std=c++$CPLUSPLUS"
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LDFLAGS="$LDFLAGS -stdlib=libc++"
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else
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CXXFLAGS="$CXXFLAGS -std=c++$CPLUSPLUS"
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fi
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;;
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*)
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# default
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CXXFLAGS="$CXXFLAGS -std=c++$CPLUSPLUS"
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;;
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esac
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# ----------------------------------------
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# Check for libraries
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# ----------------------------------------
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AC_SEARCH_LIBS([pthread_create], [pthread])
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# ----------------------------------------
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# Checks for header files.
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# ----------------------------------------
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AC_HEADER_STDC
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AC_HEADER_TIME
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AC_HEADER_SYS_WAIT
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AC_CHECK_HEADERS([sys/ipc.h sys/shm.h])
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AC_CHECK_HEADERS([limits.h malloc.h])
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# Enable use of system-defined bool type if available:
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AC_HEADER_STDBOOL
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# ----------------------------------------
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# Check for programs needed to build documentation.
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# ----------------------------------------
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AC_CHECK_PROG([have_asciidoc], asciidoc, true, false)
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AC_CHECK_PROG([have_xsltproc], xsltproc, true, false)
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if $have_asciidoc && $have_xsltproc; then
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AM_CONDITIONAL([ASCIIDOC], true)
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else
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AM_CONDITIONAL([ASCIIDOC], false)
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fi
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# ----------------------------------------
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# Checks for typedefs, structures, and compiler characteristics.
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# ----------------------------------------
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AC_CHECK_TYPES([wchar_t],,, [#include "wchar.h"])
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AC_CHECK_TYPES([long long int])
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AC_CHECK_TYPES([off_t],,, [#include "sys/types.h"])
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AC_CHECK_TYPES([mbstate_t],,, [#include "wchar.h"])
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# ----------------------------------------
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# Test auxiliary packages
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# ----------------------------------------
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PKG_CHECK_MODULES([LEPTONICA], [lept >= 1.74], [have_lept=true], [have_lept=false])
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if $have_lept; then
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CPPFLAGS="$CPPFLAGS $LEPTONICA_CFLAGS"
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else
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AC_MSG_ERROR([Leptonica 1.74 or higher is required. Try to install libleptonica-dev package.])
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fi
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PKG_CHECK_MODULES([libarchive], [libarchive], [have_libarchive=true], [have_libarchive=false])
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AM_CONDITIONAL([HAVE_LIBARCHIVE], [$have_libarchive])
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if $have_libarchive; then
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AC_DEFINE([HAVE_LIBARCHIVE], [], [Enable libarchive])
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CPPFLAGS="$CPPFLAGS $libarchive_CFLAGS"
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fi
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AM_CONDITIONAL([ENABLE_TRAINING], true)
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# Check availability of ICU packages.
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PKG_CHECK_MODULES([ICU_UC], [icu-uc >= 52.1], [have_icu_uc=true], [have_icu_uc=false])
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PKG_CHECK_MODULES([ICU_I18N], [icu-i18n >= 52.1], [have_icu_i18n=true], [have_icu_i18n=false])
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if !($have_icu_uc && $have_icu_i18n); then
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if !($have_icu); then
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AC_MSG_WARN([icu 52.1 or higher is required, but was not found.])
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AC_MSG_WARN([Training tools WILL NOT be built.])
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AC_MSG_WARN([Try to install libicu-devel package.])
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AM_CONDITIONAL([ENABLE_TRAINING], false)
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fi
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else
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CPPFLAGS="$CPPFLAGS $ICU_UC_CFLAGS $ICU_I18N_CFLAGS"
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fi
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# Check location of pango headers
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PKG_CHECK_MODULES([pango], [pango >= 1.22.0], [have_pango=true], [have_pango=false])
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if !($have_pango); then
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|
AC_MSG_WARN([pango 1.22.0 or higher is required, but was not found.])
|
|
AC_MSG_WARN([Training tools WILL NOT be built.])
|
|
AC_MSG_WARN([Try to install libpango1.0-dev package.])
|
|
AM_CONDITIONAL([ENABLE_TRAINING], false)
|
|
else
|
|
CPPFLAGS="$CPPFLAGS $pango_CFLAGS"
|
|
fi
|
|
|
|
# Check location of cairo headers
|
|
PKG_CHECK_MODULES([cairo], [cairo], [have_cairo=true], [have_cairo=false])
|
|
if !($have_cairo); then
|
|
AC_MSG_WARN([Training tools WILL NOT be built because of missing cairo library.])
|
|
AC_MSG_WARN([Try to install libcairo-dev?? package.])
|
|
AM_CONDITIONAL([ENABLE_TRAINING], false)
|
|
else
|
|
CPPFLAGS="$CPPFLAGS $cairo_CFLAGS"
|
|
fi
|
|
|
|
|
|
# ----------------------------------------
|
|
# Final Tasks and Output
|
|
# ----------------------------------------
|
|
|
|
# Output files
|
|
AC_CONFIG_FILES([Makefile tesseract.pc])
|
|
AC_CONFIG_FILES([src/api/Makefile])
|
|
AC_CONFIG_FILES([src/api/tess_version.h])
|
|
AC_CONFIG_FILES([src/arch/Makefile])
|
|
AC_CONFIG_FILES([src/ccmain/Makefile])
|
|
AC_CONFIG_FILES([src/opencl/Makefile])
|
|
AC_CONFIG_FILES([src/ccstruct/Makefile])
|
|
AC_CONFIG_FILES([src/ccutil/Makefile])
|
|
AC_CONFIG_FILES([src/classify/Makefile])
|
|
AC_CONFIG_FILES([src/cutil/Makefile])
|
|
AC_CONFIG_FILES([src/dict/Makefile])
|
|
AC_CONFIG_FILES([src/lstm/Makefile])
|
|
AC_CONFIG_FILES([src/textord/Makefile])
|
|
AC_CONFIG_FILES([src/viewer/Makefile])
|
|
AC_CONFIG_FILES([src/wordrec/Makefile])
|
|
AC_CONFIG_FILES([tessdata/Makefile])
|
|
AC_CONFIG_FILES([tessdata/configs/Makefile])
|
|
AC_CONFIG_FILES([tessdata/tessconfigs/Makefile])
|
|
AC_CONFIG_FILES([unittest/Makefile])
|
|
AC_CONFIG_FILES([java/Makefile])
|
|
AC_CONFIG_FILES([java/com/Makefile])
|
|
AC_CONFIG_FILES([java/com/google/Makefile])
|
|
AC_CONFIG_FILES([java/com/google/scrollview/Makefile])
|
|
AC_CONFIG_FILES([java/com/google/scrollview/events/Makefile])
|
|
AC_CONFIG_FILES([java/com/google/scrollview/ui/Makefile])
|
|
AC_CONFIG_FILES([doc/Makefile])
|
|
AM_COND_IF([ENABLE_TRAINING], [AC_CONFIG_FILES(src/training/Makefile)])
|
|
AC_OUTPUT
|
|
|
|
# Final message
|
|
echo ""
|
|
echo "Configuration is done."
|
|
echo "You can now build and install $PACKAGE_NAME by running:"
|
|
echo ""
|
|
echo "$ make"
|
|
echo "$ sudo make install"
|
|
echo "$ sudo ldconfig"
|
|
echo ""
|
|
|
|
AM_COND_IF([ASCIIDOC],
|
|
[
|
|
echo "This will also build the documentation."
|
|
], [
|
|
echo "Documentation will not be built because asciidoc or xsltproc is missing."
|
|
]
|
|
)
|
|
|
|
# echo "$ sudo make install LANGS=\"eng ara deu\""
|
|
# echo " Or:"
|
|
# echo "$ sudo make install-langs"
|
|
echo ""
|
|
|
|
AM_COND_IF([ENABLE_TRAINING],
|
|
[
|
|
echo "Training tools can be built and installed with:"
|
|
echo ""
|
|
echo "$ make training"
|
|
echo "$ sudo make training-install"
|
|
echo ""],
|
|
[
|
|
echo "You can not build training tools because of missing dependency."
|
|
echo "Check configure output for details."
|
|
echo ""]
|
|
)
|
|
|
|
# ----------------------------------------
|
|
# CONFIG Template
|
|
# ----------------------------------------
|
|
|
|
# Fence added in configuration file
|
|
AH_TOP([
|
|
#ifndef CONFIG_AUTO_H
|
|
#define CONFIG_AUTO_H
|
|
/* config_auto.h: begin */
|
|
])
|
|
|
|
# Stuff added at bottom of file
|
|
AH_BOTTOM([
|
|
|
|
/* Miscellaneous defines */
|
|
#define AUTOCONF 1
|
|
|
|
/* Not used yet
|
|
#ifndef NO_GETTEXT
|
|
#define USING_GETTEXT
|
|
#endif
|
|
*/
|
|
|
|
/* config_auto.h: end */
|
|
#endif
|
|
])
|