Use flat make for include/tesseract

Signed-off-by: Stefan Weil <sw@weilnetz.de>

Makefile.am

@@ -22,7 +22,7 @@ endif
 
 SUBDIRS = src/arch src/ccutil src/viewer src/cutil src/opencl src/ccstruct
 SUBDIRS += src/dict src/classify src/wordrec src/textord src/lstm
-SUBDIRS += src/ccmain src/api . tessdata doc unittest include/tesseract
+SUBDIRS += src/ccmain src/api . tessdata doc unittest
 
 EXTRA_DIST = README.md LICENSE
 EXTRA_DIST += aclocal.m4 config configure.ac autogen.sh
@@ -65,6 +65,25 @@ doc-clean:
 pkgconfigdir = $(libdir)/pkgconfig
 pkgconfig_DATA = tesseract.pc
 
+pkginclude_HEADERS = $(top_builddir)/include/tesseract/version.h
+pkginclude_HEADERS += include/tesseract/apitypes.h
+pkginclude_HEADERS += include/tesseract/baseapi.h
+pkginclude_HEADERS += include/tesseract/capi.h
+pkginclude_HEADERS += include/tesseract/genericvector.h
+pkginclude_HEADERS += include/tesseract/helpers.h
+pkginclude_HEADERS += include/tesseract/ltrresultiterator.h
+pkginclude_HEADERS += include/tesseract/ocrclass.h
+pkginclude_HEADERS += include/tesseract/osdetect.h
+pkginclude_HEADERS += include/tesseract/pageiterator.h
+pkginclude_HEADERS += include/tesseract/platform.h
+pkginclude_HEADERS += include/tesseract/publictypes.h
+pkginclude_HEADERS += include/tesseract/renderer.h
+pkginclude_HEADERS += include/tesseract/resultiterator.h
+pkginclude_HEADERS += include/tesseract/serialis.h
+pkginclude_HEADERS += include/tesseract/strngs.h
+pkginclude_HEADERS += include/tesseract/thresholder.h
+pkginclude_HEADERS += include/tesseract/unichar.h
+
 # fuzzer-api is used for fuzzing tests.
 # They are run by OSS-Fuzz https://oss-fuzz.com/, but can also be run locally.
 # Note: -fsanitize=fuzzer currently requires the clang++ compiler.

configure.ac

@@ -486,7 +486,6 @@ fi
 # ----------------------------------------
 
 # Output files
-AC_CONFIG_FILES([include/tesseract/Makefile])
 AC_CONFIG_FILES([include/tesseract/version.h])
 AC_CONFIG_FILES([Makefile tesseract.pc])
 AC_CONFIG_FILES([src/api/Makefile])

include/tesseract/Makefile.am

@@ -1,54 +0,0 @@
-AM_CPPFLAGS += \
-  -I$(top_builddir)/include \
-  -I$(top_srcdir)/include \
-  -I$(top_srcdir)/api \
-  -I$(top_srcdir)/src/arch \
-  -I$(top_srcdir)/src/classify \
-  -I$(top_srcdir)/src/ccmain \
-  -I$(top_srcdir)/src/ccstruct \
-  -I$(top_srcdir)/src/ccutil \
-  -I$(top_srcdir)/src/cutil \
-  -I$(top_srcdir)/src/dict \
-  -I$(top_srcdir)/src/lstm \
-  -I$(top_srcdir)/src/opencl \
-  -I$(top_srcdir)/src/textord \
-  -I$(top_srcdir)/src/viewer \
-  -I$(top_srcdir)/src/wordrec
-
-if !NO_TESSDATA_PREFIX
-AM_CPPFLAGS += -DTESSDATA_PREFIX=@datadir@
-endif
-
-if DISABLED_LEGACY_ENGINE
-AM_CPPFLAGS += -DDISABLED_LEGACY_ENGINE
-endif
-
-if VISIBILITY
-AM_CPPFLAGS += -fvisibility=hidden -fvisibility-inlines-hidden
-endif
-
-
-pkginclude_HEADERS = \
-  apitypes.h \
-  baseapi.h \
-  capi.h renderer.h \
-  version.h
-
-pkginclude_HEADERS += \
-  thresholder.h \
-  osdetect.h \
-  ltrresultiterator.h \
-  pageiterator.h \
-  resultiterator.h
-
-pkginclude_HEADERS += publictypes.h
-
-pkginclude_HEADERS += \
-  genericvector.h \
-  helpers.h \
-  ocrclass.h \
-  platform.h \
-  serialis.h \
-  strngs.h \
-  unichar.h
-