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Check if platform supports feenableexcept

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feenableexcept is not supported by uclibc

Signed-off-by: Gilles Talis <gilles.talis@gmail.com>
[Retrieved (and updated to add cmake support and simplify configure.ac)
from
https://git.buildroot.net/buildroot/tree/package/tesseract-ocr/0001-Check-if-platform-supports-feenableexcept.patch]
Signed-off-by: Fabrice Fontaine <fontaine.fabrice@gmail.com>
This commit is contained in:
Gilles Talis 2022-01-11 13:35:08 +01:00 committed by Fabrice Fontaine
parent 5d5cd77e3d
commit be15b46c60
3 changed files with 11 additions and 1 deletions
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7
cmake/Configure.cmake
View File

@ -104,6 +104,13 @@ set(types_list
)
check_types(types_list)
list(APPEND CMAKE_REQUIRED_DEFINITIONS -D_GNU_SOURCE)
list(APPEND CMAKE_REQUIRED_LIBRARIES -lm)
set(functions_list
feenableexcept
)
check_functions(functions_list)
file(APPEND ${AUTOCONFIG_SRC} "
/* Version number */
#cmakedefine PACKAGE_VERSION \"${PACKAGE_VERSION}\"

3
configure.ac
View File

@ -188,6 +188,9 @@ case "${host_cpu}" in
esac
# check whether feenableexcept is supported. some C libraries (e.g. uclibc) don't.
AC_CHECK_FUNCS([feenableexcept])
AX_CHECK_COMPILE_FLAG([-fopenmp-simd], [openmp_simd=true], [openmp_simd=false], [$WERROR])
AM_CONDITIONAL([OPENMP_SIMD], $openmp_simd)

2
src/tesseract.cpp
View File

@ -629,7 +629,7 @@ static void PreloadRenderers(tesseract::TessBaseAPI &api,
**********************************************************************/
int main(int argc, char **argv) {
#if defined(__USE_GNU)
#if defined(__USE_GNU) && defined(HAVE_FEENABLEEXCEPT)
// Raise SIGFPE.
# if defined(__clang__)
// clang creates code which causes some FP exceptions, so don't enable those.