qt5base-lts/cmake/FindWrapDoubleConversion.cmake
Alexandru Croitor ace5495870 Fix a few of the Wrap modules to protect against double creation of
targets. This created issues when trying to build standalone examples.

Change-Id: Iaaea2b537793ae25fbf3143cc205574446aa4ad1
Reviewed-by: Kevin Funk <kevin.funk@kdab.com>
2019-06-05 12:30:47 +00:00

62 lines
2.1 KiB
CMake

# We can't create the same interface imported target multiple times, CMake will complain if we do
# that. This can happen if the find_package call is done in multiple different subdirectories.
if(TARGET WrapDoubleConversion::WrapDoubleConversion)
set(WrapDoubleConversion_FOUND ON)
return()
endif()
add_library(WrapDoubleConversion::WrapDoubleConversion INTERFACE IMPORTED)
find_package(double-conversion)
if (double-conversion_FOUND)
include(FeatureSummary)
set_package_properties(double-conversion PROPERTIES TYPE REQUIRED)
target_link_libraries(WrapDoubleConversion::WrapDoubleConversion
INTERFACE double-conversion::double-conversion)
set(WrapDoubleConversion_FOUND 1)
return()
endif()
include(CheckCXXSourceCompiles)
check_cxx_source_compiles("
#include <stdio.h>
#include <locale.h>
int main(int argc, char *argv[]) {
_locale_t invalidLocale = NULL;
double a = 3.14;
const char *format = \"invalid format\";
_sscanf_l(argv[0], invalidLocale, format, &a, &argc);
_snprintf_l(argv[0], 1, invalidLocale, format, a);
}" HAVE__SPRINTF_L)
check_cxx_source_compiles("
#include <stdio.h>
#include <xlocale.h>
int main(int argc, char *argv[]) {
locale_t invalidLocale = NULL;
double a = 3.14;
const char *format = \"invalid format\";
snprintf_l(argv[0], 1, invalidLocale, format, a);
sscanf_l(argv[0], invalidLocale, format, &a, &argc);
return 0;
}" HAVE_SPRINTF_L)
# In a static build, we need to find the package to bring the target into scope.
find_package(QtDoubleConversion QUIET)
if (HAVE__SPRINTF_L OR HAVE_SPRINTF_L)
target_compile_definitions(WrapDoubleConversion::WrapDoubleConversion
INTERFACE QT_NO_DOUBLECONVERSION)
set(WrapDoubleConversion_FOUND 1)
elseif(TARGET QtDoubleConversion)
# If a Config package wasn't found, and the C++ library doesn't contain the necessary functions,
# use the library bundled with Qt.
target_link_libraries(WrapDoubleConversion::WrapDoubleConversion INTERFACE QtDoubleConversion)
set(WrapDoubleConversion_FOUND 1)
else()
set(WrapDoubleConversion_FOUND 0)
endif()