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Fix fseeko/ftello/strcasecmp not being defined #3

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Fix fseeko/ftello/strcasecmp not being defined #3

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18 changes: 17 additions & 1 deletion CMakeLists.txt
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Original file line number Diff line number Diff line change
Expand Up @@ -117,7 +117,23 @@ test_large_files(LARGE_FILES_SUPPORTED)
if(LARGE_FILES_SUPPORTED)
add_definitions(${LARGE_FILES_DEFINITIONS})
endif()
check_function_exists(fseeko HAVE_FSEEKO)
check_c_source_compiles("
#define _POSIX_C_SOURCE 200112L
#include <stdio.h>
int main(int argc, char **argv) {
FILE *file = fopen(\"file\", \"r\");
int retval = !(fseeko(file, 0, SEEK_SET) >= 0 && ftello(file) >= 0);
fclose(file);
return retval;
}" HAVE_FSEEKO)
if(HAVE_FSEEKO)
add_definitions(-D_POSIX_C_SOURCE=200112L)
endif()

if(NOT WIN32)
# Needed for strcasecmp
add_definitions(-D_DEFAULT_SOURCE)
endif()

if(NOT MSVC AND (CMAKE_COMPILER_IS_GNUCC OR CMAKE_C_COMPILER_ID MATCHES "Clang"))
add_compile_options(-Wall)
Expand Down