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https://bitbucket.org/smil3y/kde-playground.git
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50 lines
1.1 KiB
CMake
50 lines
1.1 KiB
CMake
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include(CheckCXXSourceCompiles)
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set(VA_COPY_TEST_SOURCE
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"
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#include <stdarg.h>
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#include <stdlib.h>
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void f (int i, ...) {
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va_list args1, args2;
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va_start (args1, i);
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va_copy (args2, args1);
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if (va_arg (args2, int) != 42 || va_arg (args1, int) != 42)
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exit (1);
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va_end (args1); va_end (args2);
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}
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int main() {
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f (0, 42);
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return 0;
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}
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")
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set(__VA_COPY_TEST_SOURCE
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"
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#include <stdarg.h>
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#include <stdlib.h>
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void f (int i, ...) {
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va_list args1, args2;
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va_start (args1, i);
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__va_copy (args2, args1);
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if (va_arg (args2, int) != 42 || va_arg (args1, int) != 42)
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exit (1);
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va_end (args1); va_end (args2);
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}
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int main() {
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f (0, 42);
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return 0;
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}
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")
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check_cxx_source_compiles("${VA_COPY_TEST_SOURCE}" HAVE_VA_COPY)
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if(HAVE_VA_COPY)
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set(VA_COPY va_copy CACHE STRING "va_copy function")
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else(HAVE_VA_COPY)
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check_cxx_source_compiles("${__VA_COPY_TEST_SOURCE}" HAVE___VA_COPY)
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if(HAVE___VA_COPY)
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set(VA_COPY __va_copy CACHE STRING "__va_copy function")
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else(HAVE___VA_COPY)
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message(FATAL_ERROR "Either va_copy or __va_copy must be present. Please check your libc.")
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endif(HAVE___VA_COPY)
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endif(HAVE_VA_COPY)
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