CMake/Tests/CompileFeatures/genex_test.c
Stephen Kelly fb3487a997 Features: Fix C90 feature detection.
This bug caused c_function_prototypes to not be recorded at configure
time when compiling with -std=gnu99 or similar. In the case of feature
recording, that was not a problem, because the logic in
CMakeDetermineCompileFeatures.cmake currently assumes that a feature
present for an earlier standard is present for a later standard.

However, the detection strings are also used in WriteCompilerDetectionHeader,
so the feature macro has been defined to '0' when using a later language
dialect.

Fix that by not checking the existence of the __STDC_VERSION__ macro at
all when detecting C90 features.
2015-02-04 18:38:21 -05:00

39 lines
725 B
C

#ifndef EXPECT_C_STATIC_ASSERT
# error EXPECT_C_STATIC_ASSERT not defined
#endif
#ifndef EXPECT_C_FUNCTION_PROTOTYPES
# error EXPECT_C_FUNCTION_PROTOTYPES not defined
#endif
#ifndef EXPECT_C_RESTRICT
# error EXPECT_C_RESTRICT not defined
#endif
#if !EXPECT_C_STATIC_ASSERT
#if EXPECT_C_STATIC_ASSERT
#error "Expect c_static_assert feature"
#endif
#else
#if !EXPECT_C_STATIC_ASSERT
#error "Expect no c_static_assert feature"
#endif
#endif
#if !EXPECT_C_FUNCTION_PROTOTYPES
# error Expect c_function_prototypes support
#endif
#if !EXPECT_C_RESTRICT
# if EXPECT_C_RESTRICT
# error Expect c_restrict support
# endif
#else
# if !EXPECT_C_RESTRICT
# error Expect no c_restrict support
# endif
#endif
int main()
{
}