1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
|
# Detect if certain attributes are supported by the compiler
# The result will be used to set macros in include/igraph_config.h
# GCC-style enum value deprecation
include(CheckCSourceCompiles)
include(CMakePushCheckState)
# Only check with Clang and GCC as we assume that the -Werror option is supported
# For other compilers, assume that the attribute is unsupported.
if(CMAKE_C_COMPILER_ID MATCHES "Clang|GNU")
cmake_push_check_state()
# Require compiling with no warning:
set(CMAKE_REQUIRED_FLAGS "${CMAKE_REQUIRED_FLAGS} -Werror")
check_c_source_compiles(
"enum { A __attribute__ ((deprecated)) = 0 }; int main(void) { return 0; }"
COMPILER_HAS_DEPRECATED_ENUMVAL_ATTR
)
cmake_pop_check_state()
else()
set(COMPILER_HAS_DEPRECATED_ENUMVAL_ATTR FALSE)
endif()
if(COMPILER_HAS_DEPRECATED_ENUMVAL_ATTR)
set(IGRAPH_DEPRECATED_ENUMVAL "__attribute__ ((deprecated))")
endif()
|
