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3f6aa735e9
GCC < 4.1.0 possibly has a problem w/ choosing an llabs() unambigiously from stdlib.h and cstdlib See also http://gcc.gnu.org/bugzilla/show_bug.cgi?id=13943
91 lines
2.6 KiB
CMake
91 lines
2.6 KiB
CMake
include(CheckCSourceCompiles)
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include(CheckCXXSourceCompiles)
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if (${CMAKE_SYSTEM_NAME} MATCHES "FreeBSD")
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# alternate malloc is faster for FreeBSD, but needs more testing
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# need to add way to set this from the command line
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set(USE_NMALLOC true)
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elseif (${CMAKE_SYSTEM_NAME} MATCHES "OpenBSD")
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set(USE_NMALLOC true)
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elseif (${CMAKE_SYSTEM_NAME} MATCHES "Darwin")
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# The following may have a greater scope than just Darwin
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# (i.e. any platform w/ GCC < 4.1.0), but I've only seen
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# it on OS X 10.5, which has GCC 4.0.1, so the workaround
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# will be stuck here for now.
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#
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# See also http://gcc.gnu.org/bugzilla/show_bug.cgi?id=13943
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check_cxx_source_compiles("
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#include <math.h>
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#include <cstdlib>
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using namespace std;
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int main() {
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llabs(1);
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return 0;
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}
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" darwin_llabs_works)
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if (NOT darwin_llabs_works)
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# abs() should be used in this case, the long long version should
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# exist in the __gnu_cxx namespace
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set(DARWIN_NO_LLABS true)
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endif ()
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elseif (${CMAKE_SYSTEM_NAME} MATCHES "Linux")
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set(HAVE_LINUX true)
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elseif (${CMAKE_SYSTEM_NAME} MATCHES "Solaris")
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set(SOCKET_LIBS nsl socket)
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elseif (${CMAKE_SYSTEM_NAME} MATCHES "osf")
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# Workaround ip_hl vs. ip_vhl problem in netinet/ip.h
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add_definitions(-D__STDC__=2)
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elseif (${CMAKE_SYSTEM_NAME} MATCHES "irix")
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list(APPEND CMAKE_C_FLAGS -xansi -signed -g3)
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list(APPEND CMAKE_CXX_FLAGS -xansi -signed -g3)
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elseif (${CMAKE_SYSTEM_NAME} MATCHES "ultrix")
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list(APPEND CMAKE_C_FLAGS -std1 -g3)
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list(APPEND CMAKE_CXX_FLAGS -std1 -g3)
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check_c_source_compiles("
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#include <sys/types.h>
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int main() {
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void c(const struct a *);
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return 0;
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}
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" have_ultrix_const)
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if (NOT have_ultrix_const)
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set(NEED_ULTRIX_CONST_HACK true)
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endif ()
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elseif (${CMAKE_SYSTEM_NAME} MATCHES "hpux" OR
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${CMAKE_SYSTEM_NAME} MATCHES "HP-UX")
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include(CheckCSourceCompiles)
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set(CMAKE_REQUIRED_FLAGS -Aa)
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set(CMAKE_REQUIRED_DEFINITIONS -D_HPUX_SOURCE)
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check_c_source_compiles("
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#include <sys/types.h>
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int main() {
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int frob(int, char *);
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return 0;
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}
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" have_ansi_prototypes)
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set(CMAKE_REQUIRED_FLAGS)
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set(CMAKE_REQUIRED_DEFINITIONS)
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if (have_ansi_prototypes)
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add_definitions(-D_HPUX_SOURCE)
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list(APPEND CMAKE_C_FLAGS -Aa)
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list(APPEND CMAKE_CXX_FLAGS -Aa)
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endif ()
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if (NOT have_ansi_prototypes)
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message(FATAL_ERROR "Can't get HPUX compiler to handle ANSI prototypes")
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endif ()
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endif ()
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