diff options
| -rwxr-xr-x | configure | 47 | ||||
| -rw-r--r-- | configure.ac | 32 | ||||
| -rw-r--r-- | src/common/cbasetypes.h | 6 |
3 files changed, 76 insertions, 9 deletions
@@ -1,5 +1,5 @@ #! /bin/sh -# From configure.ac 515eed8ee. +# From configure.ac 234189f34. # Guess values for system-dependent variables and create Makefiles. # Generated by GNU Autoconf 2.69. # @@ -4776,7 +4776,50 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu # -Werror-implicit-function-declaration -Wtrampolines # -Wjump-misses-init -CFLAGS="$CFLAGS -pipe -ffast-math -Wall -Wextra -Wno-sign-compare -std=c99" +{ $as_echo "$as_me:${as_lineno-$LINENO}: checking whether $CC supports -std=c11" >&5 +$as_echo_n "checking whether $CC supports -std=c11... " >&6; } +OLD_CFLAGS="$CFLAGS" +CFLAGS="$CFLAGS -std=c11" +cat confdefs.h - <<_ACEOF >conftest.$ac_ext +/* end confdefs.h. */ +int foo; +_ACEOF +if ac_fn_c_try_compile "$LINENO"; then : + + { $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5 +$as_echo "yes" >&6; } + +else + + { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5 +$as_echo "no" >&6; } + + { $as_echo "$as_me:${as_lineno-$LINENO}: checking whether $CC supports -std=c1x" >&5 +$as_echo_n "checking whether $CC supports -std=c1x... " >&6; } + CFLAGS="$OLD_CFLAGS -std=c1x" + cat confdefs.h - <<_ACEOF >conftest.$ac_ext +/* end confdefs.h. */ +int foo; +_ACEOF +if ac_fn_c_try_compile "$LINENO"; then : + + { $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5 +$as_echo "yes" >&6; } + +else + + { $as_echo "$as_me:${as_lineno-$LINENO}: result: no, falling back to -std=c99" >&5 +$as_echo "no, falling back to -std=c99" >&6; } + CFLAGS="$OLD_CFLAGS -std=c99" + + +fi +rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext + +fi +rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext + +CFLAGS="$CFLAGS -pipe -ffast-math -Wall -Wextra -Wno-sign-compare" CPPFLAGS="$CPPFLAGS -I../common" LDFLAGS="$LDFLAGS" diff --git a/configure.ac b/configure.ac index 1bb30b09f..4d5f4bcfd 100644 --- a/configure.ac +++ b/configure.ac @@ -638,7 +638,37 @@ AC_LANG([C]) # -Werror-implicit-function-declaration -Wtrampolines # -Wjump-misses-init -CFLAGS="$CFLAGS -pipe -ffast-math -Wall -Wextra -Wno-sign-compare -std=c99" +AC_MSG_CHECKING([whether $CC supports -std=c11]) +OLD_CFLAGS="$CFLAGS" +CFLAGS="$CFLAGS -std=c11" +AC_COMPILE_IFELSE( + [AC_LANG_SOURCE([int foo;])], + [ + AC_MSG_RESULT([yes]) + ], + [ + AC_MSG_RESULT([no]) + + AC_MSG_CHECKING([whether $CC supports -std=c1x]) + CFLAGS="$OLD_CFLAGS -std=c1x" + AC_COMPILE_IFELSE( + [AC_LANG_SOURCE([int foo;])], + [ + AC_MSG_RESULT([yes]) + ], + [ + AC_MSG_RESULT([no, falling back to -std=c99]) + CFLAGS="$OLD_CFLAGS -std=c99" + ] + ) + ], + [ + AC_MSG_RESULT([guessing no]) + CFLAGS="$OLD_CFLAGS -std=c99" + ] +) + +CFLAGS="$CFLAGS -pipe -ffast-math -Wall -Wextra -Wno-sign-compare" CPPFLAGS="$CPPFLAGS -I../common" LDFLAGS="$LDFLAGS" diff --git a/src/common/cbasetypes.h b/src/common/cbasetypes.h index 3fc41bb23..89f7f8588 100644 --- a/src/common/cbasetypes.h +++ b/src/common/cbasetypes.h @@ -460,12 +460,6 @@ typedef char bool; #if defined(__STDC_VERSION__) && __STDC_VERSION__ >= 201112L // C11 version #define STATIC_ASSERT(ex, msg) _Static_assert(ex, msg) -#elif __has_feature(c_static_assert) -// Clang support (as per http://clang.llvm.org/docs/LanguageExtensions.html) -#define STATIC_ASSERT(ex, msg) _Static_assert(ex, msg) -#elif defined(__GNUC__) && GCC_VERSION >= 40700 -// GCC >= 4.7 is known to support it -#define STATIC_ASSERT(ex, msg) _Static_assert(ex, msg) #elif defined(_MSC_VER) // MSVC doesn't support it, but it accepts the C++ style version #define STATIC_ASSERT(ex, msg) static_assert(ex, msg) |