Make sure we #define _POSIX_C_SOURCE.

[meshlink] / configure.ac

diff --git a/configure.ac b/configure.ac
index c5e629d66e17f476ad577c6b58d9b31854438b4d..364884999cdf12005f99f50872bd4c94b0603726 100644 (file)
--- a/configure.ac
+++ b/configure.ac
@@ -12,8 +12,9 @@ AM_SILENT_RULES([yes])
 # Enable GNU extensions.
 # Define this here, not in acconfig's @TOP@ section, since definitions
 # in the latter don't make it into the configure-time tests.
 # Enable GNU extensions.
 # Define this here, not in acconfig's @TOP@ section, since definitions
 # in the latter don't make it into the configure-time tests.

-AC_GNU_SOURCE
+AC_USE_SYSTEM_EXTENSIONS

 AC_DEFINE([__USE_BSD], 1, [Enable BSD extensions])
 AC_DEFINE([__USE_BSD], 1, [Enable BSD extensions])

+AC_DEFINE([_POSIX_C_SOURCE], 200809L, [Enable POSIX features])

 
 dnl Checks for programs.
 AM_PROG_CC_C_O
 
 dnl Checks for programs.
 AM_PROG_CC_C_O


@@ -54,6 +55,8 @@ if test -d /sw/lib ; then
   LIBS="$LIBS -L/sw/lib"
 fi
 
   LIBS="$LIBS -L/sw/lib"
 fi
 

+AX_CHECK_COMPILE_FLAG([-std=c11], [CFLAGS="$CFLAGS -std=c11"])
+

 dnl Compiler hardening flags
 dnl No -fstack-protector-all because it doesn't work on all platforms or architectures.
 
 dnl Compiler hardening flags
 dnl No -fstack-protector-all because it doesn't work on all platforms or architectures.
 


@@ -75,7 +78,7 @@ AS_IF([test "x$enable_hardening" != "xno"],
    esac
    AX_CHECK_LINK_FLAG([-Wl,-z,relro], [LDFLAGS="$LDFLAGS -Wl,-z,relro"])
    AX_CHECK_LINK_FLAG([-Wl,-z,now], [LDFLAGS="$LDFLAGS -Wl,-z,now"])
    esac
    AX_CHECK_LINK_FLAG([-Wl,-z,relro], [LDFLAGS="$LDFLAGS -Wl,-z,relro"])
    AX_CHECK_LINK_FLAG([-Wl,-z,now], [LDFLAGS="$LDFLAGS -Wl,-z,now"])

-   AX_CHECK_COMPILE_FLAG([-Wextra -pedantic -Wreturn-type -Wold-style-definition -Wmissing-declarations -Wmissing-prototypes -Wstrict-prototypes -Wredundant-decls -Wshadow -Wbad-function-cast -Wwrite-strings -fdiagnostics-show-option -fstrict-aliasing -Wmissing-noreturn], [CPPFLAGS="$CPPFLAGS -Wextra -pedantic -Wreturn-type -Wold-style-definition -Wmissing-declarations -Wmissing-prototypes -Wstrict-prototypes -Wredundant-decls -Wshadow -Wbad-function-cast -Wwrite-strings -fdiagnostics-show-option -fno-strict-aliasing -Wmissing-noreturn"])
+   AX_CHECK_COMPILE_FLAG([-Wextra -pedantic -Wreturn-type -Wold-style-definition -Wmissing-declarations -Wmissing-prototypes -Wstrict-prototypes -Wredundant-decls -Wshadow -Wbad-function-cast -Wwrite-strings -fdiagnostics-show-option -fstrict-aliasing -Wmissing-noreturn], [CPPFLAGS="$CPPFLAGS -Wextra -pedantic -Wreturn-type -Wold-style-definition -Wmissing-declarations -Wmissing-prototypes -Wstrict-prototypes -Wredundant-decls -Wshadow -Wbad-function-cast -Wwrite-strings -fdiagnostics-show-option -fstrict-aliasing -Wmissing-noreturn"])

   ]
 );
 
   ]
 );
 


@@ -121,7 +124,7 @@ AM_CONDITIONAL(INSTALL_TESTS, test "$install_tests" = true)
 dnl Checks for header files.
 dnl We do this in multiple stages, because unlike Linux all the other operating systems really suck and don't include their own dependencies.
 
 dnl Checks for header files.
 dnl We do this in multiple stages, because unlike Linux all the other operating systems really suck and don't include their own dependencies.
 

-AC_CHECK_HEADERS([syslog.h sys/file.h sys/param.h sys/resource.h sys/socket.h sys/time.h sys/un.h sys/wait.h netdb.h arpa/inet.h dirent.h curses.h ifaddrs.h])
+AC_CHECK_HEADERS([syslog.h sys/file.h sys/param.h sys/resource.h sys/socket.h sys/time.h sys/un.h sys/wait.h netdb.h arpa/inet.h dirent.h curses.h ifaddrs.h stdatomic.h])

 
 dnl Checks for typedefs, structures, and compiler characteristics.
 MeshLink_ATTRIBUTE(__malloc__)
 
 dnl Checks for typedefs, structures, and compiler characteristics.
 MeshLink_ATTRIBUTE(__malloc__)