Full gnulib stddef.h header file requested by Werner available here: https://gist.github.com/chrissimpkins/6e76999d84ca6ff36cf8f7ef047997f4
max_align_t definition from `cat /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/lib/clang/6.1.0/include/stddef.h` on Travis OS X 10.10 builds: #if __STDC_VERSION__ >= 201112L || __cplusplus >= 201103L #if !defined(__CLANG_MAX_ALIGN_T_DEFINED) || __has_feature(modules) #if defined(_MSC_VER) typedef double max_align_t; #elif defined(__APPLE__) typedef long double max_align_t; #else // Define 'max_align_t' to match the GCC definition. typedef struct { long long __clang_max_align_nonce1 __attribute__((__aligned__(__alignof__(long long)))); long double __clang_max_align_nonce2 __attribute__((__aligned__(__alignof__(long double)))); } max_align_t; #endif On Aug 30, 2017, 3:45 AM -0400, Bruno Haible <br...@clisp.org>, wrote: > Werner LEMBERG wrote: > > Shall I simply add > > > > AC_LANG_PUSH([C++]) > > > > right before the call to > > > > gl_INIT > > > > in my `configure.ac' file? > > It's worth a try, yes. If it creates other problems, we can look into these. > > Bruno >