diff options
Diffstat (limited to 'print')
| -rw-r--r-- | print/buildfile | 17 | ||||
| -rw-r--r-- | print/export | 36 | ||||
| -rw-r--r-- | print/print | 4 |
3 files changed, 54 insertions, 3 deletions
diff --git a/print/buildfile b/print/buildfile index 20a7d60..7f5c4bb 100644 --- a/print/buildfile +++ b/print/buildfile @@ -1,8 +1,21 @@ -lib{print}: {hxx cxx}{print} +lib{print}: {hxx cxx}{print} hxx{export} + +# For pre-releases use the complete version to make sure they cannot be used +# in place of another pre-release or the final version. +# +if $abi_prerelease + lib{print}: bin.lib.version = @-$version +else + lib{print}: bin.lib.version = @-$abi_major.$abi_minor cxx.poptions += -I$src_root +obja{*}: cxx.poptions += -DLIBPRINT_STATIC_BUILD +objs{*}: cxx.poptions += -DLIBPRINT_SHARED_BUILD + lib{print}: cxx.export.poptions = -I$src_root +liba{print}: cxx.export.poptions += -DLIBPRINT_STATIC +libs{print}: cxx.export.poptions += -DLIBPRINT_SHARED # Install into the print/ subdirectory of, say, /usr/include/. # -install.include = $install.include/print +install.include = $install.include/print/ diff --git a/print/export b/print/export new file mode 100644 index 0000000..c96ae14 --- /dev/null +++ b/print/export @@ -0,0 +1,36 @@ +// file: print/export -*- C++ -*- + +#pragma once + +// Normally we don't export class templates (but do complete specializations), +// inline functions, and classes with only inline member functions. Exporting +// classes that inherit from non-exported/imported bases (e.g., std::string) +// will end up badly. The only known workarounds are to not inherit or to not +// export. Also, MinGW GCC doesn't like seeing non-exported function being +// used before their inline definition. The workaround is to reorder code. In +// the end it's all trial and error. + +#if defined(LIBPRINT_STATIC) // Using static. +# define LIBPRINT_EXPORT +#elif defined(LIBPRINT_STATIC_BUILD) // Building static. +# define LIBPRINT_EXPORT +#elif defined(LIBPRINT_SHARED) // Using shared. +# ifdef _WIN32 +# define LIBPRINT_EXPORT __declspec(dllimport) +# else +# define LIBPRINT_EXPORT +# endif +#elif defined(LIBPRINT_SHARED_BUILD) // Building shared. +# ifdef _WIN32 +# define LIBPRINT_EXPORT __declspec(dllexport) +# else +# define LIBPRINT_EXPORT +# endif +#else +// If none of the above macros are defined, then we assume we are being used +// by some third-party build system that cannot/doesn't signal the library +// type. Note that this fallback works for both static and shared but in case +// of shared will be sub-optimal compared to having dllimport. +// +# define LIBPRINT_EXPORT // Using static or shared. +#endif diff --git a/print/print b/print/print index 8943b6e..dc6a1a0 100644 --- a/print/print +++ b/print/print @@ -4,5 +4,7 @@ #include <string> -void +#include <print/export> + +LIBPRINT_EXPORT void print (const std::string& hello); |