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meson/test cases/common/150 recursive linking/lib.h

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Don't add dependencies recursively while linking We were doing this on the basis of an old comment, but there was no test for it and I couldn't reproduce the issue with clang on Linux at all. Let's add a (somewhat comprehensive) test and see if it breaks anywhere if we stop doing this. Halves the size of gstreamer's build.ninja from 20M to 8.7M Closes https://github.com/mesonbuild/meson/issues/1057
8 years ago
#if defined _WIN32
ninja: De-dup libraries and use --start/end-group Now we aggressively de-dup the list of libraries used while linking, and when linking with GNU ld we have to enclose all static libraries with -Wl,--start-group and -Wl,--end-group to force the linker to resolve all symbols recursively. This is needed when static libraries have circular deps on each other (see included test). The --start/end-group change is also needed for circular dependencies between static libraries because we no longer recursively list out all library dependencies. The size of build.ninja for GStreamer is now down to 6.1M from 20M, and yields a net reduction in configuration time of 10%
8 years ago
#ifdef MESON_STATIC_BUILD
#define SYMBOL_EXPORT
#define SYMBOL_IMPORT
#else
#define SYMBOL_IMPORT __declspec(dllimport)
#define SYMBOL_EXPORT __declspec(dllexport)
#endif
Don't add dependencies recursively while linking We were doing this on the basis of an old comment, but there was no test for it and I couldn't reproduce the issue with clang on Linux at all. Let's add a (somewhat comprehensive) test and see if it breaks anywhere if we stop doing this. Halves the size of gstreamer's build.ninja from 20M to 8.7M Closes https://github.com/mesonbuild/meson/issues/1057
8 years ago
#else
#define SYMBOL_IMPORT
#if defined __GNUC__
#define SYMBOL_EXPORT __attribute__ ((visibility("default")))
#else
#pragma message ("Compiler does not support symbol visibility.")
#define SYMBOL_EXPORT
#endif
#endif