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| author | fanquake <fanquake@gmail.com> | 2020-07-14 20:37:21 +0800 |
|---|---|---|
| committer | fanquake <fanquake@gmail.com> | 2021-02-12 09:04:16 +0800 |
| commit | 7cd0a696643a824ab6f6911278f116f01c5af662 (patch) | |
| tree | 9a2087515fbfaad171adc0c8187db35e69c26d41 | |
| parent | 1624e17b5430dfe808bb3b1b79dfa53bf45aa053 (diff) | |
| download | bitcoin-7cd0a696643a824ab6f6911278f116f01c5af662.tar.xz | |
build: test for __declspec(dllexport) in configure
This should work for GCC and Clang when building for Windows targets.
| -rw-r--r-- | configure.ac | 13 | ||||
| -rw-r--r-- | src/script/bitcoinconsensus.h | 10 |
2 files changed, 16 insertions, 7 deletions
diff --git a/configure.ac b/configure.ac index b80bde81d4..3ed27b0752 100644 --- a/configure.ac +++ b/configure.ac @@ -813,7 +813,6 @@ if test x$ac_cv_sys_large_files != x && CPPFLAGS="$CPPFLAGS -D_LARGE_FILES=$ac_cv_sys_large_files" fi -AX_GCC_FUNC_ATTRIBUTE([dllexport]) AX_GCC_FUNC_ATTRIBUTE([dllimport]) if test x$use_glibc_compat != xno; then @@ -1000,6 +999,18 @@ AC_COMPILE_IFELSE([AC_LANG_SOURCE([ ] ) +AC_MSG_CHECKING([for dllexport attribute]) +AC_COMPILE_IFELSE([AC_LANG_SOURCE([ + __declspec(dllexport) int foo(void); + int main(){} + ])], + [ + AC_DEFINE(HAVE_DLLEXPORT_ATTRIBUTE,1,[Define if the dllexport attribute is supported.]) + AC_MSG_RESULT(yes) + ], + [AC_MSG_RESULT(no)] +) + dnl thread_local is currently disabled when building with glibc back compat. dnl Our minimum supported glibc is 2.17, however support for thread_local dnl did not arrive in glibc until 2.18. diff --git a/src/script/bitcoinconsensus.h b/src/script/bitcoinconsensus.h index 9c966e7c1d..b6939127e1 100644 --- a/src/script/bitcoinconsensus.h +++ b/src/script/bitcoinconsensus.h @@ -11,12 +11,10 @@ #if defined(BUILD_BITCOIN_INTERNAL) && defined(HAVE_CONFIG_H) #include <config/bitcoin-config.h> #if defined(_WIN32) - #if defined(DLL_EXPORT) - #if defined(HAVE_FUNC_ATTRIBUTE_DLLEXPORT) - #define EXPORT_SYMBOL __declspec(dllexport) - #else - #define EXPORT_SYMBOL - #endif + #if defined(HAVE_DLLEXPORT_ATTRIBUTE) + #define EXPORT_SYMBOL __declspec(dllexport) + #else + #define EXPORT_SYMBOL #endif #elif defined(HAVE_DEFAULT_VISIBILITY_ATTRIBUTE) #define EXPORT_SYMBOL __attribute__ ((visibility ("default"))) |