From c28d3c668776e06b05d67ff37817ef987f798e5a Mon Sep 17 00:00:00 2001
From: Justin Turner Arthur <justinarthur@gmail.com>
Date: Tue, 16 Dec 2025 05:25:50 -0600
Subject: [PATCH 1/3] Make BestSourceException and derivatives visible to
 linked modules.

Fixes vapoursynth/bestsource#114.
---
 meson.build    |  2 ++
 src/bsshared.h | 24 ++++++++++++++++++++++--
 2 files changed, 24 insertions(+), 2 deletions(-)

diff --git a/meson.build b/meson.build
index 3bbe6c2..46c4006 100644
--- a/meson.build
+++ b/meson.build
@@ -27,6 +27,7 @@ plugin_sources = files(
 )
 
 libs = []
+api_args = ['-DBSSHARED_API_BUILDING']
 p2p_args = []
 
 if host_machine.cpu_family().startswith('x86')
@@ -71,6 +72,7 @@ endif
 libbestsource = library('libbestsource', api_sources,
     dependencies: deps,
     install: true,
+    cpp_args: api_args,
     link_args: link_args,
     link_with: libs,
     name_prefix: '',
diff --git a/src/bsshared.h b/src/bsshared.h
index 0959268..bc4be3c 100644
--- a/src/bsshared.h
+++ b/src/bsshared.h
@@ -28,13 +28,33 @@
 #include <functional>
 #include <filesystem>
 
+#if (defined(_WIN32) || defined(__CYGWIN__))
+#  define BSSHARED_API_EXPORT __declspec(dllexport)
+#  define BSSHARED_API_IMPORT __declspec(dllimport)
+#elif defined(__OS2__)
+#  define BSSHARED_API_EXPORT __declspec(dllexport)
+#  define BSSHARED_API_IMPORT
+#elif __GNUC__ >= 4
+#  define BSSHARED_API_EXPORT __attribute__((visibility("default")))
+#  define BSSHARED_API_IMPORT __attribute__((visibility("default")))
+#else
+#  define BSSHARED_API_EXPORT
+#  define BSSHARED_API_IMPORT
+#endif
+
+#ifdef BSSHARED_API_BUILDING
+#  define BSSHARED_API BSSHARED_API_EXPORT
+#else
+#  define BSSHARED_API BSSHARED_API_IMPORT
+#endif
+
 constexpr size_t HashSize = 8;
 
-class BestSourceException : public std::runtime_error {
+class BSSHARED_API BestSourceException : public std::runtime_error {
     using std::runtime_error::runtime_error;
 };
 
-class BestSourceHWDecoderException : public BestSourceException {
+class BSSHARED_API BestSourceHWDecoderException : public BestSourceException {
     using BestSourceException::BestSourceException;
 };
 

From c374e5728402adc3129b45019c72f7dd4310820c Mon Sep 17 00:00:00 2001
From: Justin Turner Arthur <justinarthur@gmail.com>
Date: Wed, 17 Dec 2025 00:48:22 -0600
Subject: [PATCH 2/3] Hide exception symbols in a static build.

---
 meson.build | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/meson.build b/meson.build
index 46c4006..ef6d443 100644
--- a/meson.build
+++ b/meson.build
@@ -27,7 +27,7 @@ plugin_sources = files(
 )
 
 libs = []
-api_args = ['-DBSSHARED_API_BUILDING']
+api_args = []
 p2p_args = []
 
 if host_machine.cpu_family().startswith('x86')
@@ -69,6 +69,10 @@ if meson.get_compiler('cpp').get_linker_id() in ['ld.bfd', 'ld.gold', 'ld.mold']
     link_args += ['-Wl,-Bsymbolic']
 endif
 
+if get_option('default_library') != 'static'
+    api_args += ['-DBSSHARED_API_BUILDING']
+endif
+
 libbestsource = library('libbestsource', api_sources,
     dependencies: deps,
     install: true,

From 0937d52348766eba0f9e0adcee4000fd2bab54c6 Mon Sep 17 00:00:00 2001
From: Justin Turner Arthur <justinarthur@gmail.com>
Date: Wed, 17 Dec 2025 01:50:25 -0600
Subject: [PATCH 3/3] Avoid import/export of symbols altogether in Windows and
 OS2 static builds.

---
 meson.build    | 4 +++-
 src/bsshared.h | 4 ++--
 2 files changed, 5 insertions(+), 3 deletions(-)

diff --git a/meson.build b/meson.build
index ef6d443..04de5c3 100644
--- a/meson.build
+++ b/meson.build
@@ -69,7 +69,9 @@ if meson.get_compiler('cpp').get_linker_id() in ['ld.bfd', 'ld.gold', 'ld.mold']
     link_args += ['-Wl,-Bsymbolic']
 endif
 
-if get_option('default_library') != 'static'
+if get_option('default_library') == 'static'
+    api_args += ['-DBSSHARED_API_STATIC']
+else
     api_args += ['-DBSSHARED_API_BUILDING']
 endif
 
diff --git a/src/bsshared.h b/src/bsshared.h
index bc4be3c..b894f2a 100644
--- a/src/bsshared.h
+++ b/src/bsshared.h
@@ -28,10 +28,10 @@
 #include <functional>
 #include <filesystem>
 
-#if (defined(_WIN32) || defined(__CYGWIN__))
+#if (defined(_WIN32) || defined(__CYGWIN__)) && !defined(BSSHARED_API_STATIC)
 #  define BSSHARED_API_EXPORT __declspec(dllexport)
 #  define BSSHARED_API_IMPORT __declspec(dllimport)
-#elif defined(__OS2__)
+#elif defined(__OS2__) && !defined(BSSHARED_API_STATIC)
 #  define BSSHARED_API_EXPORT __declspec(dllexport)
 #  define BSSHARED_API_IMPORT
 #elif __GNUC__ >= 4