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fix(cmake): declspecs usage for msvc (#5190)

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Ju1He1 2024-01-09 11:44:49 +01:00 committed by GitHub
parent 278d8cf2a2
commit 97aef2bfa5
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4 changed files with 17 additions and 8 deletions
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19
CMakeLists.txt
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@ -18,10 +18,19 @@ else()
include(${CMAKE_CURRENT_LIST_DIR}/env_support/cmake/custom.cmake)
endif()
#[[
unfortunately CMAKE_WINDOWS_EXPORT_ALL_SYMBOLS does not work for global data.
for global data we still need decl specs.
Check out the docs to learn more about the limitations of CMAKE_WINDOWS_EXPORT_ALL_SYMBOLS
https://cmake.org/cmake/help/latest/prop_tgt/WINDOWS_EXPORT_ALL_SYMBOLS.html#prop_tgt:WINDOWS_EXPORT_ALL_SYMBOLS
For all compiled sources within the library (i.e. basically all lvgl files) we need to use dllexport.
For all compiled sources from outside the library (i.e. files which include lvgl headers) we need to use dllimport.
We can do this by using CMakes INTERFACE and PRIVATE keyword.
]]
if (MSVC)
if (BUILD_SHARED_LIBS)
target_compile_definitions(lvgl PUBLIC LV_ATTRIBUTE_EXTERN_DATA=__declspec\(dllimport\))
else()
target_compile_definitions(lvgl PUBLIC LV_ATTRIBUTE_EXTERN_DATA=__declspec\(dllexport\))
endif()
target_compile_definitions(lvgl
INTERFACE LV_ATTRIBUTE_EXTERN_DATA=__declspec\(dllimport\)
PRIVATE LV_ATTRIBUTE_EXTERN_DATA=__declspec\(dllexport\)
)
endif()

2
src/core/lv_global.h
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@ -205,7 +205,7 @@ typedef struct _lv_global_t {
#endif
#define LV_GLOBAL_DEFAULT() LV_GLOBAL_CUSTOM()
#else
extern lv_global_t lv_global;
LV_ATTRIBUTE_EXTERN_DATA extern lv_global_t lv_global;
#define LV_GLOBAL_DEFAULT() (&lv_global)
#endif

2
src/font/lv_font.h
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@ -162,7 +162,7 @@ void lv_font_set_kerning(lv_font_t * font, lv_font_kerning_t kerning);
* MACROS
**********************/
#define LV_FONT_DECLARE(font_name) extern const lv_font_t font_name;
#define LV_FONT_DECLARE(font_name) LV_ATTRIBUTE_EXTERN_DATA extern const lv_font_t font_name;
#if LV_FONT_MONTSERRAT_8
LV_FONT_DECLARE(lv_font_montserrat_8)

2
src/misc/lv_color.h
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@ -445,7 +445,7 @@ static inline void lv_color16_premultiply(lv_color16_t * c, lv_opa_t a)
#include "lv_palette.h"
#include "lv_color_op.h"
extern const lv_color_filter_dsc_t lv_color_filter_shade;
LV_ATTRIBUTE_EXTERN_DATA extern const lv_color_filter_dsc_t lv_color_filter_shade;
#ifdef __cplusplus
} /*extern "C"*/