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configure: improved testing for supported function attributes

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This commit is contained in:
Evgeny Grin (Karlson2k)
2024-06-21 14:31:37 +02:00
parent cbf3805feb
commit ab9bf849de
1 changed files with 12 additions and 2 deletions
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configure.ac
+12 -2
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@@ -3810,6 +3810,8 @@ test_func(void);
extern __attribute__((used)) int
test_func(void) {return 0;}
int main(void) {return test_func();}
]])
],
[mhd_cv_cc_attr_used="yes"],[mhd_cv_cc_attr_used="no"]
@@ -3831,6 +3833,8 @@ test_func(const char *ptr);
extern __attribute__((pure)) int
test_func(const char *ptr) {return (0 == (*ptr));}
int main(void) {return test_func("");}
]])
],
[mhd_cv_cc_attr_pure="yes"],[mhd_cv_cc_attr_pure="no"]
@@ -3852,6 +3856,8 @@ test_func(int a);
extern __attribute__((const)) int
test_func(int a) {return a + 1;}
int main(void) {return test_func(-1);}
]])
],
[mhd_cv_cc_attr_const="yes"],[mhd_cv_cc_attr_const="no"]
@@ -3873,6 +3879,8 @@ test_extrn_func(void);
extern __attribute__((visibility("default"))) int
test_extrn_func(void) {return 0;}
int main(void) {return test_extrn_func();}
]])
],
[mhd_cv_cc_attr_visibility_default="yes"],[mhd_cv_cc_attr_visibility_default="no"]
@@ -3889,10 +3897,12 @@ AS_VAR_IF([mhd_cv_cc_attr_visibility_default],["yes"],
[
AC_COMPILE_IFELSE([AC_LANG_SOURCE([[
__attribute__((visibility("internal"))) int
test_extrn_func(void);
test_intern_func(void);
__attribute__((visibility("internal"))) int
test_extrn_func(void) {return 0;}
test_intern_func(void) {return 0;}
int main(void) {return test_intern_func();}
]])
],
[mhd_cv_cc_attr_visibility_internal="yes"],[mhd_cv_cc_attr_visibility_internal="no"]