configure.ac: Refine compile time checks for headers and functions

This removes checks for <string.h> and strpbrk as they are used unconditionally and unlikely to be absent on any supported platforms. This also makes it error out when <dlfcn.h> is not found. Signed-off-by: Daiki Ueno <[email protected]>
latchset · Nov 6, 2023 · 7d89b44 · 7d89b44
1 parent 2e8c26b
commit 7d89b44
Showing 1 changed file with 1 addition and 4 deletions.
diff --git a/configure.ac b/configure.ac
@@ -146,17 +146,14 @@ if test "$P11_MODULE_PATH" != "" ; then
 fi
 
 # Checks for header files.
-AC_CHECK_HEADERS([string.h dlfcn.h])
+AC_CHECK_HEADERS([dlfcn.h], , [AC_MSG_ERROR([<dlfcn.h> is not found])])
 
 # Checks for typedefs, structures, and compiler characteristics.
 AC_CHECK_HEADER_STDBOOL
 AC_C_BIGENDIAN
 AC_C_INLINE
 AC_TYPE_SIZE_T
 
-# Checks for library functions.
-AC_CHECK_FUNCS([strpbrk])
-
 AC_CONFIG_FILES([
 	Makefile
 	docs/Makefile