build: Don't check for pthread.h

The Autotools build still checks for pthread.h (and zlib.h and lzma.h)
but the result isn't needed in config.h.

CMakeLists.txt

@@ -293,12 +293,6 @@ add_library(LibXml2::LibXml2 ALIAS LibXml2)
 
 target_compile_definitions(LibXml2 PRIVATE SYSCONFDIR="${CMAKE_INSTALL_FULL_SYSCONFDIR}")
 
-if(LIBXML2_WITH_THREADS)
-    if(NOT WIN32)
-        check_include_files(pthread.h HAVE_PTHREAD_H)
-    endif()
-endif()
-
 target_include_directories(
     LibXml2
     PUBLIC

config.h.cmake.in

@@ -21,9 +21,6 @@
 /* Define to 1 if you have the <poll.h> header file. */
 #cmakedefine HAVE_POLL_H 1
 
-/* Define to 1 if you have the <pthread.h> header file. */
-#cmakedefine HAVE_PTHREAD_H 1
-
 /* Have shl_load based dso */
 #cmakedefine HAVE_SHLLOAD 1
 

configure.ac

@@ -711,9 +711,7 @@ else
                     WITH_THREADS="1"
                     if test "$ac_cv_search_pthread_create" != "none required"; then
                         THREAD_LIBS=$ac_cv_search_pthread_create
-                    fi
-                    AC_DEFINE([HAVE_PTHREAD_H], [],
-                              [Define if <pthread.h> is there])]))
+                    fi]))
             LIBS=$_libs
             ;;
     esac

meson.build

@@ -310,7 +310,6 @@ endif
 ### threads
 if want_threads
     threads_dep = dependency('threads')
-    config_h.set10(sys_windows ? 'HAVE_WIN32_THREADS' : 'HAVE_PTHREAD_H', true)
     xml_deps += threads_dep
 else
     threads_dep = dependency('', required: false)

runtest.c

@@ -4420,7 +4420,7 @@ testThread(void)
     return (res);
 }
 
-#elif defined HAVE_PTHREAD_H
+#else
 #include <pthread.h>
 
 static pthread_t tid[MAX_ARGC];
@@ -4469,15 +4469,6 @@ testThread(void)
     }
     return (res);
 }
-
-#else
-static int
-testThread(void)
-{
-    fprintf(stderr,
-            "Specific platform thread support not detected\n");
-    return (-1);
-}
 #endif
 static int
 threadsTest(const char *filename ATTRIBUTE_UNUSED,

win32/Makefile.bcb

@@ -59,8 +59,6 @@ CFLAGS = $(CFLAGS) -tWR
 !endif
 !if "$(WITH_THREADS)" == "ctls"
 CFLAGS = $(CFLAGS) "-DXML_THREAD_LOCAL=__declspec(thread)"
-!else if "$(WITH_THREADS)" == "posix"
-CFLAGS = $(CFLAGS) -DHAVE_PTHREAD_H
 !endif
 
 # The linker and its options.

win32/Makefile.mingw

@@ -42,9 +42,6 @@ CFLAGS += -I$(XML_SRCDIR) -I$(XML_SRCDIR)/include -I$(INCPREFIX) $(INCLUDE)
 ifeq ($(WITH_THREADS),ctls)
 CFLAGS += "-DXML_THREAD_LOCAL=__declspec(thread)"
 endif
-ifeq ($(WITH_THREADS),posix)
-CFLAGS += -DHAVE_PTHREAD_H
-endif
 
 # The linker and its options.
 LD = gcc.exe

win32/Makefile.msvc

@@ -44,8 +44,6 @@ CFLAGS = /nologo /D "_WINDOWS" /D "_MBCS" /D "NOLIBTOOL" /W3 /wd4244 /wd4267 $(C
 CFLAGS = $(CFLAGS) /I$(XML_SRCDIR) /I$(XML_SRCDIR)\include /I$(INCPREFIX)
 !if "$(WITH_THREADS)" == "ctls"
 CFLAGS = $(CFLAGS) /D "XML_THREAD_LOCAL=__declspec(thread)"
-!else if "$(WITH_THREADS)" == "posix"
-CFLAGS = $(CFLAGS) /D "HAVE_PTHREAD_H"
 !endif
 CFLAGS = $(CFLAGS) /D_CRT_SECURE_NO_DEPRECATE /D_CRT_NONSTDC_NO_DEPRECATE