Use sched_yield instead of pthread_yield on Linux

Should fix issue reported on IRC by Dumas_Walker

3rdp/build/GNUmakefile

@@ -88,7 +88,7 @@ $(CRYPT_SRC): | $(3RDPSRCDIR)
 $(CRYPT_IDIR): | $(3RDPODIR)
 	$(QUIET)$(IFNOTEXIST) mkdir $(CRYPT_IDIR)
 
-$(CRYPTLIB_BUILD): $(3RDP_ROOT)/dist/cryptlib.zip $(3RDP_ROOT)/build/terminal-params.patch $(3RDP_ROOT)/build/cl-mingw32-static.patch $(3RDP_ROOT)/build/cl-ranlib.patch $(3RDP_ROOT)/build/cl-win32-noasm.patch $(3RDP_ROOT)/build/cl-zz-country.patch $(3RDP_ROOT)/build/cl-algorithms.patch $(3RDP_ROOT)/build/cl-allow-duplicate-ext.patch $(3RDP_ROOT)/build/cl-macosx-minver.patch $(3RDP_ROOT)/build/cl-endian.patch $(3RDP_ROOT)/build/cl-cryptodev.patch $(3RDP_ROOT)/build/cl-posix-me-gently.patch $(3RDP_ROOT)/build/cl-tpm-linux.patch $(3RDP_ROOT)/build/cl-PAM-noprompts.patch $(3RDP_ROOT)/build/cl-zlib.patch $(3RDP_ROOT)/build/Dynamic-linked-static-lib.patch $(3RDP_ROOT)/build/SSL-fix.patch $(3RDP_ROOT)/build/cl-bigger-maxattribute.patch $(3RDP_ROOT)/build/cl-vcxproj.patch $(3RDP_ROOT)/build/cl-mingw-vcver.patch $(3RDP_ROOT)/build/cl-win32-build-fix.patch $(3RDP_ROOT)/build/cl-gcc-non-const-time-val.patch $(3RDP_ROOT)/build/cl-no-odbc.patch $(3RDP_ROOT)/build/cl-noasm-defines.patch $(3RDP_ROOT)/build/cl-bn-noasm64-fix.patch $(3RDP_ROOT)/build/cl-no-RSA-suites.patch $(3RDP_ROOT)/build/cl-fix-ECC-RSA.patch $(3RDP_ROOT)/build/cl-prefer-ECC.patch $(3RDP_ROOT)/build/cl-prefer-ECC-harder.patch $(3RDP_ROOT)/build/cl-more-RSA-ECC-fixes.patch $(3RDP_ROOT)/build/cl-DH-key-init.patch $(3RDP_ROOT)/build/cl-clear-GCM-flag.patch $(3RDP_ROOT)/build/cl-use-ssh-ctr.patch $(3RDP_ROOT)/build/cl-ssh-list-ctr-modes.patch $(3RDP_ROOT)/build/cl-ssh-incCtr.patch $(3RDP_ROOT)/build/cl-ssl-suite-blocksizes.patch $(3RDP_ROOT)/build/cl-no-tpm.patch $(3RDP_ROOT)/build/cl-no-via-aes.patch $(3RDP_ROOT)/build/cl-fix-ssh-ecc-ephemeral.patch $(3RDP_ROOT)/build/cl-just-use-cc.patch $(3RDP_ROOT)/build/cl-learn-numbers.patch $(3RDP_ROOT)/build/cl-no-safe-stack.patch $(3RDP_ROOT)/build/cl-allow-pkcs12.patch $(3RDP_ROOT)/build/cl-uint64_t-redefine.patch $(3RDP_ROOT)/build/cl-random-openbsd.patch $(3RDP_ROOT)/build/cl-openbsd-threads.patch $(3RDP_ROOT)/build/cl-allow-none-auth.patch $(3RDP_ROOT)/build/cl-mingw-add-m32.patch $(3RDP_ROOT)/build/cl-poll-not-select.patch $(3RDP_ROOT)/build/cl-check-before-use.patch $(3RDP_ROOT)/build/cl-linux-yield.patch $(3RDP_ROOT)/build/cl-good-sockets.patch $(3RDP_ROOT)/build/cl-moar-objects.patch | $(CRYPT_SRC) $(CRYPT_IDIR) $(3RDP_ROOT)/build/cl-remove-march.patch
+$(CRYPTLIB_BUILD): $(3RDP_ROOT)/dist/cryptlib.zip $(3RDP_ROOT)/build/terminal-params.patch $(3RDP_ROOT)/build/cl-mingw32-static.patch $(3RDP_ROOT)/build/cl-ranlib.patch $(3RDP_ROOT)/build/cl-win32-noasm.patch $(3RDP_ROOT)/build/cl-zz-country.patch $(3RDP_ROOT)/build/cl-algorithms.patch $(3RDP_ROOT)/build/cl-allow-duplicate-ext.patch $(3RDP_ROOT)/build/cl-macosx-minver.patch $(3RDP_ROOT)/build/cl-endian.patch $(3RDP_ROOT)/build/cl-cryptodev.patch $(3RDP_ROOT)/build/cl-posix-me-gently.patch $(3RDP_ROOT)/build/cl-tpm-linux.patch $(3RDP_ROOT)/build/cl-PAM-noprompts.patch $(3RDP_ROOT)/build/cl-zlib.patch $(3RDP_ROOT)/build/Dynamic-linked-static-lib.patch $(3RDP_ROOT)/build/SSL-fix.patch $(3RDP_ROOT)/build/cl-bigger-maxattribute.patch $(3RDP_ROOT)/build/cl-vcxproj.patch $(3RDP_ROOT)/build/cl-mingw-vcver.patch $(3RDP_ROOT)/build/cl-win32-build-fix.patch $(3RDP_ROOT)/build/cl-gcc-non-const-time-val.patch $(3RDP_ROOT)/build/cl-no-odbc.patch $(3RDP_ROOT)/build/cl-noasm-defines.patch $(3RDP_ROOT)/build/cl-bn-noasm64-fix.patch $(3RDP_ROOT)/build/cl-no-RSA-suites.patch $(3RDP_ROOT)/build/cl-fix-ECC-RSA.patch $(3RDP_ROOT)/build/cl-prefer-ECC.patch $(3RDP_ROOT)/build/cl-prefer-ECC-harder.patch $(3RDP_ROOT)/build/cl-more-RSA-ECC-fixes.patch $(3RDP_ROOT)/build/cl-DH-key-init.patch $(3RDP_ROOT)/build/cl-clear-GCM-flag.patch $(3RDP_ROOT)/build/cl-use-ssh-ctr.patch $(3RDP_ROOT)/build/cl-ssh-list-ctr-modes.patch $(3RDP_ROOT)/build/cl-ssh-incCtr.patch $(3RDP_ROOT)/build/cl-ssl-suite-blocksizes.patch $(3RDP_ROOT)/build/cl-no-tpm.patch $(3RDP_ROOT)/build/cl-no-via-aes.patch $(3RDP_ROOT)/build/cl-fix-ssh-ecc-ephemeral.patch $(3RDP_ROOT)/build/cl-just-use-cc.patch $(3RDP_ROOT)/build/cl-learn-numbers.patch $(3RDP_ROOT)/build/cl-no-safe-stack.patch $(3RDP_ROOT)/build/cl-allow-pkcs12.patch $(3RDP_ROOT)/build/cl-uint64_t-redefine.patch $(3RDP_ROOT)/build/cl-random-openbsd.patch $(3RDP_ROOT)/build/cl-openbsd-threads.patch $(3RDP_ROOT)/build/cl-allow-none-auth.patch $(3RDP_ROOT)/build/cl-mingw-add-m32.patch $(3RDP_ROOT)/build/cl-poll-not-select.patch $(3RDP_ROOT)/build/cl-check-before-use.patch $(3RDP_ROOT)/build/cl-linux-yield.patch $(3RDP_ROOT)/build/cl-good-sockets.patch $(3RDP_ROOT)/build/cl-moar-objects.patch $(3RDP_ROOT)/build/cl-pthread_yield.patch | $(CRYPT_SRC) $(CRYPT_IDIR) $(3RDP_ROOT)/build/cl-remove-march.patch
 	@echo Creating $@ ...
 	$(QUIET)-rm -rf $(CRYPT_SRC)/*
 	$(QUIET)unzip -oa $(3RDPDISTDIR)/cryptlib.zip -d $(CRYPT_SRC)
@@ -146,6 +146,7 @@ $(CRYPTLIB_BUILD): $(3RDP_ROOT)/dist/cryptlib.zip $(3RDP_ROOT)/build/terminal-pa
 	$(QUIET)patch -b -p0 -d $(CRYPT_SRC) < cl-good-sockets.patch
 	$(QUIET)patch -b -p0 -d $(CRYPT_SRC) < cl-moar-objects.patch
 	$(QUIET)patch -b -p0 -d $(CRYPT_SRC) < cl-remove-march.patch
+	$(QUIET)patch -b -p0 -d $(CRYPT_SRC) < cl-pthread_yield.patch
 ifeq ($(os),win32)
 	$(QUIET)cd $(CRYPT_SRC) && env - PATH="$(PATH)" CC="$(CC)" AR="$(AR)" RANLIB="$(RANLIB)" make directories
 	$(QUIET)cd $(CRYPT_SRC) && env - PATH="$(PATH)" CC="$(CC)" AR="$(AR)" RANLIB="$(RANLIB)" make toolscripts

3rdp/build/cl-pthread_yield.patch

+--- kernel/thread.h.orig	2023-12-13 12:08:02.174014000 -0500
++++ kernel/thread.h	2023-12-13 12:08:24.634971000 -0500
+@@ -3013,10 +3013,7 @@
+ 	 underlying process context should yield the associated thread */
+   #define THREAD_YIELD()		yield()
+ #else
+-  #if defined( __linux__ ) && !defined( __USE_GNU )
+-	void pthread_yield( void );
+-  #endif /* Present but not prototyped unless GNU extensions are enabled */
+-  #define  THREAD_YIELD()		pthread_yield()
++  #define  THREAD_YIELD()		sched_yield()
+ #endif /* Not-very-portable Posix portability */
+ #define THREAD_SLEEP( ms )		{ \
+ 								struct timeval tv = { 0 }; \