Hi, when specifying a non-system prefix with --with-zstd, the build fails because the header and library cannot be found (see https://gcc.gnu.org/bugzilla/show_bug.cgi?id=95005).
The attached patch fixes the problem and is what we use in Spack to make GCC build with zstd support. Best regards, Michael
--- a/gcc/Makefile.in +++ b/gcc/Makefile.in @@ -1075,7 +1075,8 @@ GNATMAKE = @GNATMAKE@ # Libs needed (at present) just for jcf-dump. LDEXP_LIB = @LDEXP_LIB@ -ZSTD_LIB = @ZSTD_LIB@ +ZSTD_INC = @ZSTD_CPPFLAGS@ +ZSTD_LIB = @ZSTD_LDFLAGS@ @ZSTD_LIB@ # Likewise, for use in the tools that must run on this machine # even if we are cross-building GCC. @@ -2275,7 +2276,7 @@ CFLAGS-version.o += -DBASEVER=$(BASEVER_s) -DDATESTAMP=$(DATESTAMP_s) \ version.o: $(REVISION) $(DATESTAMP) $(BASEVER) $(DEVPHASE) # lto-compress.o needs $(ZLIBINC) added to the include flags. -CFLAGS-lto-compress.o += $(ZLIBINC) +CFLAGS-lto-compress.o += $(ZLIBINC) $(ZSTD_INC) CFLAGS-lto-streamer-in.o += -DTARGET_MACHINE=\"$(target_noncanonical)\" --- a/gcc/configure +++ b/gcc/configure @@ -786,6 +786,8 @@ LTLIBICONV LIBICONV ZSTD_LIB ZSTD_INCLUDE +ZSTD_LDFLAGS +ZSTD_CPPFLAGS DL_LIB LDEXP_LIB EXTRA_GCC_LIBS --- a/gcc/configure.ac +++ b/gcc/configure.ac @@ -1339,6 +1339,8 @@ AC_SUBST(ZSTD_INCLUDE) AC_SUBST(ZSTD_LIB) ZSTD_CPPFLAGS= ZSTD_LDFLAGS= +AC_SUBST(ZSTD_CPPFLAGS) +AC_SUBST(ZSTD_LDFLAGS) AC_ARG_WITH(zstd, [AS_HELP_STRING([--with-zstd=PATH], [specify prefix directory for installed zstd library.
