Re: clang prefix for centos7

Justin Pryzby wrote:
> I'm migating a postgres11 server to centos7.
> It turns out we need parray_gin extension.
> 
> Under centos6, it compiled and installed fine, but but under c7 it fails:
> 
> sudo pgxnclient install parray_gin
> > gcc -Wall -Wmissing-prototypes -Wpointer-arith -Wdeclaration-after-statement -Wendif-labels
-Wmissing-format-attribute-Wformat-security -fno-strict-aliasing -fwrapv -fexcess-precision=standard -O2 -g -pipe -Wall
-Wp,-D_FORTIFY_SOURCE=2-fexceptions -fstack-protector-strong --param=ssp-buffer-size=4 -grecord-gcc-switches -m64
-mtune=generic-fPIC -I. -I./ -I/usr/pgsql-11/include/server -I/usr/pgsql-11/include/internal  -D_GNU_SOURCE
-I/usr/include/libxml2 -I/usr/include  -c -o src/parray_gin.o src/parray_gin.c
 
> > gcc -Wall -Wmissing-prototypes -Wpointer-arith -Wdeclaration-after-statement -Wendif-labels
-Wmissing-format-attribute-Wformat-security -fno-strict-aliasing -fwrapv -fexcess-precision=standard -O2 -g -pipe -Wall
-Wp,-D_FORTIFY_SOURCE=2-fexceptions -fstack-protector-strong --param=ssp-buffer-size=4 -grecord-gcc-switches -m64
-mtune=generic-fPIC -I. -I./ -I/usr/pgsql-11/include/server -I/usr/pgsql-11/include/internal  -D_GNU_SOURCE
-I/usr/include/libxml2 -I/usr/include  -c -o src/trgm.o src/trgm.c
 
> > gcc -Wall -Wmissing-prototypes -Wpointer-arith -Wdeclaration-after-statement -Wendif-labels
-Wmissing-format-attribute-Wformat-security -fno-strict-aliasing -fwrapv -fexcess-precision=standard -O2 -g -pipe -Wall
-Wp,-D_FORTIFY_SOURCE=2-fexceptions -fstack-protector-strong --param=ssp-buffer-size=4 -grecord-gcc-switches -m64
-mtune=generic-fPIC -shared -o parray_gin.so src/parray_gin.o src/trgm.o -L/usr/pgsql-11/lib  -Wl,--as-needed
-L/usr/lib64/llvm5.0/lib -L/usr/lib64 -Wl,--as-needed -Wl,-rpath,'/usr/pgsql-11/lib',--enable-new-dtags  
 
> > cp sql/parray_gin.sql sql/parray_gin--1.3.1.sql
> > /opt/rh/llvm-toolset-7/root/usr/bin/clang -Wno-ignored-attributes -fno-strict-aliasing -fwrapv -O2  -I. -I./
-I/usr/pgsql-11/include/server-I/usr/pgsql-11/include/internal  -D_GNU_SOURCE -I/usr/include/libxml2  -I/usr/include
-flto=thin-emit-llvm -c -o src/parray_gin.bc src/parray_gin.c
 
> > gmake: /opt/rh/llvm-toolset-7/root/usr/bin/clang: Command not found
> > gmake: *** [src/parray_gin.bc] Error 127
> > ERROR: command returned 2: gmake PG_CONFIG=/bin/pg_config all

If you don't need JIT support for the extension, you could try

   with_llvm=no make -e

That worked with oracle_fdw.

Don't know how that translates to pgxnclient though.

Yours,
Laurenz Albe
-- 
Cybertec | https://www.cybertec-postgresql.com