fix to allow compilation on mac os x

[deem0n]

without this fix I see the following error:

 gcc -Wall -Wmissing-prototypes -Wpointer-arith -Wdeclaration-after-statement -Wendif-labels -Wmissing-format-attribute -Wformat-security -fno-strict-aliasing -fwrapv -Wno-unused-command-line-argument  -mmacosx-version-min=10.12  -I.//src/include -I. -I./ -I/Applications/Postgres.app/Contents/Versions/11/include/postgresql/server -I/Applications/Postgres.app/Contents/Versions/11/include/postgresql/internal -I/Applications/Postgres.app/Contents/Versions/11/share/icu -I/Applications/Postgres.app/Contents/Versions/11/include/libxml2  -I/Applications/Postgres.app/Contents/Versions/11/include  -c -o src/backend/parser/cypher_parser.o src/backend/parser/cypher_parser.c
 src/backend/parser/cypher_parser.c:133:16: error: implicit declaration of function 'cypher_yyparse' is invalid in C99
       [-Werror,-Wimplicit-function-declaration]
     yyresult = cypher_yyparse(scanner, &extra);
                ^
 src/backend/parser/cypher_parser.c:133:16: note: did you mean 'cypher_yyerror'?
 src/backend/parser/cypher_parser.c:115:6: note: 'cypher_yyerror' declared here
 void cypher_yyerror(YYLTYPE *llocp, ag_scanner_t scanner,

my pg_config is:

BINDIR = /Applications/Postgres.app/Contents/Versions/11/bin
DOCDIR = /Applications/Postgres.app/Contents/Versions/11/share/doc/postgresql
HTMLDIR = /Applications/Postgres.app/Contents/Versions/11/share/doc/postgresql
INCLUDEDIR = /Applications/Postgres.app/Contents/Versions/11/include
PKGINCLUDEDIR = /Applications/Postgres.app/Contents/Versions/11/include/postgresql
INCLUDEDIR-SERVER = /Applications/Postgres.app/Contents/Versions/11/include/postgresql/server
LIBDIR = /Applications/Postgres.app/Contents/Versions/11/lib
PKGLIBDIR = /Applications/Postgres.app/Contents/Versions/11/lib/postgresql
LOCALEDIR = /Applications/Postgres.app/Contents/Versions/11/share/locale
MANDIR = /Applications/Postgres.app/Contents/Versions/11/share/man
SHAREDIR = /Applications/Postgres.app/Contents/Versions/11/share/postgresql
SYSCONFDIR = /Applications/Postgres.app/Contents/Versions/11/etc/postgresql
PGXS = /Applications/Postgres.app/Contents/Versions/11/lib/postgresql/pgxs/src/makefiles/pgxs.mk
CONFIGURE = '--prefix=/Applications/Postgres.app/Contents/Versions/11' '--with-includes=/Applications/Postgres.app/Contents/Versions/11/include' '--with-libraries=/Applications/Postgres.app/Contents/Versions/11/lib' '--enable-thread-safety' '--with-openssl' '--with-gssapi' '--with-bonjour' '--with-libxml' '--with-libxslt' '--with-perl' '--with-tcl' '--with-python' '--with-readline' '--with-uuid=e2fs' '--with-icu' 'CFLAGS= -mmacosx-version-min=10.12' 'CXXFLAGS= -mmacosx-version-min=10.12 -mmacosx-version-min=10.12' 'PKG_CONFIG_LIBDIR=/Applications/Postgres.app/Contents/Versions/11/lib/pkgconfig' 'ICU_CFLAGS=-I/Applications/Postgres.app/Contents/Versions/11/share/icu' 'ICU_LIBS=-licui18n -licuuc'
CC = gcc
CPPFLAGS = -I/Applications/Postgres.app/Contents/Versions/11/share/icu -I/Applications/Postgres.app/Contents/Versions/11/include/libxml2 -I/Applications/Postgres.app/Contents/Versions/11/include
CFLAGS = -Wall -Wmissing-prototypes -Wpointer-arith -Wdeclaration-after-statement -Wendif-labels -Wmissing-format-attribute -Wformat-security -fno-strict-aliasing -fwrapv -Wno-unused-command-line-argument  -mmacosx-version-min=10.12
CFLAGS_SL =
LDFLAGS = -L/Applications/Postgres.app/Contents/Versions/11/lib -L/Applications/Postgres.app/Contents/Versions/11/lib -Wl,-dead_strip_dylibs
LDFLAGS_EX =
LDFLAGS_SL =
LIBS = -lpgcommon -lpgport -lxslt -lxml2 -lssl -lcrypto -lgssapi_krb5 -lz -lreadline -lm
VERSION = PostgreSQL 11.11

gcc version:

 gcc --version
Configured with: --prefix=/Applications/Xcode.app/Contents/Developer/usr --with-gxx-include-dir=/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX.sdk/usr/include/c++/4.2.1
Apple clang version 12.0.0 (clang-1200.0.32.29)
Target: x86_64-apple-darwin20.3.0
Thread model: posix
InstalledDir: /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin

[emotionbug]

This would not be the perfect solution.
because, cypher_gram.y generate cypher_gram_def.h, cypher_gram.c that defined cypher_yyparse function.

maybe, it is build order problem.
so, make src/backend/parser/cypher_gram.c command will be generate that files. after than, it can be buildable.
https://github.com/apache/incubator-age/blob/a389bbcf1979cb0c991441dad4faced81f7a2923/Makefile#L91

but, there is also a problem with the "cypher_gram.c" file that generated in my environment, which is looking for an invalid header location like behind.

// actual
#include "cypher_gram_def.h"

// except
#include "parser/cypher_gram_def.h

Summary

1. Bison build order problem.
2. invalid header location problem

Envoriment
Ubuntu 21.04
bison (GNU Bison) 3.7.5

[deem0n]

The log from the latest master shows the bison invocation

/usr/bin/bison --defines=.//src/include/parser/cypher_gram_def.h -o src/backend/parser/cypher_gram.c src/backend/parser/cypher_gram.y

Interesting enough, the file I changed (cyther_parser.c) is not generated by bison and is a part of the repo. So it seems like a correct patch.

the full log:

gcc -Wall -Wmissing-prototypes -Wpointer-arith -Wdeclaration-after-statement -Wendif-labels -Wmissing-format-attribute -Wformat-security -fno-strict-aliasing -fwrapv -Wno-unused-command-line-argument  -mmacosx-version-min=10.12  -I.//src/include -I. -I./ -I/Applications/Postgres.app/Contents/Versions/11/include/postgresql/server -I/Applications/Postgres.app/Contents/Versions/11/include/postgresql/internal -I/Applications/Postgres.app/Contents/Versions/11/share/icu -I/Applications/Postgres.app/Contents/Versions/11/include/libxml2  -I/Applications/Postgres.app/Contents/Versions/11/include  -c -o src/backend/age.o src/backend/age.c
gcc -Wall -Wmissing-prototypes -Wpointer-arith -Wdeclaration-after-statement -Wendif-labels -Wmissing-format-attribute -Wformat-security -fno-strict-aliasing -fwrapv -Wno-unused-command-line-argument  -mmacosx-version-min=10.12  -I.//src/include -I. -I./ -I/Applications/Postgres.app/Contents/Versions/11/include/postgresql/server -I/Applications/Postgres.app/Contents/Versions/11/include/postgresql/internal -I/Applications/Postgres.app/Contents/Versions/11/share/icu -I/Applications/Postgres.app/Contents/Versions/11/include/libxml2  -I/Applications/Postgres.app/Contents/Versions/11/include  -c -o src/backend/catalog/ag_catalog.o src/backend/catalog/ag_catalog.c
gcc -Wall -Wmissing-prototypes -Wpointer-arith -Wdeclaration-after-statement -Wendif-labels -Wmissing-format-attribute -Wformat-security -fno-strict-aliasing -fwrapv -Wno-unused-command-line-argument  -mmacosx-version-min=10.12  -I.//src/include -I. -I./ -I/Applications/Postgres.app/Contents/Versions/11/include/postgresql/server -I/Applications/Postgres.app/Contents/Versions/11/include/postgresql/internal -I/Applications/Postgres.app/Contents/Versions/11/share/icu -I/Applications/Postgres.app/Contents/Versions/11/include/libxml2  -I/Applications/Postgres.app/Contents/Versions/11/include  -c -o src/backend/catalog/ag_graph.o src/backend/catalog/ag_graph.c
gcc -Wall -Wmissing-prototypes -Wpointer-arith -Wdeclaration-after-statement -Wendif-labels -Wmissing-format-attribute -Wformat-security -fno-strict-aliasing -fwrapv -Wno-unused-command-line-argument  -mmacosx-version-min=10.12  -I.//src/include -I. -I./ -I/Applications/Postgres.app/Contents/Versions/11/include/postgresql/server -I/Applications/Postgres.app/Contents/Versions/11/include/postgresql/internal -I/Applications/Postgres.app/Contents/Versions/11/share/icu -I/Applications/Postgres.app/Contents/Versions/11/include/libxml2  -I/Applications/Postgres.app/Contents/Versions/11/include  -c -o src/backend/catalog/ag_label.o src/backend/catalog/ag_label.c
gcc -Wall -Wmissing-prototypes -Wpointer-arith -Wdeclaration-after-statement -Wendif-labels -Wmissing-format-attribute -Wformat-security -fno-strict-aliasing -fwrapv -Wno-unused-command-line-argument  -mmacosx-version-min=10.12  -I.//src/include -I. -I./ -I/Applications/Postgres.app/Contents/Versions/11/include/postgresql/server -I/Applications/Postgres.app/Contents/Versions/11/include/postgresql/internal -I/Applications/Postgres.app/Contents/Versions/11/share/icu -I/Applications/Postgres.app/Contents/Versions/11/include/libxml2  -I/Applications/Postgres.app/Contents/Versions/11/include  -c -o src/backend/catalog/ag_namespace.o src/backend/catalog/ag_namespace.c
gcc -Wall -Wmissing-prototypes -Wpointer-arith -Wdeclaration-after-statement -Wendif-labels -Wmissing-format-attribute -Wformat-security -fno-strict-aliasing -fwrapv -Wno-unused-command-line-argument  -mmacosx-version-min=10.12  -I.//src/include -I. -I./ -I/Applications/Postgres.app/Contents/Versions/11/include/postgresql/server -I/Applications/Postgres.app/Contents/Versions/11/include/postgresql/internal -I/Applications/Postgres.app/Contents/Versions/11/share/icu -I/Applications/Postgres.app/Contents/Versions/11/include/libxml2  -I/Applications/Postgres.app/Contents/Versions/11/include  -c -o src/backend/commands/graph_commands.o src/backend/commands/graph_commands.c
gcc -Wall -Wmissing-prototypes -Wpointer-arith -Wdeclaration-after-statement -Wendif-labels -Wmissing-format-attribute -Wformat-security -fno-strict-aliasing -fwrapv -Wno-unused-command-line-argument  -mmacosx-version-min=10.12  -I.//src/include -I. -I./ -I/Applications/Postgres.app/Contents/Versions/11/include/postgresql/server -I/Applications/Postgres.app/Contents/Versions/11/include/postgresql/internal -I/Applications/Postgres.app/Contents/Versions/11/share/icu -I/Applications/Postgres.app/Contents/Versions/11/include/libxml2  -I/Applications/Postgres.app/Contents/Versions/11/include  -c -o src/backend/commands/label_commands.o src/backend/commands/label_commands.c
gcc -Wall -Wmissing-prototypes -Wpointer-arith -Wdeclaration-after-statement -Wendif-labels -Wmissing-format-attribute -Wformat-security -fno-strict-aliasing -fwrapv -Wno-unused-command-line-argument  -mmacosx-version-min=10.12  -I.//src/include -I. -I./ -I/Applications/Postgres.app/Contents/Versions/11/include/postgresql/server -I/Applications/Postgres.app/Contents/Versions/11/include/postgresql/internal -I/Applications/Postgres.app/Contents/Versions/11/share/icu -I/Applications/Postgres.app/Contents/Versions/11/include/libxml2  -I/Applications/Postgres.app/Contents/Versions/11/include  -c -o src/backend/executor/cypher_create.o src/backend/executor/cypher_create.c
gcc -Wall -Wmissing-prototypes -Wpointer-arith -Wdeclaration-after-statement -Wendif-labels -Wmissing-format-attribute -Wformat-security -fno-strict-aliasing -fwrapv -Wno-unused-command-line-argument  -mmacosx-version-min=10.12  -I.//src/include -I. -I./ -I/Applications/Postgres.app/Contents/Versions/11/include/postgresql/server -I/Applications/Postgres.app/Contents/Versions/11/include/postgresql/internal -I/Applications/Postgres.app/Contents/Versions/11/share/icu -I/Applications/Postgres.app/Contents/Versions/11/include/libxml2  -I/Applications/Postgres.app/Contents/Versions/11/include  -c -o src/backend/executor/cypher_set.o src/backend/executor/cypher_set.c
src/backend/executor/cypher_set.c:118:42: warning: variable 'saved_resultRelInfo' is uninitialized when used within its own initialization
      [-Wuninitialized]
    ResultRelInfo *saved_resultRelInfo = saved_resultRelInfo;;
                   ~~~~~~~~~~~~~~~~~~~   ^~~~~~~~~~~~~~~~~~~
1 warning generated.
gcc -Wall -Wmissing-prototypes -Wpointer-arith -Wdeclaration-after-statement -Wendif-labels -Wmissing-format-attribute -Wformat-security -fno-strict-aliasing -fwrapv -Wno-unused-command-line-argument  -mmacosx-version-min=10.12  -I.//src/include -I. -I./ -I/Applications/Postgres.app/Contents/Versions/11/include/postgresql/server -I/Applications/Postgres.app/Contents/Versions/11/include/postgresql/internal -I/Applications/Postgres.app/Contents/Versions/11/share/icu -I/Applications/Postgres.app/Contents/Versions/11/include/libxml2  -I/Applications/Postgres.app/Contents/Versions/11/include  -c -o src/backend/executor/cypher_utils.o src/backend/executor/cypher_utils.c
gcc -Wall -Wmissing-prototypes -Wpointer-arith -Wdeclaration-after-statement -Wendif-labels -Wmissing-format-attribute -Wformat-security -fno-strict-aliasing -fwrapv -Wno-unused-command-line-argument  -mmacosx-version-min=10.12  -I.//src/include -I. -I./ -I/Applications/Postgres.app/Contents/Versions/11/include/postgresql/server -I/Applications/Postgres.app/Contents/Versions/11/include/postgresql/internal -I/Applications/Postgres.app/Contents/Versions/11/share/icu -I/Applications/Postgres.app/Contents/Versions/11/include/libxml2  -I/Applications/Postgres.app/Contents/Versions/11/include  -c -o src/backend/nodes/ag_nodes.o src/backend/nodes/ag_nodes.c
gcc -Wall -Wmissing-prototypes -Wpointer-arith -Wdeclaration-after-statement -Wendif-labels -Wmissing-format-attribute -Wformat-security -fno-strict-aliasing -fwrapv -Wno-unused-command-line-argument  -mmacosx-version-min=10.12  -I.//src/include -I. -I./ -I/Applications/Postgres.app/Contents/Versions/11/include/postgresql/server -I/Applications/Postgres.app/Contents/Versions/11/include/postgresql/internal -I/Applications/Postgres.app/Contents/Versions/11/share/icu -I/Applications/Postgres.app/Contents/Versions/11/include/libxml2  -I/Applications/Postgres.app/Contents/Versions/11/include  -c -o src/backend/nodes/cypher_copyfuncs.o src/backend/nodes/cypher_copyfuncs.c
gcc -Wall -Wmissing-prototypes -Wpointer-arith -Wdeclaration-after-statement -Wendif-labels -Wmissing-format-attribute -Wformat-security -fno-strict-aliasing -fwrapv -Wno-unused-command-line-argument  -mmacosx-version-min=10.12  -I.//src/include -I. -I./ -I/Applications/Postgres.app/Contents/Versions/11/include/postgresql/server -I/Applications/Postgres.app/Contents/Versions/11/include/postgresql/internal -I/Applications/Postgres.app/Contents/Versions/11/share/icu -I/Applications/Postgres.app/Contents/Versions/11/include/libxml2  -I/Applications/Postgres.app/Contents/Versions/11/include  -c -o src/backend/nodes/cypher_outfuncs.o src/backend/nodes/cypher_outfuncs.c
gcc -Wall -Wmissing-prototypes -Wpointer-arith -Wdeclaration-after-statement -Wendif-labels -Wmissing-format-attribute -Wformat-security -fno-strict-aliasing -fwrapv -Wno-unused-command-line-argument  -mmacosx-version-min=10.12  -I.//src/include -I. -I./ -I/Applications/Postgres.app/Contents/Versions/11/include/postgresql/server -I/Applications/Postgres.app/Contents/Versions/11/include/postgresql/internal -I/Applications/Postgres.app/Contents/Versions/11/share/icu -I/Applications/Postgres.app/Contents/Versions/11/include/libxml2  -I/Applications/Postgres.app/Contents/Versions/11/include  -c -o src/backend/nodes/cypher_readfuncs.o src/backend/nodes/cypher_readfuncs.c
gcc -Wall -Wmissing-prototypes -Wpointer-arith -Wdeclaration-after-statement -Wendif-labels -Wmissing-format-attribute -Wformat-security -fno-strict-aliasing -fwrapv -Wno-unused-command-line-argument  -mmacosx-version-min=10.12  -I.//src/include -I. -I./ -I/Applications/Postgres.app/Contents/Versions/11/include/postgresql/server -I/Applications/Postgres.app/Contents/Versions/11/include/postgresql/internal -I/Applications/Postgres.app/Contents/Versions/11/share/icu -I/Applications/Postgres.app/Contents/Versions/11/include/libxml2  -I/Applications/Postgres.app/Contents/Versions/11/include  -c -o src/backend/optimizer/cypher_createplan.o src/backend/optimizer/cypher_createplan.c
gcc -Wall -Wmissing-prototypes -Wpointer-arith -Wdeclaration-after-statement -Wendif-labels -Wmissing-format-attribute -Wformat-security -fno-strict-aliasing -fwrapv -Wno-unused-command-line-argument  -mmacosx-version-min=10.12  -I.//src/include -I. -I./ -I/Applications/Postgres.app/Contents/Versions/11/include/postgresql/server -I/Applications/Postgres.app/Contents/Versions/11/include/postgresql/internal -I/Applications/Postgres.app/Contents/Versions/11/share/icu -I/Applications/Postgres.app/Contents/Versions/11/include/libxml2  -I/Applications/Postgres.app/Contents/Versions/11/include  -c -o src/backend/optimizer/cypher_pathnode.o src/backend/optimizer/cypher_pathnode.c
gcc -Wall -Wmissing-prototypes -Wpointer-arith -Wdeclaration-after-statement -Wendif-labels -Wmissing-format-attribute -Wformat-security -fno-strict-aliasing -fwrapv -Wno-unused-command-line-argument  -mmacosx-version-min=10.12  -I.//src/include -I. -I./ -I/Applications/Postgres.app/Contents/Versions/11/include/postgresql/server -I/Applications/Postgres.app/Contents/Versions/11/include/postgresql/internal -I/Applications/Postgres.app/Contents/Versions/11/share/icu -I/Applications/Postgres.app/Contents/Versions/11/include/libxml2  -I/Applications/Postgres.app/Contents/Versions/11/include  -c -o src/backend/optimizer/cypher_paths.o src/backend/optimizer/cypher_paths.c
/usr/bin/flex -b  -o'src/backend/parser/ag_scanner.c' src/backend/parser/ag_scanner.l
gcc -Wall -Wmissing-prototypes -Wpointer-arith -Wdeclaration-after-statement -Wendif-labels -Wmissing-format-attribute -Wformat-security -fno-strict-aliasing -fwrapv -Wno-unused-command-line-argument  -mmacosx-version-min=10.12  -I.//src/include -I. -I./ -I/Applications/Postgres.app/Contents/Versions/11/include/postgresql/server -I/Applications/Postgres.app/Contents/Versions/11/include/postgresql/internal -I/Applications/Postgres.app/Contents/Versions/11/share/icu -I/Applications/Postgres.app/Contents/Versions/11/include/libxml2  -I/Applications/Postgres.app/Contents/Versions/11/include  -c -o src/backend/parser/ag_scanner.o src/backend/parser/ag_scanner.c
src/backend/parser/ag_scanner.c:3668:23: warning: unused variable 'yyg' [-Wunused-variable]
    struct yyguts_t * yyg = (struct yyguts_t*)yyscanner; /* This var may be unused depending upon options. */
                      ^
src/backend/parser/ag_scanner.c:4103:5: warning: no previous prototype for function 'ag_yyget_column' [-Wmissing-prototypes]
int ag_yyget_column  (yyscan_t yyscanner)
    ^
src/backend/parser/ag_scanner.c:4103:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
int ag_yyget_column  (yyscan_t yyscanner)
^
static
src/backend/parser/ag_scanner.c:4131:6: warning: no previous prototype for function 'ag_yyset_column' [-Wmissing-prototypes]
void ag_yyset_column (int  column_no , yyscan_t yyscanner)
     ^
src/backend/parser/ag_scanner.c:4131:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
void ag_yyset_column (int  column_no , yyscan_t yyscanner)
^
static
3 warnings generated.
gcc -Wall -Wmissing-prototypes -Wpointer-arith -Wdeclaration-after-statement -Wendif-labels -Wmissing-format-attribute -Wformat-security -fno-strict-aliasing -fwrapv -Wno-unused-command-line-argument  -mmacosx-version-min=10.12  -I.//src/include -I. -I./ -I/Applications/Postgres.app/Contents/Versions/11/include/postgresql/server -I/Applications/Postgres.app/Contents/Versions/11/include/postgresql/internal -I/Applications/Postgres.app/Contents/Versions/11/share/icu -I/Applications/Postgres.app/Contents/Versions/11/include/libxml2  -I/Applications/Postgres.app/Contents/Versions/11/include  -c -o src/backend/parser/cypher_analyze.o src/backend/parser/cypher_analyze.c
gcc -Wall -Wmissing-prototypes -Wpointer-arith -Wdeclaration-after-statement -Wendif-labels -Wmissing-format-attribute -Wformat-security -fno-strict-aliasing -fwrapv -Wno-unused-command-line-argument  -mmacosx-version-min=10.12  -I.//src/include -I. -I./ -I/Applications/Postgres.app/Contents/Versions/11/include/postgresql/server -I/Applications/Postgres.app/Contents/Versions/11/include/postgresql/internal -I/Applications/Postgres.app/Contents/Versions/11/share/icu -I/Applications/Postgres.app/Contents/Versions/11/include/libxml2  -I/Applications/Postgres.app/Contents/Versions/11/include  -c -o src/backend/parser/cypher_clause.o src/backend/parser/cypher_clause.c
gcc -Wall -Wmissing-prototypes -Wpointer-arith -Wdeclaration-after-statement -Wendif-labels -Wmissing-format-attribute -Wformat-security -fno-strict-aliasing -fwrapv -Wno-unused-command-line-argument  -mmacosx-version-min=10.12  -I.//src/include -I. -I./ -I/Applications/Postgres.app/Contents/Versions/11/include/postgresql/server -I/Applications/Postgres.app/Contents/Versions/11/include/postgresql/internal -I/Applications/Postgres.app/Contents/Versions/11/share/icu -I/Applications/Postgres.app/Contents/Versions/11/include/libxml2  -I/Applications/Postgres.app/Contents/Versions/11/include  -c -o src/backend/executor/cypher_delete.o src/backend/executor/cypher_delete.c
gcc -Wall -Wmissing-prototypes -Wpointer-arith -Wdeclaration-after-statement -Wendif-labels -Wmissing-format-attribute -Wformat-security -fno-strict-aliasing -fwrapv -Wno-unused-command-line-argument  -mmacosx-version-min=10.12  -I.//src/include -I. -I./ -I/Applications/Postgres.app/Contents/Versions/11/include/postgresql/server -I/Applications/Postgres.app/Contents/Versions/11/include/postgresql/internal -I/Applications/Postgres.app/Contents/Versions/11/share/icu -I/Applications/Postgres.app/Contents/Versions/11/include/libxml2  -I/Applications/Postgres.app/Contents/Versions/11/include  -c -o src/backend/parser/cypher_expr.o src/backend/parser/cypher_expr.c
/usr/bin/bison --defines=.//src/include/parser/cypher_gram_def.h -o src/backend/parser/cypher_gram.c src/backend/parser/cypher_gram.y
gcc -Wall -Wmissing-prototypes -Wpointer-arith -Wdeclaration-after-statement -Wendif-labels -Wmissing-format-attribute -Wformat-security -fno-strict-aliasing -fwrapv -Wno-unused-command-line-argument  -mmacosx-version-min=10.12  -I.//src/include -I. -I./ -I/Applications/Postgres.app/Contents/Versions/11/include/postgresql/server -I/Applications/Postgres.app/Contents/Versions/11/include/postgresql/internal -I/Applications/Postgres.app/Contents/Versions/11/share/icu -I/Applications/Postgres.app/Contents/Versions/11/include/libxml2  -I/Applications/Postgres.app/Contents/Versions/11/include  -c -o src/backend/parser/cypher_gram.o src/backend/parser/cypher_gram.c
gcc -Wall -Wmissing-prototypes -Wpointer-arith -Wdeclaration-after-statement -Wendif-labels -Wmissing-format-attribute -Wformat-security -fno-strict-aliasing -fwrapv -Wno-unused-command-line-argument  -mmacosx-version-min=10.12  -I.//src/include -I. -I./ -I/Applications/Postgres.app/Contents/Versions/11/include/postgresql/server -I/Applications/Postgres.app/Contents/Versions/11/include/postgresql/internal -I/Applications/Postgres.app/Contents/Versions/11/share/icu -I/Applications/Postgres.app/Contents/Versions/11/include/libxml2  -I/Applications/Postgres.app/Contents/Versions/11/include  -c -o src/backend/parser/cypher_item.o src/backend/parser/cypher_item.c
gcc -Wall -Wmissing-prototypes -Wpointer-arith -Wdeclaration-after-statement -Wendif-labels -Wmissing-format-attribute -Wformat-security -fno-strict-aliasing -fwrapv -Wno-unused-command-line-argument  -mmacosx-version-min=10.12  -I.//src/include -I. -I./ -I/Applications/Postgres.app/Contents/Versions/11/include/postgresql/server -I/Applications/Postgres.app/Contents/Versions/11/include/postgresql/internal -I/Applications/Postgres.app/Contents/Versions/11/share/icu -I/Applications/Postgres.app/Contents/Versions/11/include/libxml2  -I/Applications/Postgres.app/Contents/Versions/11/include  -c -o src/backend/parser/cypher_keywords.o src/backend/parser/cypher_keywords.c
gcc -Wall -Wmissing-prototypes -Wpointer-arith -Wdeclaration-after-statement -Wendif-labels -Wmissing-format-attribute -Wformat-security -fno-strict-aliasing -fwrapv -Wno-unused-command-line-argument  -mmacosx-version-min=10.12  -I.//src/include -I. -I./ -I/Applications/Postgres.app/Contents/Versions/11/include/postgresql/server -I/Applications/Postgres.app/Contents/Versions/11/include/postgresql/internal -I/Applications/Postgres.app/Contents/Versions/11/share/icu -I/Applications/Postgres.app/Contents/Versions/11/include/libxml2  -I/Applications/Postgres.app/Contents/Versions/11/include  -c -o src/backend/parser/cypher_parse_agg.o src/backend/parser/cypher_parse_agg.c
gcc -Wall -Wmissing-prototypes -Wpointer-arith -Wdeclaration-after-statement -Wendif-labels -Wmissing-format-attribute -Wformat-security -fno-strict-aliasing -fwrapv -Wno-unused-command-line-argument  -mmacosx-version-min=10.12  -I.//src/include -I. -I./ -I/Applications/Postgres.app/Contents/Versions/11/include/postgresql/server -I/Applications/Postgres.app/Contents/Versions/11/include/postgresql/internal -I/Applications/Postgres.app/Contents/Versions/11/share/icu -I/Applications/Postgres.app/Contents/Versions/11/include/libxml2  -I/Applications/Postgres.app/Contents/Versions/11/include  -c -o src/backend/parser/cypher_parse_node.o src/backend/parser/cypher_parse_node.c
gcc -Wall -Wmissing-prototypes -Wpointer-arith -Wdeclaration-after-statement -Wendif-labels -Wmissing-format-attribute -Wformat-security -fno-strict-aliasing -fwrapv -Wno-unused-command-line-argument  -mmacosx-version-min=10.12  -I.//src/include -I. -I./ -I/Applications/Postgres.app/Contents/Versions/11/include/postgresql/server -I/Applications/Postgres.app/Contents/Versions/11/include/postgresql/internal -I/Applications/Postgres.app/Contents/Versions/11/share/icu -I/Applications/Postgres.app/Contents/Versions/11/include/libxml2  -I/Applications/Postgres.app/Contents/Versions/11/include  -c -o src/backend/parser/cypher_parser.o src/backend/parser/cypher_parser.c
src/backend/parser/cypher_parser.c:133:16: error: implicit declaration of function 'cypher_yyparse' is invalid in C99
      [-Werror,-Wimplicit-function-declaration]
    yyresult = cypher_yyparse(scanner, &extra);
               ^
src/backend/parser/cypher_parser.c:133:16: note: did you mean 'cypher_yyerror'?
src/backend/parser/cypher_parser.c:115:6: note: 'cypher_yyerror' declared here
void cypher_yyerror(YYLTYPE *llocp, ag_scanner_t scanner,
     ^
1 error generated.
make[1]: *** [src/backend/parser/cypher_parser.o] Error 1
make: *** [/Applications/Postgres.app/Contents/Versions/11/share/postgresql/extension/age.control] Error 2

[emotionbug]

@deem0n interesting.
which bison version are you using?

[deem0n]

@deem0n interesting.
which bison version are you using?

I guess it is version provided by Apple:

bison (GNU Bison) 2.3
Written by Robert Corbett and Richard Stallman.

[emotionbug]

Ok, I tested with bison version that you installed.
It seems not compatible with 2.3.

how about try the latest version that you can download from brew?

root@0529b47f9958:/age/incubator-age#  cat /etc/os-release
NAME="Ubuntu"
VERSION="16.04.1 LTS (Xenial Xerus)"
ID=ubuntu
ID_LIKE=debian
PRETTY_NAME="Ubuntu 16.04.1 LTS"
VERSION_ID="16.04"
HOME_URL="http://www.ubuntu.com/"
SUPPORT_URL="http://help.ubuntu.com/"
BUG_REPORT_URL="http://bugs.launchpad.net/ubuntu/"
UBUNTU_CODENAME=xenial
root@0529b47f9958:/age/incubator-age# bison --version
bison (GNU Bison) 2.3
Written by Robert Corbett and Richard Stallman.

Copyright (C) 2006 Free Software Foundation, Inc.
This is free software; see the source for copying conditions.  There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
root@0529b47f9958:/age/incubator-age# bison --version^C
root@0529b47f9958:/age/incubator-age# make -j16
/usr/bin/bison -Wno-deprecated  --defines=.//src/include/parser/cypher_gram_def.h -o src/backend/parser/cypher_gram.c src/backend/parser/cypher_gram.y
gcc -Wall -Wmissing-prototypes -Wpointer-arith -Wdeclaration-after-statement -Wendif-labels -Wmissing-format-attribute -Wformat-security -fno-strict-aliasing -fwrapv -fexcess-precision=standard -g -g -O2 -fstack-protector-strong -Wformat -Werror=format-security -fPIC -pie -fno-omit-frame-pointer -fPIC -I.//src/include -I. -I./ -I/usr/include/postgresql/11/server -I/usr/include/postgresql/internal -I/usr/include/x86_64-linux-gnu -Wdate-time -D_FORTIFY_SOURCE=2 -D_GNU_SOURCE -I/usr/include/libxml2  -I/usr/include/mit-krb5  -c -o src/backend/parser/cypher_item.o src/backend/parser/cypher_item.c
gcc -Wall -Wmissing-prototypes -Wpointer-arith -Wdeclaration-after-statement -Wendif-labels -Wmissing-format-attribute -Wformat-security -fno-strict-aliasing -fwrapv -fexcess-precision=standard -g -g -O2 -fstack-protector-strong -Wformat -Werror=format-security -fPIC -pie -fno-omit-frame-pointer -fPIC -I.//src/include -I. -I./ -I/usr/include/postgresql/11/server -I/usr/include/postgresql/internal -I/usr/include/x86_64-linux-gnu -Wdate-time -D_FORTIFY_SOURCE=2 -D_GNU_SOURCE -I/usr/include/libxml2  -I/usr/include/mit-krb5  -c -o src/backend/parser/cypher_keywords.o src/backend/parser/cypher_keywords.c
gcc -Wall -Wmissing-prototypes -Wpointer-arith -Wdeclaration-after-statement -Wendif-labels -Wmissing-format-attribute -Wformat-security -fno-strict-aliasing -fwrapv -fexcess-precision=standard -g -g -O2 -fstack-protector-strong -Wformat -Werror=format-security -fPIC -pie -fno-omit-frame-pointer -fPIC -I.//src/include -I. -I./ -I/usr/include/postgresql/11/server -I/usr/include/postgresql/internal -I/usr/include/x86_64-linux-gnu -Wdate-time -D_FORTIFY_SOURCE=2 -D_GNU_SOURCE -I/usr/include/libxml2  -I/usr/include/mit-krb5  -c -o src/backend/parser/cypher_parse_agg.o src/backend/parser/cypher_parse_agg.c
gcc -Wall -Wmissing-prototypes -Wpointer-arith -Wdeclaration-after-statement -Wendif-labels -Wmissing-format-attribute -Wformat-security -fno-strict-aliasing -fwrapv -fexcess-precision=standard -g -g -O2 -fstack-protector-strong -Wformat -Werror=format-security -fPIC -pie -fno-omit-frame-pointer -fPIC -I.//src/include -I. -I./ -I/usr/include/postgresql/11/server -I/usr/include/postgresql/internal -I/usr/include/x86_64-linux-gnu -Wdate-time -D_FORTIFY_SOURCE=2 -D_GNU_SOURCE -I/usr/include/libxml2  -I/usr/include/mit-krb5  -c -o src/backend/parser/cypher_parse_node.o src/backend/parser/cypher_parse_node.c
/usr/bin/bison: invalid option -- 'W'
Try `/usr/bin/bison --help' for more information.
/usr/lib/postgresql/11/lib/pgxs/src/makefiles/../../src/Makefile.global:736: recipe for target 'src/backend/parser/cypher_gram.c' failed
make: *** [src/backend/parser/cypher_gram.c] Error 1
make: *** Waiting for unfinished jobs....
In file included from src/backend/parser/cypher_keywords.c:30:0:
.//src/include/parser/cypher_gram.h:66:36: fatal error: parser/cypher_gram_def.h: No such file or directory
compilation terminated.
<builtin>: recipe for target 'src/backend/parser/cypher_keywords.o' failed
make: *** [src/backend/parser/cypher_keywords.o] Error 1
root@0529b47f9958:/age/incubator-age# make
/usr/bin/bison -Wno-deprecated  --defines=.//src/include/parser/cypher_gram_def.h -o src/backend/parser/cypher_gram.c src/backend/parser/cypher_gram.y
/usr/bin/bison: invalid option -- 'W'
Try `/usr/bin/bison --help' for more information.
/usr/lib/postgresql/11/lib/pgxs/src/makefiles/../../src/Makefile.global:736: recipe for target 'src/backend/parser/cypher_gram.c' failed
make: *** [src/backend/parser/cypher_gram.c] Error 1
root@0529b47f9958:/age/incubator-age# 

[deem0n]

I used bison from brew with export PATH="/usr/local/opt/bison/bin:$PATH", but the same error. I see only one bison invocation:

/usr/bin/bison --defines=.//src/include/parser/cypher_gram_def.h -o src/backend/parser/cypher_gram.c src/backend/parser/cypher_gram.y
gcc -Wall -Wmissing-prototypes -Wpointer-arith -Wdeclaration-after-statement -Wendif-labels -Wmissing-format-attribute -Wformat-security -fno-strict-aliasing -fwrapv -Wno-unused-command-line-argument  -mmacosx-version-min=10.12  -I.//src/include -I. -I./ -I/Applications/Postgres.app/Contents/Versions/11/include/postgresql/server -I/Applications/Postgres.app/Contents/Versions/11/include/postgresql/internal -I/Applications/Postgres.app/Contents/Versions/11/share/icu -I/Applications/Postgres.app/Contents/Versions/11/include/libxml2  -I/Applications/Postgres.app/Contents/Versions/11/include  -c -o src/backend/parser/cypher_gram.o src/backend/parser/cypher_gram.c

And it runs without problem. Both bison 3.7 from brew and bison 2.3 on Mac OS X do the job. The problem is that compiler can not handle function use without prior declaration: implicit declaration of function 'cypher_yyparse' is invalid in C99

The error is in the cypher_parser.c which is part of the git repo and is not generated by bison during the build.

[muhammadshoaib]

This worked for me on mac. but it shall be tested if making it permanent permanent part of the code will create any other problem or not.