Merge branch 'cw/maint-exec-defpath' into maint

* cw/maint-exec-defpath:
  autoconf: Check if <paths.h> exists and set HAVE_PATHS_H
  exec_cmd.c: replace hard-coded path list with one from <paths.h>

Makefile

@@ -31,6 +31,9 @@ all::
 # Define EXPATDIR=/foo/bar if your expat header and library files are in
 # /foo/bar/include and /foo/bar/lib directories.
 #
+# Define HAVE_PATHS_H if you have paths.h and want to use the default PATH
+# it specifies.
+#
 # Define NO_D_INO_IN_DIRENT if you don't have d_ino in your struct dirent.
 #
 # Define NO_D_TYPE_IN_DIRENT if your platform defines DT_UNKNOWN but lacks
@@ -735,10 +738,12 @@ EXTLIBS =
 ifeq ($(uname_S),Linux)
 	NO_STRLCPY = YesPlease
 	NO_MKSTEMPS = YesPlease
+	HAVE_PATHS_H = YesPlease
 endif
 ifeq ($(uname_S),GNU/kFreeBSD)
 	NO_STRLCPY = YesPlease
 	NO_MKSTEMPS = YesPlease
+	HAVE_PATHS_H = YesPlease
 endif
 ifeq ($(uname_S),UnixWare)
 	CC = cc
@@ -867,6 +872,7 @@ ifeq ($(uname_S),FreeBSD)
 		NO_STRTOUMAX = YesPlease
 	endif
 	PYTHON_PATH = /usr/local/bin/python
+	HAVE_PATHS_H = YesPlease
 endif
 ifeq ($(uname_S),OpenBSD)
 	NO_STRCASESTR = YesPlease
@@ -875,6 +881,7 @@ ifeq ($(uname_S),OpenBSD)
 	NEEDS_LIBICONV = YesPlease
 	BASIC_CFLAGS += -I/usr/local/include
 	BASIC_LDFLAGS += -L/usr/local/lib
+	HAVE_PATHS_H = YesPlease
 endif
 ifeq ($(uname_S),NetBSD)
 	ifeq ($(shell expr "$(uname_R)" : '[01]\.'),2)
@@ -884,6 +891,7 @@ ifeq ($(uname_S),NetBSD)
 	BASIC_LDFLAGS += -L/usr/pkg/lib $(CC_LD_DYNPATH)/usr/pkg/lib
 	USE_ST_TIMESPEC = YesPlease
 	NO_MKSTEMPS = YesPlease
+	HAVE_PATHS_H = YesPlease
 endif
 ifeq ($(uname_S),AIX)
 	DEFAULT_PAGER = more
@@ -905,6 +913,7 @@ ifeq ($(uname_S),GNU)
 	# GNU/Hurd
 	NO_STRLCPY=YesPlease
 	NO_MKSTEMPS = YesPlease
+	HAVE_PATHS_H = YesPlease
 endif
 ifeq ($(uname_S),IRIX)
 	NO_SETENV = YesPlease
@@ -1354,6 +1363,10 @@ else
 	LIB_OBJS += thread-utils.o
 endif
 
+ifdef HAVE_PATHS_H
+	BASIC_CFLAGS += -DHAVE_PATHS_H
+endif
+
 ifdef DIR_HAS_BSD_GROUP_SEMANTICS
 	COMPAT_CFLAGS += -DDIR_HAS_BSD_GROUP_SEMANTICS
 endif

config.mak.in

@@ -31,6 +31,7 @@ NO_OPENSSL=@NO_OPENSSL@
 NO_CURL=@NO_CURL@
 NO_EXPAT=@NO_EXPAT@
 NO_LIBGEN_H=@NO_LIBGEN_H@
+HAVE_PATHS_H=@HAVE_PATHS_H@
 NEEDS_LIBICONV=@NEEDS_LIBICONV@
 NEEDS_SOCKET=@NEEDS_SOCKET@
 NEEDS_RESOLV=@NEEDS_RESOLV@

configure.ac

@@ -724,6 +724,12 @@ AC_CHECK_HEADER([libgen.h],
 [NO_LIBGEN_H=YesPlease])
 AC_SUBST(NO_LIBGEN_H)
 #
+# Define HAVE_PATHS_H if you have paths.h.
+AC_CHECK_HEADER([paths.h],
+[HAVE_PATHS_H=YesPlease],
+[HAVE_PATHS_H=])
+AC_SUBST(HAVE_PATHS_H)
+#
 # Define NO_STRCASESTR if you don't have strcasestr.
 GIT_CHECK_FUNC(strcasestr,
 [NO_STRCASESTR=],

exec_cmd.c

@@ -107,7 +107,7 @@ void setup_path(void)
 	if (old_path)
 		strbuf_addstr(&new_path, old_path);
 	else
-		strbuf_addstr(&new_path, "/usr/local/bin:/usr/bin:/bin");
+		strbuf_addstr(&new_path, _PATH_DEFPATH);
 
 	setenv("PATH", new_path.buf, 1);
 

git-compat-util.h

@@ -164,6 +164,13 @@ extern char *gitbasename(char *);
 #define PATH_SEP ':'
 #endif
 
+#ifdef HAVE_PATHS_H
+#include <paths.h>
+#endif
+#ifndef _PATH_DEFPATH
+#define _PATH_DEFPATH "/usr/local/bin:/usr/bin:/bin"
+#endif
+
 #ifndef STRIP_EXTENSION
 #define STRIP_EXTENSION ""
 #endif