Add a check to "configure" to see whether -lnsl is needed for programs
that are using gethostbyname(). This change also adds the file
"compat/check_ghbn.c", which configure uses to perform its check.
---
compat/check_ghbn.c | 8 ++++++++
configure | 17 ++++++++++++++++-
2 files changed, 24 insertions(+), 1 deletion(-)
create mode 100644 compat/check_ghbn.c
diff --git a/compat/check_ghbn.c b/compat/check_ghbn.c
new file mode 100644
index 0000000..ec5f227
--- /dev/null
+++ b/compat/check_ghbn.c
@@ -0,0 +1,8 @@
+#include <netdb.h>
+
+int main()
+{
+ (void) gethostbyname(NULL);
+
+ return (0);
+}
diff --git a/configure b/configure
index 047c011..28d4110 100755
--- a/configure
+++ b/configure
@@ -534,6 +534,17 @@ else
fi
rm -f compat/check_asctime
+printf "Checking whether libnsl is needed for gethostbyname... "
+if ${CC} -o compat/check_ghbn "$srcdir"/compat/check_ghbn.c > /dev/null 2>&1
+then
+ printf "No.\n"
+ libnsl_ldflags=""
+else
+ printf "Yes.\n"
+ libnsl_ldflags="-lnsl"
+fi
+rm -f compat/check_ghbn
+
printf "int main(void){return 0;}\n" > minimal.c
printf "Checking for rpath support... "
@@ -723,6 +734,9 @@ GMIME_LDFLAGS = ${gmime_ldflags}
TALLOC_CFLAGS = ${talloc_cflags}
TALLOC_LDFLAGS = ${talloc_ldflags}
+# Flags needed to get gethostbyname() at link time
+LIBNSL_LDFLAGS = ${libnsl_ldflags}
+
# Flags needed to have linker set rpath attribute
RPATH_LDFLAGS = ${rpath_ldflags}
@@ -757,5 +771,6 @@ CONFIGURE_CXXFLAGS = -DHAVE_GETLINE=\$(HAVE_GETLINE) \$(GMIME_CFLAGS) \\
-DHAVE_STRCASESTR=\$(HAVE_STRCASESTR) \\
-DSTD_GETPWUID=\$(STD_GETPWUID) \\
-DSTD_ASCTIME=\$(STD_ASCTIME)
-CONFIGURE_LDFLAGS = \$(GMIME_LDFLAGS) \$(TALLOC_LDFLAGS) \$(XAPIAN_LDFLAGS)
+CONFIGURE_LDFLAGS = \$(GMIME_LDFLAGS) \$(TALLOC_LDFLAGS) \$(XAPIAN_LDFLAGS) \\
+ \$(LIBNSL_LDFLAGS)
EOF
--
1.7.9.2