[PATCH 1/2] Add HOSTCC configure variable for build host CC to facilitate cross-compiling.

[Sergey K. <rav...@gm...>]

Required to build man pages via ttman when CROSS is set to different architecture.

Signed-off-by: Sergey Kvachonok <rav...@gm...>
---
 configure         |    5 ++++-
 scripts/checks.sh |   13 +++++++++++++
 scripts/lib.mk    |    8 ++++++++
 3 files changed, 25 insertions(+), 1 deletions(-)

diff --git a/configure b/configure
index 4ed6eb2..6336635 100755
--- a/configure
+++ b/configure
@@ -327,7 +327,9 @@ Optional Features: y/n
   CONFIG_SUN      Sun Audio                                       [auto]
   CONFIG_WAVEOUT  Windows Wave Out                                [auto]
 
-Also many standard variables like CC are recognized."
+Also many standard variables like CC, LD, CFLAGS, LDFLAGS are recognized.
+Cross compiling is supported via CROSS=target-prefix-
+    optionally set HOSTCC=this-machine-gcc, HOSTLD, HOST_CFLAGS, HOST_LDFLAGS."
 
 parse_command_line "$@"
 
@@ -346,6 +348,7 @@ var_default mandir "${datadir}/man"
 var_default exampledir "${datadir}/doc/cmus/examples"
 
 check check_cc
+check check_host_cc
 check check_cflags
 check check_cc_depgen
 check check_endianness
diff --git a/scripts/checks.sh b/scripts/checks.sh
index 20edc40..266ae14 100644
--- a/scripts/checks.sh
+++ b/scripts/checks.sh
@@ -180,6 +180,19 @@ check_cc()
 	return 0
 }
 
+# HOSTCC, HOSTLD, HOST_CFLAGS, HOST_LDFLAGS
+check_host_cc()
+{
+	var_default HOSTCC gcc
+	var_default HOSTLD $HOSTCC
+	var_default HOST_CFLAGS "-g -O2 -Wall"
+	var_default HOST_LDFLAGS ""
+	check_program $HOSTCC || return 1
+	makefile_vars HOSTCC HOSTLD HOST_CFLAGS HOST_LDFLAGS
+	__check_lang=c
+	return 0
+}
+
 # CXX, CXXLD, CXXFLAGS, CXXLDFLAGS, SOFLAGS, LDSOFLAGS, LDDLFLAGS
 check_cxx()
 {
diff --git a/scripts/lib.mk b/scripts/lib.mk
index b85c089..81d23ac 100644
--- a/scripts/lib.mk
+++ b/scripts/lib.mk
@@ -85,6 +85,10 @@ uninstall:
 quiet_cmd_cc    = CC     $@
       cmd_cc    = $(CC) -c $(CFLAGS) -o $@ $<
 
+# HOSTCC for program object files (.o)
+quiet_cmd_hostcc    = HOSTCC     $@
+      cmd_hostcc    = $(HOSTCC) -c $(HOST_CFLAGS) -o $@ $<
+
 # CC for shared library and dynamically loadable module objects (.lo)
 quiet_cmd_cc_lo = CC     $@
       cmd_cc_lo = $(CC) -c $(CFLAGS) $(SOFLAGS) -o $@ $<
@@ -93,6 +97,10 @@ quiet_cmd_cc_lo = CC     $@
 quiet_cmd_ld = LD     $@
       cmd_ld = $(LD) $(LDFLAGS) -o $@ $^ $(1)
 
+# HOSTLD for programs, optional parameter: libraries
+quiet_cmd_hostld = HOSTLD     $@
+      cmd_hostld = $(HOSTLD) $(HOST_LDFLAGS) -o $@ $^ $(1)
+
 # LD for shared libraries, optional parameter: libraries
 quiet_cmd_ld_so = LD     $@
       cmd_ld_so = $(LD) $(LDSOFLAGS) $(LDFLAGS) -o $@ $^ $(1)
-- 
1.7.3.2