[PATCH v2 3/4] INSTALL/configure: Update install doc and configure comment

[Daniel Kiper <daniel.kiper@oracle.com>]

..to reflect the GRUB build reality in them.

Additionally, fix ./configure command example formatting in INSTALL file.

Signed-off-by: Daniel Kiper <daniel.kiper@oracle.com>
---
 INSTALL      | 51 +++++++++++++++++++++++++++------------------------
 configure.ac | 10 ++++++----
 2 files changed, 33 insertions(+), 28 deletions(-)

diff --git a/INSTALL b/INSTALL
index 8acb40902..d1b3bb60e 100644
--- a/INSTALL
+++ b/INSTALL
@@ -160,12 +160,12 @@ For this example the configure line might look like (more details below)
 (some options are optional and included here for completeness but some rarely
 used options are omitted):
 
-./configure BUILD_CC=gcc BUILD_PKG_CONFIG=pkg-config --host=amd64-linux-gnu
-CC=amd64-linux-gnu-gcc CFLAGS="-g -O2" PKG_CONFIG=amd64-linux-gnu-pkg-config
---target=arm --with-platform=uboot TARGET_CC=arm-elf-gcc
-TARGET_CFLAGS="-Os -march=armv6" TARGET_CCASFLAGS="-march=armv6"
-TARGET_OBJCOPY="arm-elf-objcopy" TARGET_STRIP="arm-elf-strip"
-TARGET_NM=arm-elf-nm TARGET_RANLIB=arm-elf-ranlib LEX=gflex
+./configure BUILD_CC=gcc BUILD_PKG_CONFIG=pkg-config --host=amd64-linux-gnu \
+  CC=amd64-linux-gnu-gcc CFLAGS="-g -O2" PKG_CONFIG=amd64-linux-gnu-pkg-config \
+  --target=arm --with-platform=uboot TARGET_CC=arm-elf-gcc \
+  TARGET_CFLAGS="-Os -march=armv6" TARGET_CCASFLAGS="-march=armv6" \
+  TARGET_OBJCOPY="arm-elf-objcopy" TARGET_STRIP="arm-elf-strip" \
+  TARGET_NM=arm-elf-nm TARGET_RANLIB=arm-elf-ranlib LEX=gflex
 
 You need to use following options to specify tools and platforms. For minimum
 version look at prerequisites. All tools not mentioned in this section under
@@ -182,28 +182,31 @@ corresponding platform are not needed for the platform in question.
 
   - For host
     1. --host= to autoconf name of host.
-    2. CC= for gcc able to compile for host
-    3. HOST_CFLAGS= for C options for host.
-    4. HOST_CPPFLAGS= for C preprocessor options for host.
-    5. HOST_LDFLAGS= for linker options for host.
-    6. PKG_CONFIG= for pkg-config for host (optional).
-    7. Libdevmapper if any must be in standard linker folders (-ldevmapper) (optional).
-    8. Libfuse if any must be in standard linker folders (-lfuse) (optional).
-    9. Libzfs if any must be in standard linker folders (-lzfs) (optional).
-    10. Liblzma if any must be in standard linker folders (-llzma) (optional).
+    2. CC= for gcc able to compile for host and target.
+    3. CFLAGS= for C options for host and target.
+    4. HOST_CFLAGS= for C options for host.
+    5. HOST_CPPFLAGS= for C preprocessor options for host.
+    6. HOST_LDFLAGS= for linker options for host.
+    7. PKG_CONFIG= for pkg-config for host (optional).
+    8. Libdevmapper if any must be in standard linker folders (-ldevmapper) (optional).
+    9. Libfuse if any must be in standard linker folders (-lfuse) (optional).
+    10. Libzfs if any must be in standard linker folders (-lzfs) (optional).
+    11. Liblzma if any must be in standard linker folders (-llzma) (optional).
 
   - For target
     1. --target= to autoconf cpu name of target.
     2. --with-platform to choose firmware.
-    3. TARGET_CC= for gcc able to compile for target
-    4. TARGET_CFLAGS= for C options for target.
-    5. TARGET_CPPFLAGS= for C preprocessor options for target.
-    6. TARGET_CCASFLAGS= for assembler options for target.
-    7. TARGET_LDFLAGS= for linker options for target.
-    8. TARGET_OBJCOPY= for objcopy for target.
-    9. TARGET_STRIP= for strip for target.
-    10. TARGET_NM= for nm for target.
-    11. TARGET_RANLIB= for ranlib for target.
+    3. CC= for gcc able to compile for host and target.
+    4. CFLAGS= for C options for host and target.
+    5. TARGET_CC= for gcc able to compile for target.
+    6. TARGET_CFLAGS= for C options for target.
+    7. TARGET_CPPFLAGS= for C preprocessor options for target.
+    8. TARGET_CCASFLAGS= for assembler options for target.
+    9. TARGET_LDFLAGS= for linker options for target.
+    10. TARGET_OBJCOPY= for objcopy for target.
+    11. TARGET_STRIP= for strip for target.
+    12. TARGET_NM= for nm for target.
+    13. TARGET_RANLIB= for ranlib for target.
 
   - Additionally for emu, for host and target.
     1. SDL is looked for in standard linker directories (-lSDL) (optional)
diff --git a/configure.ac b/configure.ac
index fc74ee800..06bc4fb0c 100644
--- a/configure.ac
+++ b/configure.ac
@@ -26,10 +26,12 @@ dnl This is necessary because the target type in autoconf does not
 dnl describe such a system very well.
 dnl
 dnl The current strategy is to use variables with no prefix (such as
-dnl CC, CFLAGS, etc.) for the host type, variables with prefix "BUILD_"
-dnl (such as BUILD_CC, BUILD_CFLAGS, etc.) for the build type and variables
-dnl with the prefix "TARGET_" (such as TARGET_CC, TARGET_CFLAGS, etc.) are
-dnl used for the target type. See INSTALL for full list of variables.
+dnl CC, CFLAGS, etc.) for the host and target type, variables with
+dnl prefix "BUILD_" (such as BUILD_CC, BUILD_CFLAGS, etc.) for the
+dnl build type, variables with prefix "HOST_" (such as HOST_CC,
+dnl HOST_CFLAGS, etc.) for the host type and variables with the prefix
+dnl "TARGET_" (such as TARGET_CC, TARGET_CFLAGS, etc.) are used for
+dnl the target type. See INSTALL for full list of variables.
 
 AC_INIT([GRUB],[2.05],[bug-grub@gnu.org])
 
-- 
2.11.0