[Buildroot] fortran support
thomas.petazzoni at free-electrons.com
Thu Mar 5 21:40:49 UTC 2015
Dear David Kessler,
On Thu, 05 Mar 2015 15:27:06 -0600, David Kessler wrote:
> How can I go about adding the Fortran compiler to my cross compile
> toolchain? I'm currently using the Buildroot toolchain but Fortran has
> been deprecated for some time now. Is there a way that I can add the
> arm Fortran compiler to the toolchain built by Buildroot, perhaps as a
> package or something?
This shouldn't be too difficult I believe. You need to adjust the gcc
package to enable the fortran language, and make sure the fortran
runtime library is copied to the target.
Here is a completely untested (not even compile tested) attempt at
adding some basic Fortran support to the gcc package:
diff --git a/package/gcc/Config.in.host b/package/gcc/Config.in.host
index e07d881..3609588 100644
@@ -108,6 +108,13 @@ config BR2_TOOLCHAIN_BUILDROOT_CXX
C++ language and you want C++ libraries to be installed on
your target system.
+ bool "Enable Fortran support"
+ Enable this option if you want your toolchain to support the
+ Fortran language and you want Fortran libraries to be
+ installed on your target system.
bool "Enable compiler tls support" if BR2_TOOLCHAIN_BUILDROOT_UCLIBC
diff --git a/package/gcc/gcc-final/gcc-final.mk b/package/gcc/gcc-final/gcc-final.mk
index c014bc5..087bdec 100644
@@ -44,6 +44,7 @@ endef
# Languages supported by the cross-compiler
GCC_FINAL_CROSS_LANGUAGES-y = c
GCC_FINAL_CROSS_LANGUAGES-$(BR2_INSTALL_LIBSTDCPP) += c++
+GCC_FINAL_CROSS_LANGUAGES-$(BR2_TOOLCHAIN_BUILDROOT_FORTRAN) += fortran
GCC_FINAL_CROSS_LANGUAGES = $(subst $(space),$(comma),$(GCC_FINAL_CROSS_LANGUAGES-y))
HOST_GCC_FINAL_CONF_OPTS = \
@@ -126,6 +127,10 @@ ifeq ($(BR2_INSTALL_LIBSTDCPP),y)
HOST_GCC_FINAL_USR_LIBS += libstdc++
+HOST_GCC_FINAL_USR_LIBS += libfortran
HOST_GCC_FINAL_USR_LIBS += libgomp
Let me know if this somewhat works, and please submit a patch once/if
you get this working!
Thomas Petazzoni, CTO, Free Electrons
Embedded Linux, Kernel and Android engineering
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