d0p1/tcc-stupidos
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tcc.h: Extend search path for include, lib and crt

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This allow the tcc cross compilers to work as expected,
when tcc was build with '--enable-cross' and a simple config-extra.mak
(see the provided config-extra.mak.example).
Make sure, that cross development packages for libc are installed

Fixes also open bugs in various bug tracker. Example in debian: 940469
  tcc: error: library 'c' not found
  tcc: error: file 'crtn.o' not found
  tcc: error: undefined symbol 'printf'
This commit is contained in:
Detlef Riekenberg 2022-09-24 01:05:02 +02:00
parent fa25630ce4
commit 2507c71704
2 changed files with 34 additions and 1 deletions
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27
config-extra.mak.example Normal file
View file

@ -0,0 +1,27 @@
#
# during 'make', this file is included from the tcc Makefile
#
# this is an example, how to help tcc to find
# the c library and the startup files for cross compiling.
#
# we expect here, that the GNU libc is used and that the related development files
# are installed in a subdirectory with the target triplet used by gcc
#
# set CONFIG_TRIPLET for cross compiler targets
DEF-i386+= -UCONFIG_TRIPLET -DCONFIG_TRIPLET="\"i386-linux-gnu\" "
DEF-x86_64+=-UCONFIG_TRIPLET -DCONFIG_TRIPLET="\"x86_64-linux-gnu\" "
# many api/fp combinations are possible for arm
DEF-arm+=-UCONFIG_TRIPLET -DCONFIG_TRIPLET="\"arm-linux-gnueabihf\" "
DEF-arm64+= -UCONFIG_TRIPLET -DCONFIG_TRIPLET="\"aarch64-linux-gnu\" "
DEF-riscv64+= -UCONFIG_TRIPLET -DCONFIG_TRIPLET="\"riscv64-linux-gnu\" "
# For win32/win64 targets, we expect mingw 64
# is is for additional packes, as tcc has ist own win32 startfiles
DEF-i386-win32+= -UCONFIG_TRIPLET -DCONFIG_TRIPLET="\"i686-w64-mingw32\" "
DEF-x86_64-win32+= -UCONFIG_TRIPLET -DCONFIG_TRIPLET="\"x86_64-w64-mingw32\" "
# is a free cross compile toolchain for macos available?
#DEF-x86_64-osx+= -UCONFIG_TRIPLET -DCONFIG_TRIPLET="\"x86_64-apple-darwin\" "
#DEF-arm64-osx+= -UCONFIG_TRIPLET -DCONFIG_TRIPLET="\"aarch64-apple-darwin\" "

8
tcc.h
View file

@ -260,7 +260,9 @@ extern long double strtold (const char *__nptr, char **__endptr);
/* path to find crt1.o, crti.o and crtn.o */
#ifndef CONFIG_TCC_CRTPREFIX
# define CONFIG_TCC_CRTPREFIX USE_TRIPLET(CONFIG_SYSROOT "/usr/" CONFIG_LDDIR)
# define CONFIG_TCC_CRTPREFIX \
ALSO_TRIPLET(CONFIG_SYSROOT "/usr/" CONFIG_LDDIR) \
":" USE_TRIPLET(CONFIG_SYSROOT "/usr") "/lib"
#endif
#ifndef CONFIG_USR_INCLUDE
@ -277,6 +279,8 @@ extern long double strtold (const char *__nptr, char **__endptr);
# define CONFIG_TCC_SYSINCLUDEPATHS \
"{B}/include" \
":" ALSO_TRIPLET(CONFIG_SYSROOT "/usr/local/include") \
":" USE_TRIPLET(CONFIG_SYSROOT "/usr") "/include" \
":" USE_TRIPLET(CONFIG_SYSROOT "/usr/local") "/include" \
":" ALSO_TRIPLET(CONFIG_SYSROOT CONFIG_USR_INCLUDE)
# endif
#endif
@ -289,6 +293,8 @@ extern long double strtold (const char *__nptr, char **__endptr);
# define CONFIG_TCC_LIBPATHS \
"{B}" \
":" ALSO_TRIPLET(CONFIG_SYSROOT "/usr/" CONFIG_LDDIR) \
":" USE_TRIPLET(CONFIG_SYSROOT "/usr") "/lib" \
":" USE_TRIPLET(CONFIG_SYSROOT "/usr/local") "/lib" \
":" ALSO_TRIPLET(CONFIG_SYSROOT "/" CONFIG_LDDIR) \
":" ALSO_TRIPLET(CONFIG_SYSROOT "/usr/local/" CONFIG_LDDIR)
# endif